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Journal of Renewable Materials 2018年第2期6卷 217-218页

作者： Hamid Kaddami bernard cathala Laboratory of Organometallic Macromolecular Chemistry and Composites Materials Cadi Ayyad UniversityAvenue Abdelkrim ElkhattabiB.P.549MarrakechMorocco The INRA–Biopolymers–Interaction and Assemblies(BIA) Rue de la Géraudière BP 7162744316 Nantes Cedex 3France

This special issue of Journal of Renewable Materials contains the contributions of authors in attendance at the 4th International Conference on Biobased Materials and Composites(ICBMC’17)held at the INRA-BIA unit in Nantes,*** conference is one of the most successful scientific events in the field of biobased materials and *** goal of the ICBMC conferences is to foster an understanding of scientific and technical progress,and knowledge of the field of natural polymers extraction,biopolymers,biomaterials and their blends,composites,and biobased materials for energy conversion and IPNs.

关键词： composites biomaterials knowledge

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Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals:A Kinetic Study Using Quartz Crystal Microbalance

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Journal of Renewable Materials 2020年第1期8卷 29-43页

作者： Maud Chemin Céline Moreau bernard cathala Ana Villares INRAE UR BIAF-44316NantesFrance

In this work,we studied the adsorption of modified cellulose nanocrystals onto solid surfaces by quartz crystal microbalance with dissipation monitoring(QCM-D).Cellulose nanocrystals obtained from tunicate(CNC)were modified at reducing end by amidation *** different functionalities were investigated:a polyamine dendrimer(CNC-NH_(2)),which interacts with gold surface by the amine groups;and a biotin moiety(CNC-Biot),which has a strong affinity for the protein streptavidin(SAV).QCM-D results revealed different adsorption behaviors between modified and unmodified ***,unmodified CNCs covered almost all the surface forming a rigid and flat layer whereas reducing end modified CNCs remained rather upright forming a hydrated and viscoelastic layer with lower surface *** analysis of adsorption kinetics allowed the calculation of an apparent collision rate factor,which resulted 10-fold higher for unmodified CNCs compared to reducing end modified CNCs,therefore,demonstrating the different adsorption behavior.

关键词： Cellulose nanocrystals amidation reducing-end modification Voight model collision rate efficiency factor rate constant

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Influence of Xyloglucan Molar Mass on Rheological Properties of Cellulose Nanocrystal/Xyloglucan Hydrogels

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Journal of Renewable Materials 2019年第12期7卷 1381-1390页

作者： Malika Talantikite Antoine Gourlay Sophie Le Gall bernard cathala UR1268 Biopolymères Interactions Assemblages INRA44316NantesFrance

Plant components are an inexhaustible source for the construction of bio-based *** we report,for the first time,the elaboration of biobased cellulose nanocrystals(CNC)/xyloglucan(XG)*** is a hemicellulose displaying a great affinity for cellulose surface and can be thus irreversibly adsorbed on *** of the hydrogels were investigated by varying the molar mass of XG either by enzymatic treatment with Endo-glucanase(EG2)or physical fractionation by ultrasound(US).Fractions were characterised by high-performance size exclusion chromatography(HPSEC)and their monosacchari decompositions were *** fractions with high,average and small molar mass,(800,300 and 100103 g/mol respectively),were selected in order to tune the properties of the ***-gel transition conditions were determined for each fraction by achieving phase diagram using the inverted tube *** properties,assessed by rheology,are improved by increasing XG molar mass since elastic modulus is higher for hydrogels formed with higher molar mass fractions as well as the strain at *** formation is likely due to the adsorption of XG fractions on CNC which increases the effective hydrodynamic volume of CNC leading to steric stabilization and interactions between loops and tails of XG adsorbed.

关键词： Cellulose nanocrystals xyloglucan fractions rheology hydrogels

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Carbon Nanotube/Cellulose Nanocrystal Hybrid Conducting Thin Films

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Journal of Renewable Materials 2018年第3期6卷 237-241页

作者： Christophe Olivier Jean Bruno Mougel Patricia Bertoncini Celine Moreau Isabelle Capron bernard cathala Olivier Chauvet Jean Rouxel Institute of Materials(IMN) University of NantesCNRS2 rue de la Houssinière BP3222944322 Nantes cedex 3France BIA INRA44300 NantesFrance

Cellulose nanocrystals(CNCs)have a high ability to disperse single-walled carbon nanotubes(SWNTs)in aqueous media and to form *** hybrids are used to grow layer-by-layer thin films of controlled *** to the presence of SWNTs,these films are *** this article,we describe the process by which the CNC/SWNT hybrids are obtained and discuss the electrical properties of the hybrid-based layer-by-layer films.

关键词： Nanocellulose nanotube LbL thin films hybrids

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