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Published in: Cellulose 4/2014

01-08-2014 | Original Paper

Poly(ε-caprolactone) (PCL)/cellulose nano-crystal (CNC) nanocomposites and foams

Authors: Hao-Yang Mi, Xin Jing, Jun Peng, Max R. Salick, Xiang-Fang Peng, Lih-Sheng Turng

Published in: Cellulose | Issue 4/2014

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Abstract

Poly(ε-caprolactone) (PCL)/cellulose nanocrystal (CNC) nanocomposites were produced via twin-screw extrusion. Microcellular nanocomposite samples were produced with microcellular injection molding using carbon dioxide (CO2) as physical blowing agent. The foaming behavior, physical properties, thermal properties, crystallization behavior, and biocompatibility were investigated. It was found that the CNCs interacted with the PCL matrix which led to a strong interface. The CNCs effectively acted as nucleation agents in microcellular injection molding. Both solid and foamed samples with higher levels of CNC content showed higher tensile moduli, complex viscosities, and storage moduli due to the reinforcement effects of CNCs. Furthermore, improvement in the foamed samples was more significant due to their fine cell structure. The addition of CNCs caused a reduction of the decomposition temperature and an increase in the glass transition temperature, crystallization temperature, and crystallinity of PCL. Moreover, the biocompatibility of the foamed nanocomposites with low CNC content was verified by 3T3 fibroblast cell culture.

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Metadata
Title
Poly(ε-caprolactone) (PCL)/cellulose nano-crystal (CNC) nanocomposites and foams
Authors
Hao-Yang Mi
Xin Jing
Jun Peng
Max R. Salick
Xiang-Fang Peng
Lih-Sheng Turng
Publication date
01-08-2014
Publisher
Springer Netherlands
Published in
Cellulose / Issue 4/2014
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-014-0327-y

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