Polymer-Plastics Technology and Materials ( IF 2.7 ) Pub Date : 2020-12-21 , DOI: 10.1080/25740881.2020.1858099 Jianxiang Xiong 1 , Jiamei Huang 1 , Wentao Wang 1 , Wenjie Mou 1, 2 , Yukun Chen 1
ABSTRACT
Here, poly(lactic acid) (PLA)/poly(methyl methacrylate)-grafted natural rubber (NR-PMMA)/natural rubber (NR) ternary blends with co-continuous phase structure were prepared via peroxide-induced dynamic vulcanization. The good compatibility between NR-PMMA with PLA and NR and the interfacial grafting reaction during the preparation process ameliorated the interfacial compatibility between the phases. Therefore, the energy stored in the rubber phases could be effectively transferred to PLA, thus achieving an excellent shape-memory effect even under-repeated shape-memory cycles. Furthermore, by adding 10 wt% NR-PMMA, the TPVs exhibited improved impact strength and tensile strength up to 98.05 kJ/m2 and 45.2 MPa, respectively.
中文翻译:
三元聚乳酸/聚甲基丙烯酸甲酯接枝天然橡胶/天然橡胶热塑性硫化橡胶的形状记忆行为研究
摘要
在此,通过过氧化物诱导的动态硫化制备具有共连续相结构的聚乳酸(PLA)/聚甲基丙烯酸甲酯接枝的天然橡胶(NR-PMMA)/天然橡胶(NR)三元共混物。NR-PMMA与PLA和NR之间的良好相容性以及制备过程中的界面接枝反应改善了各相之间的界面相容性。因此,橡胶相中存储的能量可以有效地转移到PLA上,从而即使在重复进行的形状记忆循环不足的情况下也可以实现出色的形状记忆效果。此外,通过添加10 wt%的NR-PMMA,TPV分别显示出高达98.05 kJ / m 2和45.2 MPa的改进的冲击强度和拉伸强度。