Li Chaoqun, Wang Jiang, Chen Xin, Song Yingze, Jiang Kangjia, Fan Hongbo, Tang Min, Zhan Weitao, Liao Shuangquan
J Nanosci Nanotechnol. 2017 Feb;17(2):1133-139. doi: 10.1166/jnn.2017.12624.
In this work, the morphology and properties of graphene modified natural rubber (NR) was studied. Graphite oxide was chemically reduced with poly(sodium 4-styrenesulfonate) as a stabilizer, then the obtained graphene was blended with NR using latex technique. It is observed that a stable graphene suspension was fabricated by chemical reduction of graphite oxide in the presence of surfactant, while graphene was dispersed homogeneous in NR matrix as tested by WAXD and TEM. Dynamic mechanical analysis showed that storage modulus enhanced dramatically after the incorporation of graphene due to the high surface area of graphene and the exfoliated structure of graphene in NR. The electrical property and thermal conductive properties of NR/graphene nanocomposites improved significantly following the increase in graphene concentration.
在本工作中，研究了石墨烯改性天然橡胶（NR）的形态和性能。以聚（4-苯乙烯磺酸钠）为稳定剂对氧化石墨烯进行化学还原，然后采用乳液技术将所得石墨烯与天然橡胶共混。观察到在表面活性剂存在下通过氧化石墨烯的化学还原制备了稳定的石墨烯悬浮液，而通过广角X射线衍射（WAXD）和透射电子显微镜（TEM）测试表明石墨烯均匀分散在天然橡胶基体中。动态力学分析表明，由于石墨烯的高比表面积以及其在天然橡胶中的剥离结构，加入石墨烯后储能模量显著提高。随着石墨烯浓度的增加，天然橡胶/石墨烯纳米复合材料的电学性能和导热性能显著改善。
