摘要
随着纳米技术的发展,纳米尺度聚合物材料的应用变得越来越普及,纳米尺度受限体系中聚合物分子链的扩散行为受到人们的广泛关注。由于受限效应,聚合物分子链的运动行为偏离本体,出现尺寸依赖性。研究受限体系中聚合物的扩散行为,对受限聚合物的结构设计及实际应用有十分重要的意义。文中从聚合物扩散基本理论出发,综述了近30年来聚合物分子链在不同维度受限体系中扩散行为的研究进展,介绍了不同受限状态下聚合物分子链扩散的物理机制、影响因素以及相关的理论模型,并对该领域进行了总结与展望。
With the development of nanotechnology,the application of confined polymer becomes more and more wide.The diffusion behavior of the polymer chains in the confined system has drawn extensive attentions.Due to the confinement effect,the diffusion behavior of the polymer chains,which shows the dependence on the dimension of polymer,deviates from that of the bulk state.The studies of the polymer diffusion behavior in confined systems are significantly important for the structure design and the practical applications of confined polymer materials.In this paper,the basic theories of polymer diffusion were introduced and the research progress in polymer diffusion behaviors under different dimension confinement was reviewed.Meanwhile,the physical mechanisms,influencing factors and theoretical models responsible for the deviation of confined polymer diffusion behaviors from the bulk state were introduced.Finally,the problems in this field and prospects in the further studies were also discussed.
作者
张翠云
陈欣
周娴婧
阳禹辉
王新平
Cuiyun Zhang;Xin Chen;Xianjing Zhou;Yuhui Yang;Xinping Wang(Department of Chemistry,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2020年第6期151-161,共11页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(21674100,21873085)。
关键词
受限体系
聚合物扩散
扩散系数
相对分子质量
confined systems
polymer diffusion
diffusion coefficient
molecular weight
