高分子单链凝聚态与线团相互穿透的多链凝聚态

Single-chain Condensed State and Interpenetrated Multi-chain Condensed State of Polymers

高分子单链凝聚态由于链内链结构单元间存在范德华吸引作用 ,高分子链呈打圈链构象 ,而多链凝聚态由于链内链单元间的吸引作用被与相互穿透的近邻链的单元间吸引作用所屏蔽 ,高分子链呈高斯链构象。本文简要介绍单链凝聚态试样的制备方法 ,单链单晶体、单链玻璃体、溶胀的单链高弹态拉伸等的实验观察 ,并提出从单链凝聚态到多链凝聚态的转变过程问题 ,即高分子线团的相互穿透过程 ,目前还缺少基础了解。

The macromolecular chain in single\|chain condensed state is of looped chain conformation because of van der Waals attractive interaction between the intra\|chain monomer units along the chain.As the attractive interaction between intra\|chain monomer units in multi\|chain condensed state is shielded by the attractive interaction between inter\|chain monomer units of the neighboring chains in inter\|penetration,the molecular chain in multi\|chain condensed state is of Gauss conformation.The methods of preparing samples of single\|chain condensed state,the experimental observations of single\|chain single crystals,single\|chain glasses and the stretching of solvent swollen single\|chain rubbery state are briefly discussed.The process of transition from a single\|chain condensed state to a multi\|chain condensed state,that is the process of polymer coil inter\|penetration,is a problem lacking basic understanding at the present time.