Mohamed Ben Hassen - Academia.edu (original) (raw)

Papers by Mohamed Ben Hassen

Industria Textila

The yarn quality depends on many parameters: characteristics parameters, mechanical and physical ... more The yarn quality depends on many parameters: characteristics parameters, mechanical and physical properties. Making the hypothesis that the quality of the yarn is a multicriteria problem, in this paper, we propose a new method to determine the Quality Yarn Index QYI based on Analytic Hierarchy Process AHP and Fuzzy theory. A questionnaire was designed for experts of each field (weaving and knitting) to evaluate the relative importance for each property to determine coefficients of the AHP matrix. Results revealed that matrix coefficients changed with yarn application (weft or warp weaving and knitting) The QYI can be used in any application, where a rapid decision is needed, to evaluate the global quality of yarn and to make a comparison between different yarn qualities

Industria Textila

The aim of this study is to investigate the effect of extraction treatment method on the properti... more The aim of this study is to investigate the effect of extraction treatment method on the properties of WPF (Washingtonia palm fibres). The employed treatment is a combined mechanical and chemical sodium hydroxide. The treatment processes was described and evaluated. The physical properties (linear density, diameter and extraction yield), and the mechanical properties (tenacity) of WPF were measured. The optimum extraction condition has been determined by a statistical study using desirability function. Obtained fibres under optimal conditions were characterized with morphological test (SEM), chemical tests (FT-IR spectra, X ray diffraction) and thermal test (TGA). Fibre obtained can be employed on technical textile applications and in particular drylaid nonwoven.

The Journal of The Textile Institute

AATCC Journal of Research

Journal of Industrial Textiles

The removal of agriculture residual plastic films is nowadays a big concern for all environmental... more The removal of agriculture residual plastic films is nowadays a big concern for all environmentalists. Several ecological alternatives were developed for more sustainable products and cleaner production. In this work, the effect of 3 months of exposure under accelerated weathering conditions (UV light, moisture and heat) on the properties of two textile waste nonwovens as a sustainable alternative to plastic mulching films, was investigated. Results showed that thermostability and mechanical properties of the clothing textile waste felt (TWF) and cotton waste nonwoven (CWNW) decreased after accelerated weathering. The chemical variation of CWNW and TWF as well as the degradation rate of natural and synthetic fibers due to the photolysis and hydrolysis caused by accelerated weathering conditions were studied following the FTIR spectroscopy and the fibrous composition variation of the blended TWF structure during the study.

Environmental Science and Pollution Research, 2017

Recycling cotton waste derived from the textile industry was used as a low-cost precursor for the... more Recycling cotton waste derived from the textile industry was used as a low-cost precursor for the elaboration of an activated carbon (AC) through carbonization and zinc chloride chemical activation. The AC morphological, textural, and surface chemistry properties were determined using different analytical techniques including Fourier transform infrared, temperature programmed desorption-mass spectroscopy, nitrogen manometry and scanning electron microscopy. The results show that the AC was with a hollow fiber structure in an apparent diameter of about 6.5 μm. These analyses indicate that the AC is microporous and present a uniform pore size distributed centered around 1 nm. The surface area and micropore volume were 292 m(2).g(-1) and 0.11 cm(3).g(-1), respectively. Several types of acidic and basic oxygenated surface groups were highlighted. The point of zero charge (pHPZC) of theca was 6.8. The AC performance was evaluated for the removal of Alizarin Red S (ARS) from aqueous solution. The maximum adsorption capacity was 74 mg.g(-1) obtained at 25 °C and pH = 3. Kinetics and equilibrium models were used to determine the interaction nature of the ARS with the AC. Statistical tools were used to select the suitable models. The pseudo-second order was found to be the most appropriate kinetic model. The application of two and three isotherm models shows that Langmuir-Freundlich (n = 0.84, K = 0.0014 L.mg(-1), and q = 250 mg.g(-1)) and Sips (n = 0.84, K = 0.003 L.mg(-1), and q = 232.6 mg.g(-1)) were the suitable models. The results demonstrated that cotton waste can be used in the textile industry as a low-cost precursor for the AC synthesis and the removal of anionic dye from textile wastewater.

Advances in Materials Physics and Chemistry, 2016

The aim of this study is to investigate the effect of chemical treatment method on the properties... more The aim of this study is to investigate the effect of chemical treatment method on the properties of Posidonia fibers. The chemical treatment which is carried out is a combined hydrogen peroxide and sodium hydroxide treatment. First, an investigation of the treatment processes was undertaken. Secondly, the physical properties (linear density, diameter and ratio length per diameter), the mechanical properties (tenacity, elongation) and chemical properties (FT-IR spectra and X ray diffraction) of posidonia fibers were investigated. The optimum operating conditions were identified using a factorial design.

2016 7th International Renewable Energy Congress (IREC), 2016

In this study, activated carbon (AC) was prepared from waste cotton generated from the Tunisian s... more In this study, activated carbon (AC) was prepared from waste cotton generated from the Tunisian spinning industry. AC was prepared using a carbonization at 700°C followed by a chemical activation (with H3PO4 and ZnCL2). Thermogravimetric analysis was used to analyze the carbonization step. There was a considerable decrease in weight loss in the region of 280°C to 380°C attributed mainly to the cellulose degradation. In a second step, the activated carbons were characterized different analytical techniques. In particular, the effect of carbonization and chemical activation on the cross-section and surface was detected with SEM. In addition, FTIR analysis showed the disappearance of many surface groups in range between 2000 cm-1 and 4000 cm-1 after activation while TPD-MS showed that with the acidic character of the activated carbon with H3PO4 comparing to ZnCL2. ZnCL2 activated carbon was used for the removal of textile dye, namely Alizarin S from aqueous solution for different experimental conditions. The maximum adsorption capacity of Alizarin S was Qmax= 181mg/g obtained at pH =3 and T=25°C.

Industrial Crops and Products, 2016

Annales de Chimie Science des Matériaux

Les performances d'une structure absorbante de couche bebe depend en grande partie de ses com... more Les performances d'une structure absorbante de couche bebe depend en grande partie de ses composantes. Le voile de surface ainsi que la compression de la structure sont, parmi d'autres parametres, des facteurs qui jouent un role fondamental dans l'amelioration de ces performances et influencent l'aptitude de la structure a recevoir et distribuer le liquide. Cette etude montre, dans un premier temps, qu'il existe une quantite seuil de Polymere Super Absorbant (PSA) (15-20 % dans notre cas) a partir de laquelle un ajout de quantite supplementaire de PSA n'apporte pas d'amelioration significative, et que l'absorption du liquide par une structure absorbante passe par trois phases : mouillage, penetration et diffusion. Par ailleurs, un modele mathematique de type exponentiel a ete etabli. Il permet de predire l'evolution de la quantite de liquide absorbe en fonction du temps en tenant compte des parametres de la porosite du voile de surface et de ceux de la totalite de la structure.

Journal of Textile and Apparel, Technology and Management

Monitoring the state and the efficiency of cleaning and carding equipment is a good method of det... more Monitoring the state and the efficiency of cleaning and carding equipment is a good method of determining if the equipment is operating properly to get a better understanding about the actual machine performance. The paper attempts to develop and prove different empiric formulas to determine the partial efficiency index of spinning machines (machines of blowroom and cards) such as: Cleaning efficiency, Nep increase efficiency, Nep removal efficiency, Percent short fiber efficiency, Tenacity efficiency and Length efficiency. The implicit goal is to be able to evaluate the global efficiency index of various spinning machines by taking into account these different partial efficiency indexes. In addition, we proposed establishing an approach "Dynamic Method put in Scale (DMS)" which is an attempt to combine two techniques: objective reasoning and mathematical formulas to solve many complex system problems, especially when a system is difficult to model and control by a human operator or expert. We used the DMS to determine the global index efficiency, in order to solve a spinning problem by evaluation of the cleaners and simulating the efficiency for the different process stages during the treatment.

Open Journal of Applied Sciences, 2013

The performance prediction of hygienic products can be a major advantage for manufacturers. Among... more The performance prediction of hygienic products can be a major advantage for manufacturers. Among the interesting performances to be expected, we find the absorption capacity. This is a parameter governed by the composition of the absorbent core, particularly the fibrous component and the characteristics of the superabsorbent polymer (SAP). Thus, various theoretical models have been established to predict the absorption capacity. All these models have taken into account the nature of the fibrous support and the ratio of superabsorbent polymer. Certainly, other factors, less obvious in their modelling, are involved in determining the performance such as the homogeneity of the mixture formed by the fluff and SAP, the distribution of polymer particles in the entire structure, the porous structure, the shape of the capillary, the nature of the nonwoven webs used, etc. Various theoretical models are proposed here to describe the absorption capacity and we will outline the model which best describes this performance. The experimental test results are discussed to verify if the theoretical model selected can be confirmed.

pphmj.com

Improving thermal comfort of safety helmet becomes one of the major interests of helmet designers... more Improving thermal comfort of safety helmet becomes one of the major interests of helmet designers. This paper presents a numerical simulation of heat and mass transfer from the head to the helmet microclimate, which can avoid using thermal manikins and ...

Journal of Applied …, 2009

Abstract: The aim of this paper is a numerical simulation of heat and moisture exchange propertie... more Abstract: The aim of this paper is a numerical simulation of heat and moisture exchange properties of industrial helmet. In order to help designer to optimize the helmet thermal properties, the effect of thermal conductivity and liner thickness on the microclimate ...

Textile Research Journal, 2011

ABSTRACT This work discusses the contribution of the elastane filament (Spandex©) on the appearan... more ABSTRACT This work discusses the contribution of the elastane filament (Spandex©) on the appearance of wet pneumatic elastic denim core-spun yarn. The cross-section views of the splice region were investigated using the image analysis method. In fact, this work also defines developed parameters such as the cover factor and the relative distance for quantifying the contribution of Spandex© filament position to the spliced yarn appearance. To improve the objective method (the image analysis), the subjective one (the expert’s rating and the composite desirability) was discussed. Compared to the computer image analysis results, the desirability function provides nearly identical results and proves that appearance can be evaluated objectively. However, compared to the expert’s rating which can complete the computer results, it remains insufficient to subjectively classify the splice appearance. Hence, our findings show that the Spandex© filament angular position is influenced by the important splicing conditions (splice length and duration of water joining). By providing the adequate splicing condition adjustments high splice physical performance is given and a particularly good appearance.

Journal of Applied Sciences, 2007

Industria Textila

The yarn quality depends on many parameters: characteristics parameters, mechanical and physical ... more The yarn quality depends on many parameters: characteristics parameters, mechanical and physical properties. Making the hypothesis that the quality of the yarn is a multicriteria problem, in this paper, we propose a new method to determine the Quality Yarn Index QYI based on Analytic Hierarchy Process AHP and Fuzzy theory. A questionnaire was designed for experts of each field (weaving and knitting) to evaluate the relative importance for each property to determine coefficients of the AHP matrix. Results revealed that matrix coefficients changed with yarn application (weft or warp weaving and knitting) The QYI can be used in any application, where a rapid decision is needed, to evaluate the global quality of yarn and to make a comparison between different yarn qualities

Industria Textila

The aim of this study is to investigate the effect of extraction treatment method on the properti... more The aim of this study is to investigate the effect of extraction treatment method on the properties of WPF (Washingtonia palm fibres). The employed treatment is a combined mechanical and chemical sodium hydroxide. The treatment processes was described and evaluated. The physical properties (linear density, diameter and extraction yield), and the mechanical properties (tenacity) of WPF were measured. The optimum extraction condition has been determined by a statistical study using desirability function. Obtained fibres under optimal conditions were characterized with morphological test (SEM), chemical tests (FT-IR spectra, X ray diffraction) and thermal test (TGA). Fibre obtained can be employed on technical textile applications and in particular drylaid nonwoven.

The Journal of The Textile Institute

AATCC Journal of Research

Journal of Industrial Textiles

The removal of agriculture residual plastic films is nowadays a big concern for all environmental... more The removal of agriculture residual plastic films is nowadays a big concern for all environmentalists. Several ecological alternatives were developed for more sustainable products and cleaner production. In this work, the effect of 3 months of exposure under accelerated weathering conditions (UV light, moisture and heat) on the properties of two textile waste nonwovens as a sustainable alternative to plastic mulching films, was investigated. Results showed that thermostability and mechanical properties of the clothing textile waste felt (TWF) and cotton waste nonwoven (CWNW) decreased after accelerated weathering. The chemical variation of CWNW and TWF as well as the degradation rate of natural and synthetic fibers due to the photolysis and hydrolysis caused by accelerated weathering conditions were studied following the FTIR spectroscopy and the fibrous composition variation of the blended TWF structure during the study.

Environmental Science and Pollution Research, 2017

Recycling cotton waste derived from the textile industry was used as a low-cost precursor for the... more Recycling cotton waste derived from the textile industry was used as a low-cost precursor for the elaboration of an activated carbon (AC) through carbonization and zinc chloride chemical activation. The AC morphological, textural, and surface chemistry properties were determined using different analytical techniques including Fourier transform infrared, temperature programmed desorption-mass spectroscopy, nitrogen manometry and scanning electron microscopy. The results show that the AC was with a hollow fiber structure in an apparent diameter of about 6.5 μm. These analyses indicate that the AC is microporous and present a uniform pore size distributed centered around 1 nm. The surface area and micropore volume were 292 m(2).g(-1) and 0.11 cm(3).g(-1), respectively. Several types of acidic and basic oxygenated surface groups were highlighted. The point of zero charge (pHPZC) of theca was 6.8. The AC performance was evaluated for the removal of Alizarin Red S (ARS) from aqueous solution. The maximum adsorption capacity was 74 mg.g(-1) obtained at 25 °C and pH = 3. Kinetics and equilibrium models were used to determine the interaction nature of the ARS with the AC. Statistical tools were used to select the suitable models. The pseudo-second order was found to be the most appropriate kinetic model. The application of two and three isotherm models shows that Langmuir-Freundlich (n = 0.84, K = 0.0014 L.mg(-1), and q = 250 mg.g(-1)) and Sips (n = 0.84, K = 0.003 L.mg(-1), and q = 232.6 mg.g(-1)) were the suitable models. The results demonstrated that cotton waste can be used in the textile industry as a low-cost precursor for the AC synthesis and the removal of anionic dye from textile wastewater.

Advances in Materials Physics and Chemistry, 2016

The aim of this study is to investigate the effect of chemical treatment method on the properties... more The aim of this study is to investigate the effect of chemical treatment method on the properties of Posidonia fibers. The chemical treatment which is carried out is a combined hydrogen peroxide and sodium hydroxide treatment. First, an investigation of the treatment processes was undertaken. Secondly, the physical properties (linear density, diameter and ratio length per diameter), the mechanical properties (tenacity, elongation) and chemical properties (FT-IR spectra and X ray diffraction) of posidonia fibers were investigated. The optimum operating conditions were identified using a factorial design.

2016 7th International Renewable Energy Congress (IREC), 2016

In this study, activated carbon (AC) was prepared from waste cotton generated from the Tunisian s... more In this study, activated carbon (AC) was prepared from waste cotton generated from the Tunisian spinning industry. AC was prepared using a carbonization at 700°C followed by a chemical activation (with H3PO4 and ZnCL2). Thermogravimetric analysis was used to analyze the carbonization step. There was a considerable decrease in weight loss in the region of 280°C to 380°C attributed mainly to the cellulose degradation. In a second step, the activated carbons were characterized different analytical techniques. In particular, the effect of carbonization and chemical activation on the cross-section and surface was detected with SEM. In addition, FTIR analysis showed the disappearance of many surface groups in range between 2000 cm-1 and 4000 cm-1 after activation while TPD-MS showed that with the acidic character of the activated carbon with H3PO4 comparing to ZnCL2. ZnCL2 activated carbon was used for the removal of textile dye, namely Alizarin S from aqueous solution for different experimental conditions. The maximum adsorption capacity of Alizarin S was Qmax= 181mg/g obtained at pH =3 and T=25°C.

Industrial Crops and Products, 2016

Annales de Chimie Science des Matériaux

Les performances d'une structure absorbante de couche bebe depend en grande partie de ses com... more Les performances d'une structure absorbante de couche bebe depend en grande partie de ses composantes. Le voile de surface ainsi que la compression de la structure sont, parmi d'autres parametres, des facteurs qui jouent un role fondamental dans l'amelioration de ces performances et influencent l'aptitude de la structure a recevoir et distribuer le liquide. Cette etude montre, dans un premier temps, qu'il existe une quantite seuil de Polymere Super Absorbant (PSA) (15-20 % dans notre cas) a partir de laquelle un ajout de quantite supplementaire de PSA n'apporte pas d'amelioration significative, et que l'absorption du liquide par une structure absorbante passe par trois phases : mouillage, penetration et diffusion. Par ailleurs, un modele mathematique de type exponentiel a ete etabli. Il permet de predire l'evolution de la quantite de liquide absorbe en fonction du temps en tenant compte des parametres de la porosite du voile de surface et de ceux de la totalite de la structure.

Journal of Textile and Apparel, Technology and Management

Monitoring the state and the efficiency of cleaning and carding equipment is a good method of det... more Monitoring the state and the efficiency of cleaning and carding equipment is a good method of determining if the equipment is operating properly to get a better understanding about the actual machine performance. The paper attempts to develop and prove different empiric formulas to determine the partial efficiency index of spinning machines (machines of blowroom and cards) such as: Cleaning efficiency, Nep increase efficiency, Nep removal efficiency, Percent short fiber efficiency, Tenacity efficiency and Length efficiency. The implicit goal is to be able to evaluate the global efficiency index of various spinning machines by taking into account these different partial efficiency indexes. In addition, we proposed establishing an approach "Dynamic Method put in Scale (DMS)" which is an attempt to combine two techniques: objective reasoning and mathematical formulas to solve many complex system problems, especially when a system is difficult to model and control by a human operator or expert. We used the DMS to determine the global index efficiency, in order to solve a spinning problem by evaluation of the cleaners and simulating the efficiency for the different process stages during the treatment.

Open Journal of Applied Sciences, 2013

The performance prediction of hygienic products can be a major advantage for manufacturers. Among... more The performance prediction of hygienic products can be a major advantage for manufacturers. Among the interesting performances to be expected, we find the absorption capacity. This is a parameter governed by the composition of the absorbent core, particularly the fibrous component and the characteristics of the superabsorbent polymer (SAP). Thus, various theoretical models have been established to predict the absorption capacity. All these models have taken into account the nature of the fibrous support and the ratio of superabsorbent polymer. Certainly, other factors, less obvious in their modelling, are involved in determining the performance such as the homogeneity of the mixture formed by the fluff and SAP, the distribution of polymer particles in the entire structure, the porous structure, the shape of the capillary, the nature of the nonwoven webs used, etc. Various theoretical models are proposed here to describe the absorption capacity and we will outline the model which best describes this performance. The experimental test results are discussed to verify if the theoretical model selected can be confirmed.

pphmj.com

Improving thermal comfort of safety helmet becomes one of the major interests of helmet designers... more Improving thermal comfort of safety helmet becomes one of the major interests of helmet designers. This paper presents a numerical simulation of heat and mass transfer from the head to the helmet microclimate, which can avoid using thermal manikins and ...

Journal of Applied …, 2009

Abstract: The aim of this paper is a numerical simulation of heat and moisture exchange propertie... more Abstract: The aim of this paper is a numerical simulation of heat and moisture exchange properties of industrial helmet. In order to help designer to optimize the helmet thermal properties, the effect of thermal conductivity and liner thickness on the microclimate ...

Textile Research Journal, 2011

ABSTRACT This work discusses the contribution of the elastane filament (Spandex©) on the appearan... more ABSTRACT This work discusses the contribution of the elastane filament (Spandex©) on the appearance of wet pneumatic elastic denim core-spun yarn. The cross-section views of the splice region were investigated using the image analysis method. In fact, this work also defines developed parameters such as the cover factor and the relative distance for quantifying the contribution of Spandex© filament position to the spliced yarn appearance. To improve the objective method (the image analysis), the subjective one (the expert’s rating and the composite desirability) was discussed. Compared to the computer image analysis results, the desirability function provides nearly identical results and proves that appearance can be evaluated objectively. However, compared to the expert’s rating which can complete the computer results, it remains insufficient to subjectively classify the splice appearance. Hence, our findings show that the Spandex© filament angular position is influenced by the important splicing conditions (splice length and duration of water joining). By providing the adequate splicing condition adjustments high splice physical performance is given and a particularly good appearance.

Journal of Applied Sciences, 2007