高分子软物质动力学与NMR  

CHAIN DYNAMICS AND NMR OF POLYMER-TYPE SOFT MATTER

作　　者：冯继文[1] 王立英[1] 

机构地区：[1]中国科学院武汉物理与数学所波谱与原子分子物理国家重点实验室,武汉430071

出　　处：《物理学进展》2008年第1期1-21,共21页Progress In Physics

基　　金：国家自然科学基金(批准号:10474116;10674152)

摘　　要：高分子熔体或浓溶液中链段扩散和链的弛豫模式满足普适的物理定律,这些定律代表了高分子链动力学的普遍特征。核磁共振(NMR)则为我们直接验证这些物理定律或揭示高分子运动的基本规律提供了强有力的实验手段。本文介绍三个基本的高分子动力学模型(即Rouse模型,蛇行/管道模型和重整化Rouse模型)和以这三个理论模型为基础的NMR实验原理和技术。最后对相关的NMR实验结果进行了综述,并着重与理论模型所期待的结果进行了比较。Segment diffusion and chain relaxation modes in polymer melts or in concentrated polymer solutions are dominated by certain physical laws which are specifically regarded to represent the universal features of polymer dynamics. Nuclear Magnetic Resonance （NMR） is a powerful experimental tool for understanding or disclosing these laws. In this review, three basic models for polymer dynamics, namely the Rouse model, the tube/reptation model and the renormalized Rouse model, are outlined; and the NMR theory and experimental methods based on these three models are also described and discussed. The NMR experimental results are reviewed and compared with the theoretic predictions from the above three models.

关 键 词：高分子熔体 Rouse模型 管道/蛇行模型 NMR弛豫 NMR扩散 

分 类 号：O631[理学—高分子化学]