Melt Blending In situ Enhances the Interaction between Polystyrene and Graphene through π-π Stacking
Melt Blending In situ Enhances the Interaction between Polystyrene and Graphene through π-π Stacking
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DOI：
10.1021/am200612z
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发表时间：
2011-08-01
影响因子：
9.5
通讯作者：
Zheng, Wenge
中科院分区：
文献类型：
--
作者：
Shen, Bin;Zhai, Wentao;Zheng, Wenge
研究了熔融共混对石墨烯与聚苯乙烯基体相互作用的影响。通过熔融共混，石墨烯和PS之间的相互作用得到了显著增强，PS功能化的石墨烯（PSFG）在某些溶剂中表现出良好的溶解性。PSFG上的PS链可以有效地阻止石墨烯片的团聚，制备的PS/PSFG复合材料分散均匀，电性能得到改善。熔融共混对这种相互作用增强的机理归因于熔融共混过程中π-π堆积的形成。此外，熔融共混过程中化学键合的形成也可能增强了相互作用。
The effect of melt blending on the interaction between graphene and polystyrene (PS) matrix has been investigated in this paper. The interaction between graphene and PS was significantly enhanced by melt blending, which led to an increased amount of PS-functional graphene (PSFG) exhibiting good solubility in some solvents. The PS chains on PSFG could effectively prevent the graphene sheets from aggregating and the prepared PS/PSFG composites exhibited a homogeneous dispersion and an improved electrical property. The mechanism of melt blending on this enhanced interaction was attributed to the formation pi-pi stacking during the melt blending. Moreover, the formation of chemical bonding during melt blending may have also enhanced the interaction.