Luc Avérous
University of Strasbourg, ICPEES, Faculty Member
- Biopolymers, Biomaterials, Biodegradable Polymers, Biobased Polymer, Biobased materials, Industrial Biotechnology, and 3 moreBiocatalysis (Chemistry), Polymer synthesis and modification, and Biodegradable Natural/synthetic Polymer Composites(Biocatalysis (Chemistry), Polymer synthesis and modification, and Biodegradable Natural/synthetic Polymer Composites)edit
- Biodegradable Materials based on Polymers, and corresponding multiphase systems (for biomedical applications, compost... moreBiodegradable Materials based on Polymers, and corresponding multiphase systems (for biomedical applications, compostable packaging, ...):
Thermoplastic starch, thermoplastic chitosan,
Bio(co)polyesters: PLA, PCL, PHA, PBSA, PBS, PBAT ...
Synthesis by Enzymatic Catalysis of biopolyesters.
New Biobased and Durable Materials (for building, automotive industries ...):
New Vegetable oil-based polymers.
New aromatic macromolecular architectures based on lignins and tannins.
Novative Biobased TPU, PU, NIPU & PA.
Specific Biomedical Developments:
Tissue Engineering, scaffolds developed by electrospinning.
Wound dressings.
Biosensors, Drug Release ...(Biodegradable Materials based on Polymers, and corresponding multiphase systems (for biomedical applications, compostable packaging, ...): <br />Thermoplastic starch, thermoplastic chitosan, <br />Bio(co)polyesters: PLA, PCL, PHA, PBSA, PBS, PBAT ... <br />Synthesis by Enzymatic Catalysis of biopolyesters. <br /> <br />New Biobased and Durable Materials (for building, automotive industries ...): <br />New Vegetable oil-based polymers. <br />New aromatic macromolecular architectures based on lignins and tannins. <br />Novative Biobased TPU, PU, NIPU & PA. <br /> <br />Specific Biomedical Developments: <br />Tissue Engineering, scaffolds developed by electrospinning. <br />Wound dressings. <br />Biosensors, Drug Release ...)edit
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ABSTRACT Export Date: 16 December 2013, Source: Scopus
ABSTRACT Export Date: 16 December 2013, Source: Scopus
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Polymer materials and sustainable development The second half of the 20(th) century, sometimes called "the plastic age", knew a boom of polymer materials in all the sectors of industrial activity. Nowadays, although polymer... more
Polymer materials and sustainable development The second half of the 20(th) century, sometimes called "the plastic age", knew a boom of polymer materials in all the sectors of industrial activity. Nowadays, although polymer production is continuously growing, all the developed countries are facing new challenges regarding the rarefaction of fossil resources and the sustainable development. Many research works performed in the institutions affiliated to the "Federation Gay-Lussac" aim to contribute to this field by exploring some new aspects of polymer science. They include: unusual polymerization reactions, new types of tri-dimensional networks, valorization of natural polymers, biocomposites and nano-biocomposites, durability of polymeric products.
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Export Date: 3 April 2014, Source: Scopus, References: Averous, L., Boquillon, N., (2004) Carbohydrate Polymers, 56 (2), pp. 111-122;
Export Date: 3 April 2014, Source: Scopus, References: Schmid, R., Verger, R., (1998) Angewandte Chemie International Edition, 37, pp. 1608-1633;
Export Date: 23 March 2011, Source: Scopus, CODEN: CAPOD, doi: 10.1016/j.carbpol.2010.09.003, Language of Original Document: English, Correspondence Address: Avérous, L.; LIPHT-ECPM, EAc(CNRS) 4379, Université de Strasbourg, 25 rue... more
Export Date: 23 March 2011, Source: Scopus, CODEN: CAPOD, doi: 10.1016/j.carbpol.2010.09.003, Language of Original Document: English, Correspondence Address: Avérous, L.; LIPHT-ECPM, EAc(CNRS) 4379, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France; email: luc.averous@unistra.fr, References: Avérous, L., Biodegradable multiphase systems based on plasticized starch: A review (2004) Journal of Macromolecular Science: Polymer Reviews, 44 (3), pp. 231-274;
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Export Date: 24 September 2013, Source: Scopus
Herein, it is demonstrated that star pseudopolyrotaxanes (star-pPRs) obtained from the inclusion complexation of α-cyclodextrin (CD) and four-branched star poly(ε-caprolactone) (star-PCL) organize into nanoplatelets in dimethyl sulfoxide... more
Herein, it is demonstrated that star pseudopolyrotaxanes (star-pPRs) obtained from the inclusion complexation of α-cyclodextrin (CD) and four-branched star poly(ε-caprolactone) (star-PCL) organize into nanoplatelets in dimethyl sulfoxide at 35 °C. This peculiar property, not observed for linear pseudopolyrotaxanes, allows the processing of star-pPRs while preserving their supramolecular assembly. Thus, original PCL:star-pPR core:shell nanofibers are elaborated by coaxial electrospinning. The star-pPR shell ensures the presence of available CD hydroxyl functions on the fiber surface allowing its postfunctionalization. As proof of concept, fluorescein isothiocyanate is grafted. Moreover, the morphology of the fibers is maintained due to the star-pPR shell that acts as a shield, preventing the fiber dissolution during chemical modification. The proposed strategy is simple and avoids the synthesis of polyrotaxanes, i.e., pPR end-capping to prevent the CD dethreading. As PCL is widely us...
Research Interests: Engineering, Nanofibers, CHEMICAL SCIENCES, Rotaxanes, Cyclodextrins, and 2 morePolyesters and Poloxamer(Polyesters and Poloxamer)
(Polyesters and Poloxamer)
ABSTRACT Lipase-based catalysts were tested for the ring-opening polymerization of D-, L- and D,L-lactide isomers, highlighting the different specificity of the enzyme toward these isomers. Free form of Candida antarctica lipase B (CALB)... more
ABSTRACT Lipase-based catalysts were tested for the ring-opening polymerization of D-, L- and D,L-lactide isomers, highlighting the different specificity of the enzyme toward these isomers. Free form of Candida antarctica lipase B (CALB) and its clay- and acrylic resin- immobilized forms were compared. For L- and D,L-lactide monomers only short oligomers were obtained. The acrylic resin immobilized form of CALB (NOVO-435) led to a complete conversion of D-lactide to PDLA with a Mn of 2|600 g/mol, whereas the clay-immobilized and free forms of CALB exhibited slower kinetics and produced chains of lower Mn. Copolymerization reactions between ɛ-caprolactone and lactide isomers were performed using NOVO-435 as bio-catalyst. Random copolyesters were successfully synthesized by copolymerizing D-lactide with ɛ-caprolactone. Better results were obtained with a two-step reaction, starting from presynthesized polycaprolactone chains, compared with the one-pot copolymerization. Conducting this two-step copolymerization in the presence of organo-modified montmorillonite allowed the successful synthesis of copolymer/clay nanohybrids.
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Two different solvent mixtures, chloroform/dimethylformamide (DMF) and chloroform/ acetone, in 60/40 v/v concentrations, were used to electrospin poly(D,L-lactic acid) (PDLLA). The influence of solvent type, solution concentration, and... more
Two different solvent mixtures, chloroform/dimethylformamide (DMF) and chloroform/ acetone, in 60/40 v/v concentrations, were used to electrospin poly(D,L-lactic acid) (PDLLA). The influence of solvent type, solution concentration, and processing conditions on the morphology and properties of the electrospun mats was studied. The nanofibers characterization was done by scanning electron microscopy (SEM), wide-angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC).
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ABSTRACT New fully biobased thermoplastic Polyurethanes were synthesized and characterized.•Copolymers are synthesized with three different biobased building blocks.•Substitution of BDO by ISO altered the thermal behavior, and... more
ABSTRACT New fully biobased thermoplastic Polyurethanes were synthesized and characterized.•Copolymers are synthesized with three different biobased building blocks.•Substitution of BDO by ISO altered the thermal behavior, and crystallinity.•All polymers showed hard and soft segments segregation.•Polyurethanes with low ISO contents show high elongations and modulus.
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Research Interests: Engineering, Materials Engineering, Chemical Engineering, Analytical Chemistry, Organic Chemistry, and 10 morePolymer science, Cooling Rate, Activation Energy, Polypropylene, CHEMICAL SCIENCES, Poly Ethylene Glycol, Calcium Carbonate, Lumping Kinetic Model, Crystallization Kinetics, and Polarized Light Microscopy
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ABSTRACT The last decade has seen the development of an alternative chemistry, which intends to reduce the human impact on the environment. The polymers are obviously involved into this tendency and numerous bio-sourced plastics... more
ABSTRACT The last decade has seen the development of an alternative chemistry, which intends to reduce the human impact on the environment. The polymers are obviously involved into this tendency and numerous bio-sourced plastics (bioplastics), such as polylactide, plasticized starch, etc., have been elaborated. However, even if a lot of commercial products are now available, their properties (mechanical properties, moisture sensitivity) have to be enhanced to be really competitive with the petroleum-based plastics. One of the most promising answers to overcome these weaknesses is the elaboration of nano-biocomposites, namely the dispersion of nano-sized filler into a biopolymer matrix. This review reports the last developments in nano-biocomposites based on polysaccharides and nanoclays. The main elaboration strategies developed in starch, chitosan, cellulose acetate and pectin based nano-biocomposites elaborated with montmorillonite as the nanofiller are exposed herein. The corresponding dispersion state and properties are discussed.
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In the recent years, bio-based products have raised great interest since sustainable development policies tend to expand with the decreasing reserve of fossil fuel and the growing concern for the environment. Consequently, biopolymers,... more
In the recent years, bio-based products have raised great interest since sustainable development policies tend to expand with the decreasing reserve of fossil fuel and the growing concern for the environment. Consequently, biopolymers, i.e., biodegradable polymers, have been the topic of many researches. They can be mainly classified as agro-polymers (starch, protein, etc.) and biodegradable polyesters (polyhydroxyalkanoates, poly(lactic acid), etc.).
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... Guy Della Valle INRA, rue de la Ge´raudie`re, BP 71627, 44316 Nantes Cedex, 3 France ... Native starch aqueous suspensions, 4% weight (dry ba-sis), were heated at120°C for 20 min in a commercial pressure cooker (SEB, France). ...