Mechanical Properties of Composites Based on Polylactide and Poly-3-Hydroxybutyrate with Rubbers

被引：4
|
作者：
Tertyshnaya, Yu, V [1 ,2 ]
Khvatov, A., V [1 ]
Popov, A. A. [1 ,2 ]
机构：
[1] Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow, Russia
[2] Plekhanov Russian Univ Econ, Moscow, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B | 2022年 / 16卷 / 01期
关键词：
polylactide; poly-3-hydroxybutyrate; elongation at break; tensile strength; rubber; MORPHOLOGY; PLA/NR; FIBERS;
D O I：
10.1134/S1990793122010304
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The influence of elastomers-natural rubber (NR) and synthetic ethylene-propylene rubber (EPR)-on the morphology and physical and mechanical characteristics of composite materials based on polylactide (PLA) and poly-3-hydroxybutyrate (PHB), respectively, is studied. Differential scanning calorimetry shows differences in the patterns of changes in the thermophysical characteristics of the PLA-NR (with a rubber content of 5 to 15 wt %)-and PHB-synthetic EPR (10-30 wt %)-compositions. The melting point and the degree of crystallinity increase in the case of PLA and decrease in the experiment with PHB. The mechanical characteristics of the investigated compositions have similar dependences: with an increase in the content of rubbers, the relative elongation increases and the tensile strength and elastic modulus decrease.
引用
收藏
页码：162 / 166
页数：5
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