Mechanical Properties of Poly(L-lactic acid) Composites Filled With Mesoporous Silica

被引:9
作者
Liang, Ji-Zhao [1 ]
Li, Feng-Jiao [1 ]
机构
[1] South China Univ Technol, Sch Mech & Automot Engn, Res Div Green Funct Mat & Equipment, Guangzhou 510640, Guangdong, Peoples R China
关键词
POLY(LACTIC ACID); POLYMER COMPOSITES; POLYLACTIDE PLA; L-LACTIDE; BLENDS; GLYCOL; (CO)POLYMERS;
D O I
10.1002/pc.23674
中图分类号
TB33 [复合材料];
学科分类号
摘要
The mechanical properties of mesoporous silica (MCM-41) filled poly(L-lactic acid) (PLA4032D) composites and PLA4032D/poly(ethylene glycol) (PEG) composites were investigated. It was found that the Young's modulus increased while tensile strength decreased with increasing the filler content; the V-notched impact fracture strengths of both Izod and Charpy for the PLA4032D/PEG/MCM-41 composites increased while they decreased slightly for the PLA4032D/MCM-41 composites, the unnotched Charpy impact strength of both the two composites decreased with increasing the filler loading; the flexural modulus increased slightly while the flexural strength decreased slightly with increasing the filler content. The toughening mechanisms of the composites were discussed by means of observing the impact fracture surface with a scanning electronic microscope, and the synergistic effect between the PEG and MCM-41 should be one of the major toughening mechanisms. (C) 2015 Society of Plastics Engineers
引用
收藏
页码:1118 / 1126
页数:9
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