Shelenkov Pavel G, Pantyukhov Petr V, Poletto Matheus, Popov Anatoly A
Russian Academy of Sciences, Emanuel Institute of Biochemical Physics, Moscow 119334, Russia.
Scientific laboratory "Advanced Composite Materials and Technologies", Plekhanov Russian University of Economics, Moscow 117997, Russia.
Polymers (Basel). 2023 Jun 10;15(12):2639. doi: 10.3390/polym15122639.
Highly filled biocomposites may be used as biodegradable masterbatches that manufacturers add to traditional polymers for making plastic goods more biodegradable. Biocomposites based on various trademarks of ethylene-vinyl acetate copolymer (EVA) and natural vegetable fillers (wood flour and microcrystalline cellulose) were studied. The EVA trademarks differed both in terms of the melt flow index and in the content of vinyl acetate groups. The composites were created as superconcentrates (or masterbatches) for the production of biodegradable materials based on vegetable fillers with polyolefin matrices. The filler content in biocomposites was 50, 60, 70 wt.%. The influence of the content of vinyl acetate in the copolymer and its melt flow index on the physico-mechanical and rheological properties of highly filled biocomposites was evaluated. As a result, one EVA trademark with high molecular weight that has a high content of VA was chosen because of its optimal parameters for creating highly filled composites with natural fillers.
高填充生物复合材料可用作可生物降解的母料，制造商将其添加到传统聚合物中，以使塑料制品更具生物降解性。研究了基于各种商标的乙烯 - 醋酸乙烯酯共聚物（EVA）和天然植物填料（木粉和微晶纤维素）的生物复合材料。EVA商标在熔体流动指数和醋酸乙烯酯基团含量方面均有所不同。这些复合材料被制成用于生产基于植物填料与聚烯烃基体的可生物降解材料的超浓缩物（或母料）。生物复合材料中的填料含量为50、60、70重量％。评估了共聚物中醋酸乙烯酯含量及其熔体流动指数对高填充生物复合材料物理力学和流变性能的影响。结果，选择了一种具有高分子量且VA含量高的EVA商标，因为其具有用于制备含天然填料的高填充复合材料的最佳参数。
