Effect of the Molecular Chains Grafted on Graphene Nanosheets on the Properties of Poly(L-lactic acid) Nanocomposites
Effect of the Molecular Chains Grafted on Graphene Nanosheets on the Properties of Poly(L-lactic acid) Nanocomposites
复制标题
石墨烯纳米片接枝分子链对聚L-乳酸纳米复合材料性能的影响
DOI：
10.1002/pc.23553
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发表时间：
2017-01-01
影响因子：
5.2
通讯作者：
Xu, Zhiwei
中科院分区：
文献类型：
--
作者：
Chen, Lei;Li, Xianhua;Xu, Zhiwei
采用c-射线辐照接枝聚合法制备了热还原氧化石墨烯（TRG）接枝聚甲基丙烯酸甲酯（PMMA）和聚醋酸乙烯酯（PVAc）（TRG-g-PMMA和TRG-gPVAc），并研究了它们对聚乳酸（PLLA）纳米复合材料的影响。PMMA和PVAc链被成功地接枝到TRG表面。与TRG相比，TRG-g-PMMA和TRG-g-PVAc抑制了PLLA的结晶行为。此外，拉伸测试结果表明，与TRG相比，TRG-g-PMMA和TRG-g-PVAc可以提高PLLA纳米复合材料的断裂伸长率，而不会降低拉伸强度和模量，这表明TRG上接枝PMMA和PVAc链可以提高PLLA纳米复合材料的韧性。Polym.比较器：38：5-12，2017. (C)2015年塑料工程师学会
We prepared thermally reduced graphene oxide (TRG) grafted with polymethyl methacrylate (PMMA) and polyvinyl acetate (PVAc) (TRG-g-PMMA and TRG-gPVAc) by c-ray irradiation-induced graft polymerization and studied their effects on poly(L-lactic acid) (PLLA) nanocomposites. PMMA and PVAc chains were proved to be grafted on the TRG surface successfully. TRG-gPMMA and TRG-g-PVAc was found to restrict the crystallization behavior of PLLA compared with TRG. Moreover, tensile-test results showed that TRG-g-PMMA and TRG-g-PVAc could enhance the elongation at break of PLLA nanocomposites without reducing the tensile strength and modulus compared with TRG, which indicated that the grafting of PMMA and PVAc chains on TRG could improve the toughness of PLLA nanocomposites. POLYM. COMPOS., 38: 5-12, 2017. (C) 2015 Society of Plastics Engineers