原子转移自由基聚合反应改性氧化石墨烯研究进展

Advances in the Modification of Graphene Oxide by Atom Transfer Radical Polymerization

原子转移自由基聚合(ATRP)是一种具有潜在应用价值的可控活性自由基聚合方法,通过ATRP反应对氧化石墨烯(GO)进行改性,可以有效控制各种接枝聚合物分子链的长度和接枝密度,赋予GO不同的功能性,如良好的溶剂分散性、环境敏感刺激响应性、生物相容性等。文中分别从GO表面固定引发剂直接引发ATRP反应和GO表面非共价键结合ATRP聚合物分子链2种途径,对ATRP反应改性GO进行综述,总结了ATRP改性反应的过程条件和研究方法,并指出了GO功能化复合材料的功能特性和应用前景。

Atom transfer radical polymerization （ATRP） is a controlled/＂living＂ radical polymerization technology with potential applications. ATRP was used for the modification of graphene oxide （GO）, and it was able to control the length and grafting density of various polymer chains effectively. Besides, GO was endowed with different functionality such as well dispersion in solvents, environmental sensitive with stimuli responsive, biocompatibility, etc. In this paper, the modification of GO by ATRP was reviewed from two different approaches respectively, one is that the GO surface initiates ATRP reaction directly, and the other is to introduce the polymer chains synthetized by ATRP onto GO surface with non-covalent interactions. The process conditions and the research methods of the ATRP modification method were summarized, and the functional features and the future prospect in applications of the modified GO composite materials were also pointed out.