摘要
本文采用光子相关光谱技术测定了环、线型聚苯乙烯在θ及良溶剂中高分子线团的扩散行为，得到一系列流体力学参数。结果表明环、线型聚苯乙烯分子线团结构的稀溶液行为存在很大差异，并且这种差异的程度随分子量变化而变化。特别是在低分子量区间，环张力对其流体力学性质的影响不容忽视。
In this paper, photon correlation spectroscopy technique was used to determine the diffusion behavior of macromolecular coil in theta and good solvents on ring and liner-shaped polystyrene.A series of fluid mechanics parameters were obtained.The results show that the dilute solution behavior in macromolecular coil structure exist very large difference between ring and liner-shaped polystyrene. Along with molecular weight changed,the difference degree will change too. Especially in the range of low molecular weight.the effect of ringtension on fluid mechanics properties can not be neglected.
关键词
环型聚苯乙烯
光子相关光谱
稀溶液
性质
Ring-shaped polystyrene Translation diffusion coefficients Photon correlation spectroscopy Dilute solution property
