Mojtaba Jalili | Institute for Color Science and Technology (original) (raw)

Papers by Mojtaba Jalili

Research paper thumbnail of Optimization of Water Based Flexography Inks for Printing on Polyethylene Films

In this article optimization of water based flexography ink formulation for printing polyethylene... more In this article optimization of water based flexography ink formulation for printing polyethylene films is investigated by the aid of Design Expert 6.06 software. Since resin, solvent and pigment are the most important components in composition of inks, which affect properties of ink, So these components are considered as factors in mixture experimental design and their effects on ink properties were studied. Measurements of some physical and mechanical properties such as viscosity, surface tension, gloss, abrasion resistance, adhesion and reversibility were carried out on ink samples. These factors and their interactions were determined and finally, the optimized area was obtained. J. Color Sci. Tech. 3(2009), 131-143 © Institute for Color Science and Technology.

Research paper thumbnail of The Effect of Pigment Concentration and Particle Size Distribution on the Rheological Behavior of Lithography Inks

In this research, a lithography ink formulation based on the Maleic and Alkyd resin has been prep... more In this research, a lithography ink formulation based on the Maleic and Alkyd resin has been prepared and its rheological parameters such as viscosity vs. shear rate, thixotropy cycle, storage and loss modules and dynamic viscosity were studied. It was observed that viscosity values augmented severely by increasing the pigments concentration and reducing the particle size distribution. Time dependence thixotropy values were significant in samples containing small particle size and high pigment concentration. Structural networking and association of carbon black particles as well as particle-particle and particle-binder interaction are reasons for this behavior. Storage and loss modules were increased with reduction of particle size and/or increasing of pigment concentration. Besides, the differences between dynamic parameters in low frequencies were obvious. J. Color Sci. Tech. 4(2010), 91-103© Institute for Color Science and Technology.

Research paper thumbnail of Silica aerogel/polyacrylonitrile/polyvinylidene fluoride nanofiber and its ability for treatment of colored wastewater

Journal of Molecular Structure, 2021

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Research paper thumbnail of A New Method for Clearing Dyed Polyester Fabrics by Gemini Cationic Surfactants

Journal of Surfactants and Detergents, 2012

In the study, a new treatment with cationic surfactants was proposed to remove deposited disperse... more In the study, a new treatment with cationic surfactants was proposed to remove deposited disperse dyes from polyester fabrics as an alternative to the traditional reduction clearing process. For this purpose, dodecyltrimethyl ammonium bromide and two gemini cationic surfactants (12-4-12 and 14-4-14) were investigated and the optimum operating conditions were obtained using a central composite design. Findings indicated that gemini cationic surfactants can be considered as the best candidates to remove deposited disperse dyes from polyester fabrics. This was confirmed by the results of the scanning electron microscope images, fastness properties and spectrophotometry.

Research paper thumbnail of Effect of Ink Formulation and Paper Surface Morphology on Ink-jet Printing Properties

Progress in Color, Colorants and Coatings, Aug 20, 2014

he purpose of this study was to investigate the effect of different type of alcohols and humectan... more he purpose of this study was to investigate the effect of different type of alcohols and humectants in inks formulation, as well as the influence of paper surface morphology on the ink-jet printing properties. In order to investigate the influence of alcohol and humectant types on printing properties, the optimum ink containing C.I. Reactive Blue 21 (Ink2) was formulated with different type of alcohols and humectants. The results of optical density and water fastness evaluations indicated that, the prints depend more on paper surface morphology rather than the type of alcohols and humectants in ink formulation. Optimum optical density and good water fastness properties were obtained on glossy coated ink-jet printed papers comprising optimum-diameter nano-porosities in their coating layer. Prog.

Research paper thumbnail of Primary–secondary amino silica nanoparticle: synthesis and dye removal from binary system

Desalination and Water Treatment, 2013

In this paper, primary-secondary amino silica nanoparticle (PSASN) was synthesized, and its dye r... more In this paper, primary-secondary amino silica nanoparticle (PSASN) was synthesized, and its dye removal ability from single and binary systems containing printing dyes was investigated. The synthesized PSASN was characterized by means of Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and BET analyses. Acid blue 92 (AB92), Direct Black 22 (DB22), Direct Red 31 (DR31), and Direct Red 80 (DR80) were used. The kinetics and isotherm of dye adsorption were studied. The effects of PSASN dosage, pH, salt, and initial dye concentration on dye removal were evaluated. Adsorption kinetic was found to conform to pseudo-second-order kinetics. The maximum dye adsorption capacity (Q 0) of PSASN for AB92, DB22, DR31, and DR80 were 113.636, 37.453, 114.943, and 41.152 mg/g, respectively. It was found that dye adsorption on PSASN followed Langmuir isotherm. The results showed that the PSASN as an adsorbent with dye adsorption capacity might be a suitable alternative to remove dyes from colored printing wastewater.

Research paper thumbnail of Direct Sublimation Inkjet Printing as a New Environmentally Friendly Approach for Printing on Polyester Textiles

Polyester is one of the most important synthetic fibers extensively used in textile industry. Ink... more Polyester is one of the most important synthetic fibers extensively used in textile industry. Inkjet printing on polyester textile is performed either by direct or transfer approaches. The first method needs chemical surface treatment, while the latter uses transfer paper. In this article, direct sublimation inkjet printing (DSIP) on polyester textile has been studied to overcome the natural resource limitations and environmental problems by eliminating the need for transfer paper and chemical surface treatment. Polyester textile was surface treated using atmospheric-pressure plasma under air atmosphere. The effects of different factors including plasma speed, plasma power, and the number of treatments on the contact angle and K/S value have been investigated via experimental design method. Scanning electron microscopy (SEM), attenuated total reflection-fourier transform infrared (ATR-FTIR), and bleeding test showed that plasma power has the least effect on both K/S value and contac...

Research paper thumbnail of Zeolitic imidazole framework (ZIF) – zinc oxide nanocomposite: synthesis and ultrasound-assisted pollutant removal from the binary system

DESALINATION AND WATER TREATMENT, 2021

Nowadays, the overuse of dyes and their presence in wastewater can be considered as an environmen... more Nowadays, the overuse of dyes and their presence in wastewater can be considered as an environmental concern. In this study, zeolitic imidazole framework-8 (ZIF-8), zinc oxide (ZnO), and their composite (ZnO-ZIF-8) were synthesized and characterized by scanning electron microscopy, Fourier transform infrared, X-ray diffraction, and zeta potential techniques. The synthesized materials were used for the removal of Malachite green (MG) from aqueous media via a batch adsorption process. The adsorption isotherm, and the effects of operational parameters, including adsorbent dosage, initial dye concentration, time, and pH on dye removal, were comprehensively studied. The adsorption capacity of the composite was 3,654 mg/g. The results showed that the experimental data were fitted by the Freundlich isotherm model with a high correlation coefficient (0.9676). Moreover, the ability of the prepared adsorbents (ZIF-8, ZnO, and ZnO-ZIF-8) for the removal of dyes from binary systems containing MG and Rhodamine-B (Rh-B) was evaluated.

Research paper thumbnail of The use of upconversion microparticles as a novel internal radiation source for fabrication of composite materials

Polymer Composites, 2018

Upconversion (UC) microparticles were used as novel internal radiation sources for composite prep... more Upconversion (UC) microparticles were used as novel internal radiation sources for composite preparation. These particles emit Ultraviolet-Visible radiation when exposed to Near-infrared waves. This radiation causes uniform and deep polymerization. Two types of UC particles were prepared via a facile hydrothermal method, including NaLuF 4 : Yb 20%, Tm 0.5% and NaLuF 4 : Yb 40%, Tm 0.5%. The effect of three different photoinitiator systems, including titanocene, bisacylphosphine oxide, and camphorquinone, on the cure depth and the degree of conversion (DC) was investigated. Polymerization reaction rate was also studied. Moreover, the effect of weight percentage of UC particles and laser intensity on the cure depth and the DC were evaluated. Rheological behavior of the composites with different percentage of the particles (1, 3, and 5%) and the effect of temperature were studied. The results showed that the overlap of the UC particles emission spectrum with the photoinitiator absorption spectrum and the intensity of the photoinitiator absorption in the emission range of the particles are of the most important factors affecting cure depth, rate and DC. The cure depth with DC up to approximately 80% was 41 mm. Moreover, the DC was almost constant along the sample.

Research paper thumbnail of The effect of different dispersants on the physical properties of nano CoAl2O4 ceramic ink-jet ink

Ceramics International, 2015

ABSTRACT In this study, the prepared nano-CoAl2O4 pigments were characterized by XRD, SEM and UV ... more ABSTRACT In this study, the prepared nano-CoAl2O4 pigments were characterized by XRD, SEM and UV spectroscopy. In addition, four different inks were formulated by distinct dispersants such as SDS, CTAB, Triton X-100 and poly acrylic acid-co-itaconic acid (AA-co-AI). The effect of disperse agents was further investigated on rheology, surface tension and dynamic light scattering of prepared inks. The dispersion stability of nanoparticles was evaluated in various formulations by turbidimetry. The Ink-jet printed onto a ceramic tile was the most stable ink obtained through the use of poly (AA-co-IA). The print was set to 1, 3 and 5 runs in order to evaluate variations in the optical properties with various thicknesses of the printed film. The appearance of printed image and the morphology of the prepared nano-CoAl2O4 particles were observed by SEM. Finally, the shape and size of nano-CoAl2O4 particles in prepared ink were investigated through the employment of TEM.

Research paper thumbnail of Optimization of Water Based Flexography Inks for Printing on Polyethylene Films

In this article optimization of water based flexography ink formulation for printing polyethylene... more In this article optimization of water based flexography ink formulation for printing polyethylene films is investigated by the aid of Design Expert 6.06 software. Since resin, solvent and pigment are the most important components in composition of inks, which affect properties of ink, So these components are considered as factors in mixture experimental design and their effects on ink properties were studied. Measurements of some physical and mechanical properties such as viscosity, surface tension, gloss, abrasion resistance, adhesion and reversibility were carried out on ink samples. These factors and their interactions were determined and finally, the optimized area was obtained. J. Color Sci. Tech. 3(2009), 131-143 © Institute for Color Science and Technology.

Research paper thumbnail of The Effect of Pigment Concentration and Particle Size Distribution on the Rheological Behavior of Lithography Inks

In this research, a lithography ink formulation based on the Maleic and Alkyd resin has been prep... more In this research, a lithography ink formulation based on the Maleic and Alkyd resin has been prepared and its rheological parameters such as viscosity vs. shear rate, thixotropy cycle, storage and loss modules and dynamic viscosity were studied. It was observed that viscosity values augmented severely by increasing the pigments concentration and reducing the particle size distribution. Time dependence thixotropy values were significant in samples containing small particle size and high pigment concentration. Structural networking and association of carbon black particles as well as particle-particle and particle-binder interaction are reasons for this behavior. Storage and loss modules were increased with reduction of particle size and/or increasing of pigment concentration. Besides, the differences between dynamic parameters in low frequencies were obvious. J. Color Sci. Tech. 4(2010), 91-103© Institute for Color Science and Technology.

Research paper thumbnail of Silica aerogel/polyacrylonitrile/polyvinylidene fluoride nanofiber and its ability for treatment of colored wastewater

Journal of Molecular Structure, 2021

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Research paper thumbnail of A New Method for Clearing Dyed Polyester Fabrics by Gemini Cationic Surfactants

Journal of Surfactants and Detergents, 2012

In the study, a new treatment with cationic surfactants was proposed to remove deposited disperse... more In the study, a new treatment with cationic surfactants was proposed to remove deposited disperse dyes from polyester fabrics as an alternative to the traditional reduction clearing process. For this purpose, dodecyltrimethyl ammonium bromide and two gemini cationic surfactants (12-4-12 and 14-4-14) were investigated and the optimum operating conditions were obtained using a central composite design. Findings indicated that gemini cationic surfactants can be considered as the best candidates to remove deposited disperse dyes from polyester fabrics. This was confirmed by the results of the scanning electron microscope images, fastness properties and spectrophotometry.

Research paper thumbnail of Effect of Ink Formulation and Paper Surface Morphology on Ink-jet Printing Properties

Progress in Color, Colorants and Coatings, Aug 20, 2014

he purpose of this study was to investigate the effect of different type of alcohols and humectan... more he purpose of this study was to investigate the effect of different type of alcohols and humectants in inks formulation, as well as the influence of paper surface morphology on the ink-jet printing properties. In order to investigate the influence of alcohol and humectant types on printing properties, the optimum ink containing C.I. Reactive Blue 21 (Ink2) was formulated with different type of alcohols and humectants. The results of optical density and water fastness evaluations indicated that, the prints depend more on paper surface morphology rather than the type of alcohols and humectants in ink formulation. Optimum optical density and good water fastness properties were obtained on glossy coated ink-jet printed papers comprising optimum-diameter nano-porosities in their coating layer. Prog.

Research paper thumbnail of Primary–secondary amino silica nanoparticle: synthesis and dye removal from binary system

Desalination and Water Treatment, 2013

In this paper, primary-secondary amino silica nanoparticle (PSASN) was synthesized, and its dye r... more In this paper, primary-secondary amino silica nanoparticle (PSASN) was synthesized, and its dye removal ability from single and binary systems containing printing dyes was investigated. The synthesized PSASN was characterized by means of Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and BET analyses. Acid blue 92 (AB92), Direct Black 22 (DB22), Direct Red 31 (DR31), and Direct Red 80 (DR80) were used. The kinetics and isotherm of dye adsorption were studied. The effects of PSASN dosage, pH, salt, and initial dye concentration on dye removal were evaluated. Adsorption kinetic was found to conform to pseudo-second-order kinetics. The maximum dye adsorption capacity (Q 0) of PSASN for AB92, DB22, DR31, and DR80 were 113.636, 37.453, 114.943, and 41.152 mg/g, respectively. It was found that dye adsorption on PSASN followed Langmuir isotherm. The results showed that the PSASN as an adsorbent with dye adsorption capacity might be a suitable alternative to remove dyes from colored printing wastewater.

Research paper thumbnail of Direct Sublimation Inkjet Printing as a New Environmentally Friendly Approach for Printing on Polyester Textiles

Polyester is one of the most important synthetic fibers extensively used in textile industry. Ink... more Polyester is one of the most important synthetic fibers extensively used in textile industry. Inkjet printing on polyester textile is performed either by direct or transfer approaches. The first method needs chemical surface treatment, while the latter uses transfer paper. In this article, direct sublimation inkjet printing (DSIP) on polyester textile has been studied to overcome the natural resource limitations and environmental problems by eliminating the need for transfer paper and chemical surface treatment. Polyester textile was surface treated using atmospheric-pressure plasma under air atmosphere. The effects of different factors including plasma speed, plasma power, and the number of treatments on the contact angle and K/S value have been investigated via experimental design method. Scanning electron microscopy (SEM), attenuated total reflection-fourier transform infrared (ATR-FTIR), and bleeding test showed that plasma power has the least effect on both K/S value and contac...

Research paper thumbnail of Zeolitic imidazole framework (ZIF) – zinc oxide nanocomposite: synthesis and ultrasound-assisted pollutant removal from the binary system

DESALINATION AND WATER TREATMENT, 2021

Nowadays, the overuse of dyes and their presence in wastewater can be considered as an environmen... more Nowadays, the overuse of dyes and their presence in wastewater can be considered as an environmental concern. In this study, zeolitic imidazole framework-8 (ZIF-8), zinc oxide (ZnO), and their composite (ZnO-ZIF-8) were synthesized and characterized by scanning electron microscopy, Fourier transform infrared, X-ray diffraction, and zeta potential techniques. The synthesized materials were used for the removal of Malachite green (MG) from aqueous media via a batch adsorption process. The adsorption isotherm, and the effects of operational parameters, including adsorbent dosage, initial dye concentration, time, and pH on dye removal, were comprehensively studied. The adsorption capacity of the composite was 3,654 mg/g. The results showed that the experimental data were fitted by the Freundlich isotherm model with a high correlation coefficient (0.9676). Moreover, the ability of the prepared adsorbents (ZIF-8, ZnO, and ZnO-ZIF-8) for the removal of dyes from binary systems containing MG and Rhodamine-B (Rh-B) was evaluated.

Research paper thumbnail of The use of upconversion microparticles as a novel internal radiation source for fabrication of composite materials

Polymer Composites, 2018

Upconversion (UC) microparticles were used as novel internal radiation sources for composite prep... more Upconversion (UC) microparticles were used as novel internal radiation sources for composite preparation. These particles emit Ultraviolet-Visible radiation when exposed to Near-infrared waves. This radiation causes uniform and deep polymerization. Two types of UC particles were prepared via a facile hydrothermal method, including NaLuF 4 : Yb 20%, Tm 0.5% and NaLuF 4 : Yb 40%, Tm 0.5%. The effect of three different photoinitiator systems, including titanocene, bisacylphosphine oxide, and camphorquinone, on the cure depth and the degree of conversion (DC) was investigated. Polymerization reaction rate was also studied. Moreover, the effect of weight percentage of UC particles and laser intensity on the cure depth and the DC were evaluated. Rheological behavior of the composites with different percentage of the particles (1, 3, and 5%) and the effect of temperature were studied. The results showed that the overlap of the UC particles emission spectrum with the photoinitiator absorption spectrum and the intensity of the photoinitiator absorption in the emission range of the particles are of the most important factors affecting cure depth, rate and DC. The cure depth with DC up to approximately 80% was 41 mm. Moreover, the DC was almost constant along the sample.

Research paper thumbnail of The effect of different dispersants on the physical properties of nano CoAl2O4 ceramic ink-jet ink

Ceramics International, 2015

ABSTRACT In this study, the prepared nano-CoAl2O4 pigments were characterized by XRD, SEM and UV ... more ABSTRACT In this study, the prepared nano-CoAl2O4 pigments were characterized by XRD, SEM and UV spectroscopy. In addition, four different inks were formulated by distinct dispersants such as SDS, CTAB, Triton X-100 and poly acrylic acid-co-itaconic acid (AA-co-AI). The effect of disperse agents was further investigated on rheology, surface tension and dynamic light scattering of prepared inks. The dispersion stability of nanoparticles was evaluated in various formulations by turbidimetry. The Ink-jet printed onto a ceramic tile was the most stable ink obtained through the use of poly (AA-co-IA). The print was set to 1, 3 and 5 runs in order to evaluate variations in the optical properties with various thicknesses of the printed film. The appearance of printed image and the morphology of the prepared nano-CoAl2O4 particles were observed by SEM. Finally, the shape and size of nano-CoAl2O4 particles in prepared ink were investigated through the employment of TEM.