Degradation of Polylactic Acid Polymer and Biocomposites Exposed to Controlled Climatic Ageing: Mechanical and Thermal Properties and Structure

被引:7
|
作者
Vasicek, Adam [1 ]
Lenfeld, Petr [1 ]
Behalek, Lubos [1 ]
机构
[1] Tech Univ Liberec, Fac Mech Engn, Studentska 1402-2, Liberec 46117, Czech Republic
关键词
polylactic acid; biocomposite; buckwheat husks; egg shells; degradation; controlled climate ageing; POLY(LACTIC ACID); FILLER;
D O I
10.3390/polym15142977
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
This paper deals with the study of the degradation of polylactic acid (PLA) material structures and biocomposite systems with a PLA matrix containing ground natural particulate waste fillers, buckwheat husks and egg shells. Waste fillers were used without difficult cleaning operations to describe the effect of the raw waste material on PLA. Biocomposites with raw waste materials are increasingly coming to the forefront in car interiors and packaging products. The prepared material systems were exposed to controlled climatic ageing simulating long-term solar radiation and cyclic outdoor conditions. The degradation of the biocomposite systems was evaluated via thermal (differential scanning calorimetry) and mechanical properties (tensile and flexural tests, Charpy impact toughness). In addition to evaluating the degradation of the material structures using standardized tests, the influence and effect of controlled climatic ageing was visually assessed using SEM images (electron microscopy) of the surfaces and fracture surfaces of the test specimens.
引用
收藏
页数:12
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