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Research paper thumbnail of Development of "green" bio-nanocomposites based on starch and halloysites with controlled bulk or porous structure for biomedical application

HAL (Le Centre pour la Communication Scientifique Directe), Mar 10, 2014

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Research paper thumbnail of Développement de bio-nanocomposites « verts » amidon/halloysites à structure massive ou poreuse d’intérêt biomédical

HAL (Le Centre pour la Communication Scientifique Directe), Nov 20, 2014

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Research paper thumbnail of Electric and dielectrical properties of carbon nanotube filled polypropylene nanocomposites

HAL (Le Centre pour la Communication Scientifique Directe), Sep 7, 2009

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Research paper thumbnail of Compounding of masterbatch-based multi-walled carbon nanotube filled polypropylene nanocomposites: assessment of rheological and mechanical properties

HAL (Le Centre pour la Communication Scientifique Directe), Oct 3, 2007

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Research paper thumbnail of Electrical and Dielectric Properties of Multi-Walled Carbon Nanotube Filled Polypropylene Nanocomposites

Polymers & Polymer Composites, Nov 1, 2010

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Research paper thumbnail of Water-assited extrusion compounding process to reduce the total Volatile organic compounds in natural fibre-filled composites for automotive interior applications

HAL (Le Centre pour la Communication Scientifique Directe), Jun 26, 2018

International audienceNatural fibre-filled composites are recently considered to be used in inter... more International audienceNatural fibre-filled composites are recently considered to be used in interior parts of vehicles because of their eco-friendly and mechanical performance [1-3]. However, they emit VOCs at all stages of their life cycle, such as compounding, injection-moulding and usage [4]. In the present study water-assisted extrusion compounding process has been used to reduce the VOC emission during the usage of injection-moulded parts. Flax and hemp fibres (20 wt.%) reinforced polypropylene composites were compounded in presence of maleic anhydride grafted polypropylene (PP-g-MA) as compatibilizer using twin screw extrusion, with and without water injection during extrusion. Then the compounds where injection-moulded into standard test specimen. Physical and mechanical properties such as morphological, fibre length, tensile and impact properties were characterized as well as the total volatile organic compounds (TVOCs) and odour emission using automotive standard D42 3109-C. Released TVOCs from the composite products were quantified by air sampling on adsorbent followed by thermal desorption and GC-MS analysis. The scanning electron microscopic observation indicated a good dispersion of fibres in the matrix with a low reduction in average length and aspect ratio of fibres. Mechanical properties of samples produced with water-assisted compounding showed slightly reduced modulus and strength compared to the samples prepared without water assistance. For both flax and hemp fibre-reinforced composites, TVOC emissions are reduced by 94% and 30% respectively with water-assisted extrusion. So, the water-assisted extrusion process has proved its effectiveness in reducing VOCs emissions without scarifying the mechanical properties

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Research paper thumbnail of Present Status and Key Challenges of Carbon Nanotubes Reinforced Polyolefins: A Review on Nanocomposites Manufacturing and Performance Issues

Polymers & Polymer Composites, May 1, 2009

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Research paper thumbnail of Poly(lactic acid)/halloysite nanotubes nanocomposites: Structure, thermal, and mechanical properties as a function of halloysite treatment

Journal of Applied Polymer Science, 2012

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Research paper thumbnail of Multi-walled carbon nanotube filled polypropylene nanocomposites based on a masterbatch route: Optimization of CNTs dispersion

HAL (Le Centre pour la Communication Scientifique Directe), Jun 15, 2008

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Research paper thumbnail of Properties of poly(D,L-lactide)-based nanocomposites

HAL (Le Centre pour la Communication Scientifique Directe), Sep 27, 2006

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Research paper thumbnail of Impact de la mise en forme de polylactide sur l'émission de COVs

HAL (Le Centre pour la Communication Scientifique Directe), Oct 16, 2011

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Research paper thumbnail of Method for extruding a polymer in the presence of water

The invention relates to a method for converting a polycondensed elastomeric thermoplastic polyme... more The invention relates to a method for converting a polycondensed elastomeric thermoplastic polymer, including a step of extruding the polycondensed elastomeric thermoplastic polymer in the presence of water. The polycondensed elastomeric thermoplastic polymer is in particular chosen from copolymer block amides, copolyethers or copolyester block urethanes, copolyether block esters and the mixtures thereof, and is preferably a copolyether block amid

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Research paper thumbnail of Polymer nanocomposites based on unmodified Montmorillonite: Water assisted extrusion

International audienc

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Research paper thumbnail of Effect of nanoclay on dimensional stability and optical properties of injection-moulded polypropylene parts

International audienc

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Research paper thumbnail of Melt-processing, structure and properties of thermoplastic starch: Effect of storage time and plasticizers on the structural stability

International audienc

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Research paper thumbnail of Nanocomposites from unmodified clay and copolyetheramide by water-assisted melt processing

International audienc

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Research paper thumbnail of Structure and properties of PA6-based nanocomposites blown films

HAL (Le Centre pour la Communication Scientifique Directe), Sep 28, 2005

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Research paper thumbnail of Polymères conducteurs thermiques pour échangeurs de chaleur

HAL (Le Centre pour la Communication Scientifique Directe), 2017

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Research paper thumbnail of Odour and VOC emissions from PLA materials: Food packaging and automotive applications

International audienc

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Research paper thumbnail of Coupling inverse fin method with infrared thermography to determine the effective thermal conductivity of extruded thermoplastic foams

An inverse method for determining the in-plane effective thermal conductivity of porous thermopla... more An inverse method for determining the in-plane effective thermal conductivity of porous thermoplastics was implemented by coupling infrared thermography experiments and numerical simulation of heat transfer in straight fins having temperature-dependent convective heat transfer coefficient. The microstructure heterogeneity of extruded polyethylene foam, in which pores are filled with air with different levels of open and closed porosity, was taken into account. The obtained effective thermal conductivity values were compared with previous results obtained using a numerical solution based on periodic homogenization techniques (NSHT) and the transient plane source technique (TPS) to verify the accuracy of the proposed method. The results show that the suggested method is in good agreement with both NSHT and TPS. Moreover, it is also appropriate for structural materials such as unidirectional fiber-reinforced plastic composites, where heat transfer is very different according to the fib...

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Research paper thumbnail of Development of "green" bio-nanocomposites based on starch and halloysites with controlled bulk or porous structure for biomedical application

HAL (Le Centre pour la Communication Scientifique Directe), Mar 10, 2014

International audienc

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Research paper thumbnail of Développement de bio-nanocomposites « verts » amidon/halloysites à structure massive ou poreuse d’intérêt biomédical

HAL (Le Centre pour la Communication Scientifique Directe), Nov 20, 2014

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Research paper thumbnail of Electric and dielectrical properties of carbon nanotube filled polypropylene nanocomposites

HAL (Le Centre pour la Communication Scientifique Directe), Sep 7, 2009

International audienc

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Research paper thumbnail of Compounding of masterbatch-based multi-walled carbon nanotube filled polypropylene nanocomposites: assessment of rheological and mechanical properties

HAL (Le Centre pour la Communication Scientifique Directe), Oct 3, 2007

International audienc

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Research paper thumbnail of Electrical and Dielectric Properties of Multi-Walled Carbon Nanotube Filled Polypropylene Nanocomposites

Polymers & Polymer Composites, Nov 1, 2010

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Research paper thumbnail of Water-assited extrusion compounding process to reduce the total Volatile organic compounds in natural fibre-filled composites for automotive interior applications

HAL (Le Centre pour la Communication Scientifique Directe), Jun 26, 2018

International audienceNatural fibre-filled composites are recently considered to be used in inter... more International audienceNatural fibre-filled composites are recently considered to be used in interior parts of vehicles because of their eco-friendly and mechanical performance [1-3]. However, they emit VOCs at all stages of their life cycle, such as compounding, injection-moulding and usage [4]. In the present study water-assisted extrusion compounding process has been used to reduce the VOC emission during the usage of injection-moulded parts. Flax and hemp fibres (20 wt.%) reinforced polypropylene composites were compounded in presence of maleic anhydride grafted polypropylene (PP-g-MA) as compatibilizer using twin screw extrusion, with and without water injection during extrusion. Then the compounds where injection-moulded into standard test specimen. Physical and mechanical properties such as morphological, fibre length, tensile and impact properties were characterized as well as the total volatile organic compounds (TVOCs) and odour emission using automotive standard D42 3109-C. Released TVOCs from the composite products were quantified by air sampling on adsorbent followed by thermal desorption and GC-MS analysis. The scanning electron microscopic observation indicated a good dispersion of fibres in the matrix with a low reduction in average length and aspect ratio of fibres. Mechanical properties of samples produced with water-assisted compounding showed slightly reduced modulus and strength compared to the samples prepared without water assistance. For both flax and hemp fibre-reinforced composites, TVOC emissions are reduced by 94% and 30% respectively with water-assisted extrusion. So, the water-assisted extrusion process has proved its effectiveness in reducing VOCs emissions without scarifying the mechanical properties

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Research paper thumbnail of Present Status and Key Challenges of Carbon Nanotubes Reinforced Polyolefins: A Review on Nanocomposites Manufacturing and Performance Issues

Polymers & Polymer Composites, May 1, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Poly(lactic acid)/halloysite nanotubes nanocomposites: Structure, thermal, and mechanical properties as a function of halloysite treatment

Journal of Applied Polymer Science, 2012

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Research paper thumbnail of Multi-walled carbon nanotube filled polypropylene nanocomposites based on a masterbatch route: Optimization of CNTs dispersion

HAL (Le Centre pour la Communication Scientifique Directe), Jun 15, 2008

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Research paper thumbnail of Properties of poly(D,L-lactide)-based nanocomposites

HAL (Le Centre pour la Communication Scientifique Directe), Sep 27, 2006

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Research paper thumbnail of Impact de la mise en forme de polylactide sur l'émission de COVs

HAL (Le Centre pour la Communication Scientifique Directe), Oct 16, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Method for extruding a polymer in the presence of water

The invention relates to a method for converting a polycondensed elastomeric thermoplastic polyme... more The invention relates to a method for converting a polycondensed elastomeric thermoplastic polymer, including a step of extruding the polycondensed elastomeric thermoplastic polymer in the presence of water. The polycondensed elastomeric thermoplastic polymer is in particular chosen from copolymer block amides, copolyethers or copolyester block urethanes, copolyether block esters and the mixtures thereof, and is preferably a copolyether block amid

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Polymer nanocomposites based on unmodified Montmorillonite: Water assisted extrusion

International audienc

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Research paper thumbnail of Effect of nanoclay on dimensional stability and optical properties of injection-moulded polypropylene parts

International audienc

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Research paper thumbnail of Melt-processing, structure and properties of thermoplastic starch: Effect of storage time and plasticizers on the structural stability

International audienc

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Nanocomposites from unmodified clay and copolyetheramide by water-assisted melt processing

International audienc

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Structure and properties of PA6-based nanocomposites blown films

HAL (Le Centre pour la Communication Scientifique Directe), Sep 28, 2005

International audienc

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Polymères conducteurs thermiques pour échangeurs de chaleur

HAL (Le Centre pour la Communication Scientifique Directe), 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Odour and VOC emissions from PLA materials: Food packaging and automotive applications

International audienc

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Coupling inverse fin method with infrared thermography to determine the effective thermal conductivity of extruded thermoplastic foams

An inverse method for determining the in-plane effective thermal conductivity of porous thermopla... more An inverse method for determining the in-plane effective thermal conductivity of porous thermoplastics was implemented by coupling infrared thermography experiments and numerical simulation of heat transfer in straight fins having temperature-dependent convective heat transfer coefficient. The microstructure heterogeneity of extruded polyethylene foam, in which pores are filled with air with different levels of open and closed porosity, was taken into account. The obtained effective thermal conductivity values were compared with previous results obtained using a numerical solution based on periodic homogenization techniques (NSHT) and the transient plane source technique (TPS) to verify the accuracy of the proposed method. The results show that the suggested method is in good agreement with both NSHT and TPS. Moreover, it is also appropriate for structural materials such as unidirectional fiber-reinforced plastic composites, where heat transfer is very different according to the fib...

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Research paper thumbnail of Bioplastics and Vegetal Fiber Reinforced Bioplastics for Automotive Applications

Handbook of Bioplastics and Biocomposites Engineering Applications, 2011

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