College of Chemistry, Chemical Engineering and Materials Sciences, Soochow University, Suzhou 215123, China.
ACS Appl Mater Interfaces. 2010 Jun;2(6):1707-13. doi: 10.1021/am100222m.
Nanocomposites of chitosan and graphene oxide are prepared by simple self-assembly of both components in aqueous media. It is observed that graphene oxide is dispersed on a molecular scale in the chitosan matrix and some interactions occur between chitosan matrix and graphene oxide sheets. These are responsible for efficient load transfer between the nanofiller graphene and chitosan matrix. Compared with the pure chitosan, the tensile strength, and Young's modulus of the graphene-based materials are significantly improved by about 122 and 64%, respectively, with incorporation of 1 wt % graphene oxide. At the same time, the elongation at the break point increases remarkably. The experimental results indicate that graphene oxide sheets prefer to disperse well within the nanocomposites.
壳聚糖和氧化石墨烯的纳米复合材料通过两种组分在水介质中的简单自组装制备。观察到氧化石墨烯在壳聚糖基质中以分子尺度分散，并且壳聚糖基质和氧化石墨烯片之间发生一些相互作用。这些相互作用负责在纳米填料石墨烯和壳聚糖基质之间进行有效的载荷传递。与纯壳聚糖相比，在掺入 1wt%氧化石墨烯时，基于石墨烯的材料的拉伸强度和杨氏模量分别显著提高了约 122%和 64%。同时，断裂点的伸长率显著增加。实验结果表明，氧化石墨烯片在纳米复合材料中更倾向于良好分散。
