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Biodegradable Composites Based on Poly(3-hydroxybutyrate) and Polylactide Polyesters Produced from Vegetable Raw Materials
Polymer Science, Series A ( IF 1 ) Pub Date : 2020-08-03 , DOI: 10.1134/s0965545x20040136
L. A. Zhorina , S. Z. Rogovina , E. V. Prut , O. P. Kuznetsova , A. V. Grachev , N. N. Ivanushkina , A. L. Iordanskii , A. A. Berlin

Abstract

Composites of various composition are obtained by the solid-phase mixing of thermoplastic polyesters poly(3-hydroxybutyrate) and polylactide under conditions of shear deformation in the presence of poly(ethylene glycol) as a plasticizer. The thermophysical parameters in primary and secondary heating scans are measured. It is shown that the original polyesters are immiscible polymers. The degree of crystallinity and the enthalpy of melting of the polymers in the individual state and in blends are calculated. It is found that upon secondary heating the temperature transitions and the degree of crystallinity of these polymers change. The mechanical and rheological properties of the composites are investigated. A study of mold fungi resistance demonstrates that, unlike polylactide, poly(3-hydroxybutyrate) is a completely biodegradable polymer, while the biodegradability of the composites is determined by their composition.



中文翻译:

基于蔬菜原料的聚(3-羟基丁酸酯)和聚丙交酯聚酯的可生物降解复合材料

摘要

在热塑性聚苯乙烯(乙二醇)存在下,在剪切变形的条件下,通过热塑性聚酯聚(3-羟基丁酸酯)和聚丙交酯的固相混合,可以获得各种组成的复合材料。测量一次和二次加热扫描中的热物理参数。结果表明,原始聚酯是不混溶的聚合物。计算了单独状态和共混状态下聚合物的结晶度和熔融焓。发现在二次加热时,这些聚合物的温度转变和结晶度改变。研究了复合材料的机械和流变性能。对霉菌抗性的研究表明,与聚丙交酯不同,聚(3-羟基丁酸酯)是一种完全可生物降解的聚合物,

更新日期:2020-08-03
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