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Oxidized starch films reinforced with natural halloysite

Published online by Cambridge University Press:  25 November 2011

Weina Kong ,
Wenchao Wang ,
Jianping Gao ,
Tianlin Liu  and
Yu Liu
Weina Kong
Affiliation:
Department of Science, Tianjin University, Tianjin 300072, People’s Republic of China
Wenchao Wang
Affiliation:
Department of Science, Tianjin University, Tianjin 300072, People’s Republic of China
Jianping Gao*
Affiliation:
Department of Science, Tianjin University, Tianjin 300072, People’s Republic of China
Tianlin Liu
Affiliation:
Department of Science, Tianjin University, Tianjin 300072, People’s Republic of China
Yu Liu*
Affiliation:
Department of Science, Tianjin University, Tianjin 300072, People’s Republic of China
*
a)Address all correspondence to these authors. e-mail: gaojianping004@yahoo.cn
b)e-mail: tjly@tju.edu.cn
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Abstract

Oxidized starch (OSt) films reinforced with natural halloysite were prepared by adding modified natural halloysite nanotubes into an OSt matrix. The halloysite/OSt films were characterized by x-ray diffraction, scanning electron microscopy, and ultraviolet spectrometry. The mechanical properties and moisture absorbability of the films were also studied. The modified halloysite nanotubes were well distributed in the starch matrix, and the tensile strength (TS) of the films was greatly enhanced, but the moisture adsorption ability of the films only changed slightly. The flexibility of the films was improved by adding glycerol but at a cost of reducing the TS. Incorporating a small amount of poly(vinyl alcohol) (PVA) improved both the TS and the percent elongation at break of the halloysite/OSt films.

Keywords

CompositeFilmPolymer
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 23 , 14 December 2011 , pp. 2938 - 2944
Copyright
Copyright © Materials Research Society 2011

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