Mechanical Properties and Morphology of Poly(l-Lactic acid)/Nano-CaCO3 Composites

被引：0
|
作者：
J. Z. Liang
D. R. Duan
C. Y. Tang
C. P. Tsui
D. Z. Chen
S. D. Zhang
机构：
[1] South China University of Technology,Research Division of Green Function Materials and Equipment, School of Mechanical and Automotive Engineering
[2] The Hong Kong Polytechnic University,Department of Industrial and Systems Engineering
[3] Shenzhen University,Department of Polymer Materials and Engineering
来源：
Journal of Polymers and the Environment | 2015年 / 23卷
关键词：
Biopolymer; Polymer-matrix composites; Particle-reinforcement; Mechanical properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The tensile and impact properties of poly(l-lactic acid) composites filled with nanometer calcium carbonate (nano-CaCO3) were measured at room temperature. The results showed that the tensile elastic modulus increased roughly linearly while the tensile yield strength, tensile fracture strength and tensile elongation at break (δb) decreased nonlinearly with increasing the nano-CaCO3 weight fraction (Wf); when Wf was constant, the δb increased with increasing tensile rates. Both the V-notched Izod impact strength and V-notched Charpy impact strength showed the non-linear increase with increasing Wf. The impact fracture surface was observed by means of a scanning electronic microscope to understand the toughening mechanisms.
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页码：21 / 29
页数：8
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