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用粘度法研究了聚氯乙烯(PVC)-氯丁橡胶(CR)-环己桐(CHO)与PVC-丙烯腈和苯乙烯共聚物(AS)-CHO两体系中PVC-CR和PVC-AS的相容性,并用反相色谱和相差显微镜进行了对比。用粘度斜率系数的实验值b_(23)~(exp)和理论值b_(23)~(the)的偏差△b_(23)以及特性粘数的实验值[η]_m~(exp) 和理论值[η]_m~(the) 的偏差△[η]_m 可以表征聚合物(3)-聚合物(2)-溶剂(1)体系中聚合物间的相容性。上述三种方法的研究结果表明:PVC一CR 是热力学不相容体系,而PVC-AS则是热力学部分相容体系。
The viscosity of PVC-CR and PVC-AS in two systems of PVC-polychloroprene (CR) -cyclohexane (CHO) and PVC-acrylonitrile and styrene copolymer The compatibility was compared with reversed-phase and phase-contrast microscopy. The experimental values of viscosity slope coefficient b_ (23) ~ (exp) and the theoretical value b_ (23) ~ △ b_ (23) and the experimental value of intrinsic viscosity [η] _m ~ The deviation [η] _m of the value [η] _m (a) can characterize the compatibility among the polymers in the polymer (3) -polymer (2) -solvent (1) system. The results of the above three methods show that PVC-CR is a thermodynamic incompatible system and PVC-AS is a thermodynamic partially compatible system.