The tensile and tear properties of a biodegradable polyester film

Publication Type:
Journal Article
International Journal of Polymer Analysis and Characterization, 2008, 13 (3), pp. 190 - 199
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The tensile and tear properties of a biodegradable polymer, Biomax®, have been studied in order to assess this material in film applications. While the tensile strength of Biomax® was comparable to that of low-density polyethylene, the tear strength was found to be six times lower. A study of the load-displacement curves revealed a regular variation in load throughout the test, which was attributed to the presence of lower and higher strength regions in the polymer. The higher strength regions were characterized by the presence of polymer chains oriented parallel to the tear surface, while the lower strength regions were defined by an absence of molecular orientation and the presence of voids. Copyright © Taylor & Francis Group, LLC.
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