聚丙烯酸丁酯-四氢呋喃稀溶液性质

DILUTE SOLUTION PROPERTIES OF THE POLY (BUTYL-ACRYLATE) IN THF

聚丙烯酸酯是一类具有优良性能和广泛用途的高分子材料。为了探讨材料性能与分子结构的关系,我们用小角激光光散射法、膜渗透压法、稀溶液粘度法及高效体积排斥色谱法研究了聚丙烯酸丁酯的(PBA)稀溶液性质。订定了聚丙烯酸丁酯在四氢呋喃中的极限粘数-分子量关系式。估算了分子的无扰尺寸与热力学参数。证明该聚合物与聚苯乙烯在所用的色谱条件下符合流体力学体积普适标定关系。

Dilute solution properties of the poly(butyl-acrylate) were studied by means of low angle laser light scattering, membrane osmometer, viscosity and high performance size exclusion chro-matography. The limiting viscosity number-molecular weight relationship of this polymer in THF at 25℃ was determined. The data of SEC show that both PBA and PS have identical hydrody-namic volume universal calibration curve.