Polypropylene/Graphene Oxide Nanocomposites Prepared by In Situ Ziegler-Natta Polymerization
Polypropylene/Graphene Oxide Nanocomposites Prepared by In Situ Ziegler-Natta Polymerization
复制标题
原位齐格勒-纳塔聚合制备聚丙烯/氧化石墨烯纳米复合材料
DOI：
10.1021/cm100998e
复制
发表时间：
2010-07-13
影响因子：
8.6
通讯作者：
Dong, Jin-Yong
中科院分区：
文献类型：
--
作者：
Huang, Yingjuan;Qin, Yawei;Dong, Jin-Yong
本文报道了通过原位齐格勒-纳塔聚合制备聚丙烯/氧化石墨烯（PP/GO）纳米复合材料的第一个实例。Mg/Ti催化剂物种通过包括-OH和-COOH的表面官能团并入GO中，得到主要由纳米级主要是单个GO片结构的负载型催化剂体系。随后的丙烯聚合导致PP基体的原位形成，这伴随着纳米级的GO剥离，以及其逐渐分散。通过TEM和SEM技术对最终的PP/GO纳米复合材料的形态学检查显示，GO在PP基体中以纳米级有效分散。发现由此制备的PP/GO纳米复合材料具有高电导率;例如，在4.9重量%的GO负载下，测得σ（c）为0.3 S.m（-1）。
This paper reports the first example of preparation of polypropylene/graphene oxide (PP/GO) nanocomposites via in situ Ziegler-Natta polymerization. A Mg/Ti catalyst species was incorporated into GO via surface functional groups including -OH and -COOH, giving a supported catalyst system primarily structured by nanoscale, predominantly single GO sheet. Subsequent propylene polymerization led to the in situ formation of PP matrix, which was accompanied by the nanoscale exfoliation of GO, as well as its gradual dispersion. Morphological examination of the ultimate PP/GO nanocomposites by TEM and SEM techniques revealed effective dispersion in nanoscale of GO in PP matrix. High electrical conductivity was discovered with thus prepared PP/GO nanocomposites; for example, at a GO loading of 4.9 wt %, sigma(c) was measured at 0.3 S.m(-1).