梯度共聚物是一类拥有广阔应用前景的新型聚合物,其特点是,大分子中单体单元沿分子链呈连续的梯度变化。文中在介绍梯度共聚物概念的基础上,总结了制备梯度共聚物应当满足的必要条件。重点综述了近年来梯度共聚物合成技术的研究进展,如＂活性＂/可控聚合方法、开环易位聚合法,以及特殊的自由基聚合手段等,并对不同制备方法进行了对比。最后,展望了今后梯度共聚物的研究方向。
Gradient copolymers are a class of polymer with a promising future in application.It is characterized by the macromolecules that contain at least one section of continuously changing monomer composition.Based on the introducing of the concept of the gradient copolymers,the necessary condition required for preparing gradient copolymers was summarized.In this article,it was focused on reviewing the research developments on various technical methods for synthesizing gradient copolymers in recent years,such as ＂living＂/controlled polymerization,ring-open metathesis polymerization,special case in radical polymerization and so on.The differences between each method were compared.The prospects of future researches on the gradient copolymers were suggested.
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