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用小角激光光散射、膜渗透压、高效体积排斥色谱及粘度技术,研究了聚丙烯酸丁酯-三氯甲烷体系的稀溶液性质。订定了该溶液体系在25℃时的极限粘数与分子量关系武,估算了分子链的无扰尺寸。高效体积排斥色谱数据表明,聚丙烯酸丁酯与聚苯乙烯不遵从流体力学体积普适标定关系。这可能是交联聚苯乙烯凝胶对前者有轻微的吸附作用所致。
The dilute solution properties of poly (butyl acrylate) - trichloromethane system were studied by low angle laser light scattering, membrane osmotic pressure, high performance exclusion chromatography and viscometric techniques. The relationship between the limiting viscosity number and molecular weight of the solution system was set at 25 ℃, and the unswept size of the molecular chain was estimated. Efficient volume exclusion chromatography data show that polybutyl acrylate and polystyrene do not comply with the universal calibration of hydrodynamic volume. This may be caused by the slight adsorption of the crosslinked polystyrene gel on the former.