Gerlinde Rusu | Politehnica University of Timisoara (original) (raw)

Papers by Gerlinde Rusu

Research paper thumbnail of Advances in Low-Density Flexible Polyurethane Foams by Optimized Incorporation of High Amount of Recycled Polyol

Polymers

An industrially manufactured recycled polyol, obtained by acidolysis process, was for the first t... more An industrially manufactured recycled polyol, obtained by acidolysis process, was for the first time proved to be a possible replacement of the reference fossil-based polyol in a low-density formulation suitable for industrial production of flexible polyurethane foams. The influence of increasing recycled polyol amounts on the properties of the polyurethane foam has been studied, also performing foam emission tests to evaluate the environmental impact. Using 10 pbw recycled polyol in the standard formulation, significant differences of the physical properties were not observed, but increase of the recycled polyol amount to 30 pbw led to a dramatic decrease of the foam air flow and a very tight foam. To overcome this drawback, N,N′-bis[3-(dimethylamino)propyl]urea was selected as tertiary amine catalyst, enabling the preservation of foam properties even at high recycled polyol level (30 pbw). Foam emission data demonstrated that this optimized foam formulation also led to an importan...

Research paper thumbnail of Adsorption of Orange II Onto Zn2Al–Layered Double Hydroxide Prepared From Zinc Ash

Frontiers in Chemistry

The dye industry is one of the largest water consuming industries, and at the same time generates... more The dye industry is one of the largest water consuming industries, and at the same time generates large quantities of wastewaters. The resulting wastewaters require proper treatment before discharge, because the dye contents have a negative effect on the water body and organisms present in it. The most efficient treatment method for water containing dyes is represented by adsorption processes. The challenge with these adsorption processes is to develop new, efficient, viable, and economic adsorbent materials. Therefore, in the present paper, the performance of Zn2Al-layered double hydroxide, prepared from an industrial waste (zinc ash) as a zinc source, was investigated in the Orange II dye adsorption process. The Zn2Al-layered double hydroxide prepared from secondary sources presents similar morphological and structural characteristics as those prepared from analytical grade reagents. The influence of initial dye concentration, adsorption time, solid:liquid ratio, pH, and temperatu...

Research paper thumbnail of Synthesis, characterization of inclusion compounds of amygdalin with β-cyclodextrin and sod-like activity and cytotoxicity on hela tumor cells

Arabian Journal of Chemistry

Research paper thumbnail of Modified Chitosan for Silver Recovery—Kinetics, Thermodynamic, and Equilibrium Studies

Materials

The aim of this study is to investigate the silver recovery from aqueous solutions. There are a v... more The aim of this study is to investigate the silver recovery from aqueous solutions. There are a variety of recovery methods, such as hydrometallurgical, bio-metallurgical, cementation, reduction, electrocoagulation, electrodialysis, ion exchange, etc. Adsorption represents a convenient, environment friendly procedure, that can be used to recover silver from aqueous solutions. In this paper we highlight the silver adsorption mechanism on chitosan chemically modified with active groups, through kinetic, thermodynamic, and equilibrium studies. A maximum adsorption capacity of 103.6 mg Ag(I)/g of adsorbent for an initial concentration of 700 mg/L was noticed by using modified chitosan. Lower adsorption capacity has been noticed in unmodified chitosan—a maximum of 75.43 mg Ag(I)/g. Optimum contact time was 120 min and the process had a maximum efficiency when conducted at pH higher than 6. At the same time, a way is presented to obtain metallic silver from the adsorbent materials used fo...

Research paper thumbnail of Complexation of danube common nase (chondrostoma nasus l.) oil by β-cyclodextrin and 2-hydroxypropyl-β-cyclodextrin

Research paper thumbnail of Biodegradation studies on new glycopolymers derived from oligomeric d-mannose itaconates and 2-hydroxypropyl acrylate

Polymer Degradation and Stability

Research paper thumbnail of Recovery of Flexible Polyurethane Foam Waste for Efficient Reuse in Industrial Formulations

Polymers, 2020

Ester polyurethane (PU) foam waste was reacted at atmospheric pressure in an autoclave and using ... more Ester polyurethane (PU) foam waste was reacted at atmospheric pressure in an autoclave and using microwaves with diethylene glycol (DEG) at different PU/DEG ratios in the presence of diethanolamine as a catalyst to find the glycolysis conditions that allow for the improved recovery of the PU foam waste and enable the recycling of the whole glycolysis product in foam formulations suitable for industrial application. The recycled polyol was characterized by dynamic viscosity, hydroxyl number, water content, and density, while thermal stability was assessed using thermogravimetric analysis. In the PU foam formulation, 1% and 5% of the glycolyzed material was reused. The relationship between the reuse level of the recycled polyol and the physical properties of the foam was thoroughly investigated. It was observed that both hardness and air flow decreased with increasing recycled polyol content, particularly for the polyester type foam, while tensile strength and compression strength inc...

Research paper thumbnail of Thermal and oxidative stability of Atlantic salmon oil ( Salmo salar L.) and complexation with β-cyclodextrin

Beilstein Journal of Organic Chemistry, 2016

Research paper thumbnail of Nano-encapsulation competitiveness of omega-3 fatty acids and correlations of thermal analysis and Karl Fischer water titration for European anchovy (Engraulis encrasicolus L.) oil/β-cyclodextrin complexes

LWT - Food Science and Technology, 2016

Research paper thumbnail of Thermal stability of ibuprofen. Kinetic study under non-isothermal conditions

Revue Roumaine De Chimie, 2010

Simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques were us... more Simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques were used for the characterization of the thermal degradation of ibuprofen. TG analysis revealed that the thermal decomposition occurs in single step, in nitrogen atmosphere. DSC curves showed that ibuprofen met before the decomposition and the decomposition products are volatile in nitrogen. The Chang, Freeman-Carroll (FC) and Friedman isoconversional (Fd) differential methods, respectively integral methods: Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) were used for the solid-state kinetic analysis of ibuprofen thermal decomposition.

Research paper thumbnail of Effects of Experimental Conditions on the Thermal Behaviour of Some Non-steroidal Anti-inflammatory Drugs

Data on the thermal stability of drugs was required to obtain information for handling, storage, ... more Data on the thermal stability of drugs was required to obtain information for handling, storage, shelf life and usage. In this work, the thermal stability of four non-steroidal anti-inflammatory drugs (NSAIDs): Ibuprofen (IB), Ketoprofen (KT), Indomethacin (IND) and Piroxicam (PX) was determined by simultaneous thermogravimetery/differential thermal analysis (TG/DTG/DTA) techniques. The results of TG/DTG analysis show that the main thermal degradation for IB, KT, IND and PX occurs in the temperature ranges of 175-300°C ; 235-400°C ; 235-450°C respectively 200-450°C. The TG/DTA analysis of compounds mentioned show the following temperatures of melting: IB-78.5°C; . Moreover, the influence of heating rate and sample size on the thermal decomposition of examined compounds was evaluated. The results show that the increase of two parameters has influence on the temperature range and the shape of thermoanalytical curves, especially the heating rate.

Research paper thumbnail of Influence of Processing Temperature on Some Mechanical-Physical Properties of Thermoplastic Polyurethane Desmopan KA 8377 Used for Injection Moulding of Performance Sport Products

This paper presents the influence of processing temperature on some mechanical-physical propertie... more This paper presents the influence of processing temperature on some mechanical-physical properties of thermoplastic polyurethane (TPU), grade Desmopan KA 8377, used for injection moulding of performance sport products. The test pieces were moulded at the following real injection temperatures : 200°C, 210°C, 220°C, 230°C and 240°C. It was determined that the in-mould (cavity) pressure decreased with increasing of the processing temperature. Also TPU was thermally analyzed through: Thermogravimetry (TG), Differential Scanning Calorimetry (DSC) and Dynamic- Mechanical Analysis (DMA). It was established that processing temperature has a significant influence on the thermal stability and on the glass transition temperature of polymer while the flow temperature is slightly influenced by the processing temperature.

Research paper thumbnail of Variation of Cavity Pressure Depending on Processing Temperature at Injection Moulding of the Polymers Used for Manufacturing of Sport Products

This paper is establishing the influence of the processing temperature on the in-mould (cavity) p... more This paper is establishing the influence of the processing temperature on the in-mould (cavity) pressure at injection moulding of the polymers used for manufacturing of sport products. The processed polymers were: polyoxymethylene (POM, polyacetal), polyamide 6,6 (PA 6,6), polycarbonate (PC), thermoplastic polyurethane (TPU) and polypropylene (PP). The injection machine employed was an horizontal ENGEL G/11/10/116/3, model VC 500/110 TECH, made in 2002. The temperature in the injection cylinder nozzle was measured through a DYNISCO Ti422J thermocouple. The cavity temperature was determined by means of a thermocouple temperature probe, model 2024T, produced by Digitron Instrumentation Ltd. and the cavity pressure was measured with a transducer, model IDA, made by Dynisco Europe GmbH.

Research paper thumbnail of Polymerization Kinetic Analysis of some Glycerol and Glucose Based Polymers

Macromolecular Symposia, 2015

ABSTRACT The present study is focused on the synthesis of polymers starting from renewable resour... more ABSTRACT The present study is focused on the synthesis of polymers starting from renewable resources. The two monomers were prepared by reaction of the corresponding derivative of glycerol (2,2-dimethyl-1,3-dioxolane-4-yl-methyl acrylate) and glucose (3-O-acryloyl-1,25,6-di-O-isopropylidene-α-glucofuranose) with acryloyl chloride, M1 and M2. Different molar ratio were used for the copolymers synthesis (M1:M2=3:1 and 5:1). The homo and co-polymerization processes were investigated by Differential Scanning Calorimetry (DSC). Based on DSC data the activation energies were estimated by the following methods described by: Kissinger, Flynn–Wall–Ozawa (FWO) and Kissinger–Akahira–Sunose (KAS) The thermal stabilities of the resulting polymers were evaluated from the thermo gravimetrical (TG) analysis.

Research paper thumbnail of Recovery of new inulin esters as biodegradable compounds

Research paper thumbnail of Solubility and viscosity studies on inulin modified with methacyloyl and palmitoyl chlorides

Inulin was modified in order to obtain mixed esters. The modification was carried out with methcr... more Inulin was modified in order to obtain mixed esters. The modification was carried out with methcryloyl chloride in a first step, followed by an acylation with palmitoyl choride in the second step. After the isolation and the drying of the esters, several solutions with different concentrations were prepared in order to perform viscometric measurements. The solvent used in the determinations

Research paper thumbnail of Degradable Polymers with Inulin Content

Polysaccharide based plastic materials were obtained using modified inulin with methcryloyl and p... more Polysaccharide based plastic materials were obtained using modified inulin with methcryloyl and palmitoyl chlorides. These esters were copolymerised with n-butyl acrylate and 2-ethyl hexyl acrylate. The hardness of the obtained samples was evaluated using the Hőppler equipment. Moreover, the chemical stability of the samples in acid and basic medium was evaluated.

Research paper thumbnail of Propolis extract/β-cyclodextrin nanoparticles: synthesis, physico-chemical, and multivariate analyses

The paper presents a study on the propolis extraction, analysis, nanoencapsulation în β cyclodext... more The paper presents a study on the propolis extraction, analysis, nanoencapsulation în β cyclodextrin, and antioxidative activity of both the extracts and micro/nanoparticles. Propolis extraction was realized in various ethanol-water solutions, at room temperature or up to ethanol reflux, and the extracts were analyzed by RP-HPLC. The bioactive compounds identified and quantified in extracts and furthermore in propolis were flavonoids

Research paper thumbnail of Synthesis of fructooligosaccharide-based plastic films starting from inulin

e-Polymers, 2005

In this preliminary study, inulin, a fructooligosaccharide extracted from chicory roots, was conv... more In this preliminary study, inulin, a fructooligosaccharide extracted from chicory roots, was converted into plastic films by acylation in homogeneous medium and under conventional heating, using methacryloyl and lauroyl chlorides as acylating reagents and N,N-dimethyl-4-aminopyridine as basic catalyst. Products were analyzed by FT-IR and 1 H NMR spectroscopies to confirm their structures. A preliminary study of their thermal properties was also achieved. Unauthenticated Download Date | 2/15/16 4:33 PM CH 2 O OH HO O HO O OH HO O HO OH

Research paper thumbnail of Compatibility study between ibuprofen and excipients in their physical mixtures

Journal of Thermal Analysis and Calorimetry, 2011

... in their physical mixtures Bogdan Tita • Adriana Fulias • Zoltan Szabadai • Gerlinde Rusu • G... more ... in their physical mixtures Bogdan Tita • Adriana Fulias • Zoltan Szabadai • Gerlinde Rusu • Geza Bandur • Dumitru Tita ESTAC2010 Conference Special Issue Ó Akadémiai Kiadó, Budapest, Hungary 2010 ... O O Fig. 1 The chemical structure of the IB B. Tita et al. 123 Page 3. ...

Research paper thumbnail of Advances in Low-Density Flexible Polyurethane Foams by Optimized Incorporation of High Amount of Recycled Polyol

Polymers

An industrially manufactured recycled polyol, obtained by acidolysis process, was for the first t... more An industrially manufactured recycled polyol, obtained by acidolysis process, was for the first time proved to be a possible replacement of the reference fossil-based polyol in a low-density formulation suitable for industrial production of flexible polyurethane foams. The influence of increasing recycled polyol amounts on the properties of the polyurethane foam has been studied, also performing foam emission tests to evaluate the environmental impact. Using 10 pbw recycled polyol in the standard formulation, significant differences of the physical properties were not observed, but increase of the recycled polyol amount to 30 pbw led to a dramatic decrease of the foam air flow and a very tight foam. To overcome this drawback, N,N′-bis[3-(dimethylamino)propyl]urea was selected as tertiary amine catalyst, enabling the preservation of foam properties even at high recycled polyol level (30 pbw). Foam emission data demonstrated that this optimized foam formulation also led to an importan...

Research paper thumbnail of Adsorption of Orange II Onto Zn2Al–Layered Double Hydroxide Prepared From Zinc Ash

Frontiers in Chemistry

The dye industry is one of the largest water consuming industries, and at the same time generates... more The dye industry is one of the largest water consuming industries, and at the same time generates large quantities of wastewaters. The resulting wastewaters require proper treatment before discharge, because the dye contents have a negative effect on the water body and organisms present in it. The most efficient treatment method for water containing dyes is represented by adsorption processes. The challenge with these adsorption processes is to develop new, efficient, viable, and economic adsorbent materials. Therefore, in the present paper, the performance of Zn2Al-layered double hydroxide, prepared from an industrial waste (zinc ash) as a zinc source, was investigated in the Orange II dye adsorption process. The Zn2Al-layered double hydroxide prepared from secondary sources presents similar morphological and structural characteristics as those prepared from analytical grade reagents. The influence of initial dye concentration, adsorption time, solid:liquid ratio, pH, and temperatu...

Research paper thumbnail of Synthesis, characterization of inclusion compounds of amygdalin with β-cyclodextrin and sod-like activity and cytotoxicity on hela tumor cells

Arabian Journal of Chemistry

Research paper thumbnail of Modified Chitosan for Silver Recovery—Kinetics, Thermodynamic, and Equilibrium Studies

Materials

The aim of this study is to investigate the silver recovery from aqueous solutions. There are a v... more The aim of this study is to investigate the silver recovery from aqueous solutions. There are a variety of recovery methods, such as hydrometallurgical, bio-metallurgical, cementation, reduction, electrocoagulation, electrodialysis, ion exchange, etc. Adsorption represents a convenient, environment friendly procedure, that can be used to recover silver from aqueous solutions. In this paper we highlight the silver adsorption mechanism on chitosan chemically modified with active groups, through kinetic, thermodynamic, and equilibrium studies. A maximum adsorption capacity of 103.6 mg Ag(I)/g of adsorbent for an initial concentration of 700 mg/L was noticed by using modified chitosan. Lower adsorption capacity has been noticed in unmodified chitosan—a maximum of 75.43 mg Ag(I)/g. Optimum contact time was 120 min and the process had a maximum efficiency when conducted at pH higher than 6. At the same time, a way is presented to obtain metallic silver from the adsorbent materials used fo...

Research paper thumbnail of Complexation of danube common nase (chondrostoma nasus l.) oil by β-cyclodextrin and 2-hydroxypropyl-β-cyclodextrin

Research paper thumbnail of Biodegradation studies on new glycopolymers derived from oligomeric d-mannose itaconates and 2-hydroxypropyl acrylate

Polymer Degradation and Stability

Research paper thumbnail of Recovery of Flexible Polyurethane Foam Waste for Efficient Reuse in Industrial Formulations

Polymers, 2020

Ester polyurethane (PU) foam waste was reacted at atmospheric pressure in an autoclave and using ... more Ester polyurethane (PU) foam waste was reacted at atmospheric pressure in an autoclave and using microwaves with diethylene glycol (DEG) at different PU/DEG ratios in the presence of diethanolamine as a catalyst to find the glycolysis conditions that allow for the improved recovery of the PU foam waste and enable the recycling of the whole glycolysis product in foam formulations suitable for industrial application. The recycled polyol was characterized by dynamic viscosity, hydroxyl number, water content, and density, while thermal stability was assessed using thermogravimetric analysis. In the PU foam formulation, 1% and 5% of the glycolyzed material was reused. The relationship between the reuse level of the recycled polyol and the physical properties of the foam was thoroughly investigated. It was observed that both hardness and air flow decreased with increasing recycled polyol content, particularly for the polyester type foam, while tensile strength and compression strength inc...

Research paper thumbnail of Thermal and oxidative stability of Atlantic salmon oil ( Salmo salar L.) and complexation with β-cyclodextrin

Beilstein Journal of Organic Chemistry, 2016

Research paper thumbnail of Nano-encapsulation competitiveness of omega-3 fatty acids and correlations of thermal analysis and Karl Fischer water titration for European anchovy (Engraulis encrasicolus L.) oil/β-cyclodextrin complexes

LWT - Food Science and Technology, 2016

Research paper thumbnail of Thermal stability of ibuprofen. Kinetic study under non-isothermal conditions

Revue Roumaine De Chimie, 2010

Simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques were us... more Simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques were used for the characterization of the thermal degradation of ibuprofen. TG analysis revealed that the thermal decomposition occurs in single step, in nitrogen atmosphere. DSC curves showed that ibuprofen met before the decomposition and the decomposition products are volatile in nitrogen. The Chang, Freeman-Carroll (FC) and Friedman isoconversional (Fd) differential methods, respectively integral methods: Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) were used for the solid-state kinetic analysis of ibuprofen thermal decomposition.

Research paper thumbnail of Effects of Experimental Conditions on the Thermal Behaviour of Some Non-steroidal Anti-inflammatory Drugs

Data on the thermal stability of drugs was required to obtain information for handling, storage, ... more Data on the thermal stability of drugs was required to obtain information for handling, storage, shelf life and usage. In this work, the thermal stability of four non-steroidal anti-inflammatory drugs (NSAIDs): Ibuprofen (IB), Ketoprofen (KT), Indomethacin (IND) and Piroxicam (PX) was determined by simultaneous thermogravimetery/differential thermal analysis (TG/DTG/DTA) techniques. The results of TG/DTG analysis show that the main thermal degradation for IB, KT, IND and PX occurs in the temperature ranges of 175-300°C ; 235-400°C ; 235-450°C respectively 200-450°C. The TG/DTA analysis of compounds mentioned show the following temperatures of melting: IB-78.5°C; . Moreover, the influence of heating rate and sample size on the thermal decomposition of examined compounds was evaluated. The results show that the increase of two parameters has influence on the temperature range and the shape of thermoanalytical curves, especially the heating rate.

Research paper thumbnail of Influence of Processing Temperature on Some Mechanical-Physical Properties of Thermoplastic Polyurethane Desmopan KA 8377 Used for Injection Moulding of Performance Sport Products

This paper presents the influence of processing temperature on some mechanical-physical propertie... more This paper presents the influence of processing temperature on some mechanical-physical properties of thermoplastic polyurethane (TPU), grade Desmopan KA 8377, used for injection moulding of performance sport products. The test pieces were moulded at the following real injection temperatures : 200°C, 210°C, 220°C, 230°C and 240°C. It was determined that the in-mould (cavity) pressure decreased with increasing of the processing temperature. Also TPU was thermally analyzed through: Thermogravimetry (TG), Differential Scanning Calorimetry (DSC) and Dynamic- Mechanical Analysis (DMA). It was established that processing temperature has a significant influence on the thermal stability and on the glass transition temperature of polymer while the flow temperature is slightly influenced by the processing temperature.

Research paper thumbnail of Variation of Cavity Pressure Depending on Processing Temperature at Injection Moulding of the Polymers Used for Manufacturing of Sport Products

This paper is establishing the influence of the processing temperature on the in-mould (cavity) p... more This paper is establishing the influence of the processing temperature on the in-mould (cavity) pressure at injection moulding of the polymers used for manufacturing of sport products. The processed polymers were: polyoxymethylene (POM, polyacetal), polyamide 6,6 (PA 6,6), polycarbonate (PC), thermoplastic polyurethane (TPU) and polypropylene (PP). The injection machine employed was an horizontal ENGEL G/11/10/116/3, model VC 500/110 TECH, made in 2002. The temperature in the injection cylinder nozzle was measured through a DYNISCO Ti422J thermocouple. The cavity temperature was determined by means of a thermocouple temperature probe, model 2024T, produced by Digitron Instrumentation Ltd. and the cavity pressure was measured with a transducer, model IDA, made by Dynisco Europe GmbH.

Research paper thumbnail of Polymerization Kinetic Analysis of some Glycerol and Glucose Based Polymers

Macromolecular Symposia, 2015

ABSTRACT The present study is focused on the synthesis of polymers starting from renewable resour... more ABSTRACT The present study is focused on the synthesis of polymers starting from renewable resources. The two monomers were prepared by reaction of the corresponding derivative of glycerol (2,2-dimethyl-1,3-dioxolane-4-yl-methyl acrylate) and glucose (3-O-acryloyl-1,25,6-di-O-isopropylidene-α-glucofuranose) with acryloyl chloride, M1 and M2. Different molar ratio were used for the copolymers synthesis (M1:M2=3:1 and 5:1). The homo and co-polymerization processes were investigated by Differential Scanning Calorimetry (DSC). Based on DSC data the activation energies were estimated by the following methods described by: Kissinger, Flynn–Wall–Ozawa (FWO) and Kissinger–Akahira–Sunose (KAS) The thermal stabilities of the resulting polymers were evaluated from the thermo gravimetrical (TG) analysis.

Research paper thumbnail of Recovery of new inulin esters as biodegradable compounds

Research paper thumbnail of Solubility and viscosity studies on inulin modified with methacyloyl and palmitoyl chlorides

Inulin was modified in order to obtain mixed esters. The modification was carried out with methcr... more Inulin was modified in order to obtain mixed esters. The modification was carried out with methcryloyl chloride in a first step, followed by an acylation with palmitoyl choride in the second step. After the isolation and the drying of the esters, several solutions with different concentrations were prepared in order to perform viscometric measurements. The solvent used in the determinations

Research paper thumbnail of Degradable Polymers with Inulin Content

Polysaccharide based plastic materials were obtained using modified inulin with methcryloyl and p... more Polysaccharide based plastic materials were obtained using modified inulin with methcryloyl and palmitoyl chlorides. These esters were copolymerised with n-butyl acrylate and 2-ethyl hexyl acrylate. The hardness of the obtained samples was evaluated using the Hőppler equipment. Moreover, the chemical stability of the samples in acid and basic medium was evaluated.

Research paper thumbnail of Propolis extract/β-cyclodextrin nanoparticles: synthesis, physico-chemical, and multivariate analyses

The paper presents a study on the propolis extraction, analysis, nanoencapsulation în β cyclodext... more The paper presents a study on the propolis extraction, analysis, nanoencapsulation în β cyclodextrin, and antioxidative activity of both the extracts and micro/nanoparticles. Propolis extraction was realized in various ethanol-water solutions, at room temperature or up to ethanol reflux, and the extracts were analyzed by RP-HPLC. The bioactive compounds identified and quantified in extracts and furthermore in propolis were flavonoids

Research paper thumbnail of Synthesis of fructooligosaccharide-based plastic films starting from inulin

e-Polymers, 2005

In this preliminary study, inulin, a fructooligosaccharide extracted from chicory roots, was conv... more In this preliminary study, inulin, a fructooligosaccharide extracted from chicory roots, was converted into plastic films by acylation in homogeneous medium and under conventional heating, using methacryloyl and lauroyl chlorides as acylating reagents and N,N-dimethyl-4-aminopyridine as basic catalyst. Products were analyzed by FT-IR and 1 H NMR spectroscopies to confirm their structures. A preliminary study of their thermal properties was also achieved. Unauthenticated Download Date | 2/15/16 4:33 PM CH 2 O OH HO O HO O OH HO O HO OH

Research paper thumbnail of Compatibility study between ibuprofen and excipients in their physical mixtures

Journal of Thermal Analysis and Calorimetry, 2011

... in their physical mixtures Bogdan Tita • Adriana Fulias • Zoltan Szabadai • Gerlinde Rusu • G... more ... in their physical mixtures Bogdan Tita • Adriana Fulias • Zoltan Szabadai • Gerlinde Rusu • Geza Bandur • Dumitru Tita ESTAC2010 Conference Special Issue Ó Akadémiai Kiadó, Budapest, Hungary 2010 ... O O Fig. 1 The chemical structure of the IB B. Tita et al. 123 Page 3. ...