摘要
用核磁共振13C自旋-自旋弛豫时间T2表征了以离子微区为表观交联点的以甲基丙烯酸丁酯-丙烯酸共聚物为基础的弱交联高分子体系的微观链运动特征,及体系中溶剂分子的运动特征,结果表明:聚合物主链表现为快、慢两种运动状态,聚合物体系存在多相结构;溶剂分子也表现出两种不同的运动状态,从而间接反应了聚合物体系的微观结构。
The method of NMR 13C spin-spin relaxation time is used to determine the main chain movement and microstructure of weakly crosslinked polymeric system which is crosslinked through coordination bond. The biexponential spin-spin relaxation time of main chain carbon atoms is observed. The movement of solvent molecules in this polymeric system is also investigated. The spin-spin relaxation time also exhibits two components. This result is in accordance with the microstructure of this polmeric system.
出处
《功能高分子学报》
CAS
CSCD
1997年第4期532-535,共4页
Journal of Functional Polymers
关键词
弱交联
高分子体系
驰豫时间
链运动
微观结构
Weakly crosslinked polymeric system
Spin-spin relaxation time
Movement of chain