Structures and mechanical properties of electrospun cellulose nanofibers/poly(ε-caprolactone) composites

被引:9
|
作者
Taniguchi, Hotaka [1 ]
Kurokawa, Naruki [1 ]
Inukai, Shunya [1 ]
Hotta, Atsushi [1 ]
机构
[1] Keio Univ, Dept Mech Engn, Yokohama, Kanagawa 2238522, Japan
基金
日本学术振兴会;
关键词
cellulose and other wood products; composites; fibers; mechanical properties; surfaces and interfaces; NANOFIBERS; ACETATE; SAPONIFICATION; REINFORCEMENT;
D O I
10.1002/app.49307
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Poly(epsilon-caprolactone) (PCL) is one of the ecofriendly biodegradable polymers with excellent moldability but with rather low mechanical properties especially for the industrial and biomedical use. In this research, to overcome the problem, the two types of cellulose nanofibers, the cellulose acetate nanofibers (CA-NF) and the cellulose nanofibers (C-NF), were composited into PCL for the enhancement of the mechanical properties of PCL. CA-NF were prepared by electrospinning and converted into C-NF afterward by deacetylation. It was found that the Young's modulus of the CA-NF/PCL composite at the fiber concentration of 35 wt% significantly increased by 3 times as compared with that of neat PCL, whereas C-NF/PCL of the same fiber concentration also increased by 4.5 times. It was also found that the Young's moduli of CA-NF/PCL nearly reached the theoretical values calculated by the equation suggested by Tsai, but that the Young's moduli of C-NF/PCL could not reach the theoretical values. It indicates that CA-NF possessed better compatibility with PCL than C-NF, agreeing well with the fracture-surface analyses of the two composites by the scanning electron microscopy.
引用
收藏
页数:9
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