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Chitin nanocrystals and nanofibers as nano-sized fillers into thermoplastic starch-based biocomposites processed by melt-mixing

Abstract : Chitin nano-size fillers, i.e. nanocrystals (CHNC) and nanofibers (CHNF), were incorporated in thermoplastic starch matrix via melt-mixing. The two types of thermoplastic starch-based nano-biocomposites (S/CHNC and S/CHNF) were characterized and compared in terms of morphology, chemical and crystal structure, thermal and mechanical properties, and water resistance. In general, all thermoplastic starch-based nano-biocomposites showed better thermal stability, mechanical properties, and storage modulus than thermoplastic starch matrix without chitin nano-size fillers. This can be linked to the good dispersion of the nano-size fillers in the matrix, resulting from their chemical similarity, and also to the strong nano-size fillers-matrix adhesion by hydrogen bonding interactions. The results showed that the final properties of the nano-biocomposites were dependent of the concentration and type of chitin nano-size filler introduced in the thermoplastic starch matrix. In general, the thermoplastic starch-based nano-biocomposites prepared with chitin nanofibers showed better thermal and mechanical properties and storage modulus than those prepared with chitin nanocrystals. © 2014 Elsevier B.V.
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https://hal.archives-ouvertes.fr/hal-01559951
Contributor : Susana de Matos Fernandes Connect in order to contact the contributor
Submitted on : Tuesday, July 11, 2017 - 10:02:20 AM
Last modification on : Thursday, June 2, 2022 - 4:12:05 PM

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A.M. Salaberria, J. Labidi, Susana C.M. Fernandes. Chitin nanocrystals and nanofibers as nano-sized fillers into thermoplastic starch-based biocomposites processed by melt-mixing. Chemical Engineering Journal, Elsevier, 2014, 256, pp.356-364. ⟨10.1016/j.cej.2014.07.009⟩. ⟨hal-01559951⟩

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