Paper Title:
Preparation of Biodegradable Gradient Polymer by Microwave
  Abstract

A biodegradable gradient polymeric membrane based on chitosan (CS) and polyvinyl alcohol (PVA) has been prepared by microwave technique. The composition and morphology variation along the thickness direction in membrane were measured by elemental analysis and scanning electron microscope (SEM). The tensile properties of CS/PVA gradient membrane were tested. Results showed that the content of either polymer shows a gradient variation along the thickness direction. SEM photographs exhibit that morphology also evolves gradually with the varying percentage ratio of two polymers. As a result of such variations in composition and structure, the mechanical properties on both sides exhibit a significant difference. Compared with conventional isotropic membrane, gradient membrane has improved mechanical properties.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
1949-1953
DOI
10.4028/www.scientific.net/AMR.236-238.1949
Citation
J. Y. Liu, X. Q. Liu, "Preparation of Biodegradable Gradient Polymer by Microwave", Advanced Materials Research, Vols. 236-238, pp. 1949-1953, 2011
Online since
May 2011
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Price
$32.00
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