The Microstructure of GNR and the Mechanical Properties of Biobased PLA/GNR Thermoplastic Vulcanizates with Excellent Toughness
The Microstructure of GNR and the Mechanical Properties of Biobased PLA/GNR Thermoplastic Vulcanizates with Excellent Toughness
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GNR 的微观结构和具有优异韧性的生物基 PLA/GNR 热塑性硫化胶的力学性能
DOI：
10.3390/ma12020294
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发表时间：
2019-01
期刊：
影响因子：
3.4
通讯作者：
Wang Qingguo
中科院分区：
文献类型：
--
作者：
Xia Mingfeng;Lang Wenchao;Yang Yue;Yu Jihang;Wu Ningjing;Wang Qingguo
通过绿色本体熔融接枝反应制备了一系列不同含量的甲基丙烯酸缩水甘油酯(GMA)接枝天然橡胶(GNR)共聚物，并通过原位动态硫化制备了超韧的生物基聚乳酸(PLA)/GNR热塑性硫化胶(TPVs)。提高GNR硫化胶的接枝率、凝胶分数和交联度，有效地改善了共混物的韧性，延长了动态硫化时间，增加了GMA的接枝率，显著提高了共混物的冲击韧性。结果表明，聚乳酸/30wt%GNR热塑性弹性体的延伸率和缺口冲击强度分别为410%和73.2kJ/m2，分别是聚乳酸/30wt%天然橡胶热塑性弹性体的40和15倍。新型生物基聚乳酸/GNR热塑性弹性体有望在汽车、3D打印和包装领域取代石油聚合物。
A series of different contents of glycidyl methacrylate (GMA)-grafted natural rubber (GNR) copolymers were fabricated via green bulk melt-grafting reactions, and super-tough bio-based poly (lactic acid) (PLA)/GNR thermoplastic vulcanizates (TPVs) were achieved by in-situ dynamic vulcanization. Increasing the graft yield, gel fraction, and crosslinking density of GNR vulcanizates effectively improved the ductility of the PLA/GNR TPVs, while prolonging the dynamic vulcanization time and increasing the GMA graft yield led to a notable enhancement in the impact toughness of the PLA/GNR TPVs. PLA/30 wt % GNR TPVs exhibited a significantly increased elongation (410%) and notched impact strength (73.2 kJ/m2), which were 40 and 15 times higher than those of the PLA/30 wt % NR TPVs, respectively. The new bio-based PLA/GNR TPVs offer promise as replacements for petroleum-based polymers in the automotive, 3D printing, and packaging fields.
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影响因子：
8.4
作者：
Wu, Ningjing;Zhang, Hong;Fu, Guoliang
通讯作者：
Fu, Guoliang
影响因子：
9.5
作者：
Ojijo, Vincent;Ray, Suprakas Sinha;Sadiku, Rotimi
通讯作者：
Sadiku, Rotimi
DOI：
10.1016/b978-0-12-803581-8.11555-3
发表时间：
2020
期刊：
Encyclopedia of Renewable and Sustainable Materials
影响因子：
--
作者：
M. H. Othman
通讯作者：
M. H. Othman
影响因子：
6.2
作者：
Jiang, L;Wolcott, MP;Zhang, JW
通讯作者：
Zhang, JW
影响因子：
4.6
作者：
Li, Yongjin;Shimizu, Hiroshi
通讯作者：
Shimizu, Hiroshi