Enhanced mechanical and gas barrier properties of rubber nanocomposites with surface functionalized graphene oxide at low content
Enhanced mechanical and gas barrier properties of rubber nanocomposites with surface functionalized graphene oxide at low content
复制标题
低含量表面功能化氧化石墨烯增强橡胶纳米复合材料的机械和气体阻隔性能
DOI：
10.1016/j.polymer.2013.01.049
复制
发表时间：
2013-03-22
期刊：
影响因子：
4.6
通讯作者：
Zheng, Jing
中科院分区：
文献类型：
--
作者：
Wu, Jinrong;Huang, Guangsu;Zheng, Jing
在目前的工作中，我们报告的第一次使用的表面功能化的氧化石墨烯（SGO）与双（三乙氧基甲硅烷基丙基）四硫化物（BTESPT）作为天然橡胶（NR）的多功能纳米填料。通过一种简单的方法，BTESPT分子成功地接枝到氧化石墨烯表面上。所得SGO可以通过溶液混合精细分散在NR中。结果发现，SGO是显着改善NR的机械性能和气体阻隔性能在显着低填充量。SGO在纳米复合材料中的逾渗点发生在小于0.1重量%的含量下。掺入低至0.3wt%的SGO时，在不牺牲极限应变的情况下实现了拉伸强度增加100%、拉伸模量改善66%和透气性降低48%。NR纳米复合材料在如此低的填料负载量下的机械和气体阻隔性能的这种显着改善归因于强的界面相互作用和SGO在NR基体中的分子水平分散。(c)2013爱思唯尔有限公司保留所有权利。
In the present work, we report for the first time the use of surface functionalized graphene oxide (SGO) with bis(triethoxysilylpropyl)tetrasulfide (BTESPT) as a multi-functional nanofiller for natural rubber (NR). Through a facile approach BTESPT molecules are successfully grafted onto the surface of graphene oxide. The resulting SGO can be finely dispersed in NR via solution mixing. It is found that SGO is prominent in improving the mechanical and gas barrier properties of NR at significantly low filler loading. The percolation point of SGO in the nanocomposites takes place at a content of less than 0.1 wt%. With incorporation of as low as 0.3 wt% of SGO, a 100% increase in the tensile strength, a 66% improvement in the tensile modulus and a 48% reduction in the air permeability are achieved without sacrificing the ultimate strain. This remarkable improvement in the mechanical and gas barrier properties of NR nanocomposites at such low filler loading is attributed to the strong interfacial interaction and the molecular-level dispersion of SGO in the NR matrix. (c) 2013 Elsevier Ltd. All rights reserved.