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01.03.2015 | Original Paper

Vertically aligned multi-layered structures to enhance mechanical properties of chitosan–carbon nanotube films

verfasst von: Minju Oh, Fangfang Sun, Hee-Ryung Cha, Jieun Park, Junggoo Lee, Moojin Kim, Kyoung-Bo Kim, Soo Hyung Kim, Jaebeom Lee, Dongyun Lee

Erschienen in: Journal of Materials Science | Ausgabe 6/2015

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Abstract

Pure chitosan and carbon nanotube (CNT)/chitosan nanocomposite films were fabricated via a sublimation-drying process at −196 °C, during which polymeric repulsion generates unique pores with multi-layered structures. The films were then transformed into multi-layered and vertically aligned multi-layered (VAM) structures by compression. Due to the cross-linking between layers, the films prepared at −196 °C showed significantly better mechanical properties than the films prepared at −78 and −20 °C. Furthermore, a peculiar phenomenon was observed in that pure chitosan which exhibited better mechanical properties than the nanocomposites. To explain these results, we suggest a model in which the VAM structure supports more load than the CNT fillers.

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Titel: Vertically aligned multi-layered structures to enhance mechanical properties of chitosan–carbon nanotube films
verfasst von: Minju Oh
Fangfang Sun
Hee-Ryung Cha
Jieun Park
Junggoo Lee
Moojin Kim
Kyoung-Bo Kim
Soo Hyung Kim
Jaebeom Lee
Dongyun Lee
Publikationsdatum: 01.03.2015
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 6/2015
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-015-8826-2

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