摘要
石墨烯作为一种新型的二维碳纳米材料,引起了科学家们极大的兴趣。其中石墨烯/聚合物复合材料具有优异的导电性能,广泛应用于电子、电气等领域。石墨烯片层易于团聚,在聚合物基体中分散不均匀,严重影响了石墨烯/聚合物复合材料的导电性能,需要对石墨烯及其衍生物进行表面改性。表面改性能有效地提高石墨烯在聚合物基体中的分散性,改善石墨烯与聚合物基体的相容性。文中介绍了石墨烯的共价改性(亲核取代反应、亲电取代反应、缩聚反应)和非共价改性(表面活性剂吸附、杂化修饰)的方法,以及对石墨烯/聚合物复合材料导电性的影响,总结了2种改性法的优缺点,最后展望了石墨烯改性及其在聚合物导电复合材料应用方面的研究方向。
Graphene is a novel two-carbon nano-material and has attracted great academic interests. The graphene/ polymer composites have excellent electrical properties and widely used in electronics, electrical fields. However, graphene sheets are easy to agglomerate, and it has poor dispersity in the polymer matrix. This seriously affects the performance of the graphene /polymer composites, so surface modification is needed for graphene and its derivatives to increase the dispersion in the polymer matrix, and improve the compatibility with the polymer matrix. The paper mainly introduced the influence of covalent modification （nucleophilic substitution, electrophilie substitution reactions, condensation reactions ） and non=covalent modification （adsorption of surfactant, hybridization modification） on the electrical properties of graphene/polymer composites, and the advantage and disadvantage of two modification were also illustrated. Future research and potential application of graphene/polymer composites were also prospected.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2017年第8期184-190,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(31270610
51503061)
湖北省科技支撑计划(2015BAA094)
湖北省自然科学基金青年基金资助项目(2015CFB322)
关键词
聚合物
石墨烯
复合材料
导电性
表面改性
polymer
graphene
composites
electrical conductivity
surface modification
