Lower critical solution temperature and upper critical solution temperature phase behaviour in random copolymer blends: poly(styrene-co-acrylonitrile)/poly(methyl methacrylate) and poly(styrene-co-acrylonitrile)/poly(ε-caprolactone)
Lower critical solution temperature and upper critical solution temperature phase behaviour in random copolymer blends: poly(styrene-co-acrylonitrile)/poly(methyl methacrylate) and poly(styrene-co-acrylonitrile)/poly(ε-caprolactone)
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无规共聚物共混物中的下临界溶解温度和上临界溶解温度相行为：聚（苯乙烯-丙烯腈）/聚（甲基丙烯酸甲酯）和聚（苯乙烯-丙烯腈）/聚（ε-己内酯）
DOI：
10.1016/0032-3861(95)93654-5
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发表时间：
1995
期刊：
影响因子：
4.6
通讯作者：
Takashi Inoue
中科院分区：
文献类型：
--
作者：
Noboru Higashida;J. Kressler;Takashi Inoue
根据聚甲基丙烯酸甲酯（PMMA）/苯乙烯-丙烯腈共聚物（SAN）共混体系的三个链段相互作用参数（χS/MMA（T），χAN/MMA（T）和χS/AN（T））的温度依赖性数据，计算了SAN/PMMA共混体系的相行为随共聚物组成的变化。使用具有不同共聚物组成的共混物可能会显著改变聚合物-聚合物相互作用参数χAB（T）的温度依赖性，从随温度增加变为随温度减小。在SAN中丙烯腈的摩尔分数为0.11%至55%的共聚物组成范围内，χAB（T）参数随温度增加，导致较低的临界溶解温度行为，并且在SAN中AN的摩尔分数为0.10%至> 56%的共聚物组成范围内，χAB（T）参数随温度增加而减小，当一种或两种组分具有相对低的分子量时，即对于低聚物，预测上临界溶解温度行为。对于SAN与聚（ε-己内酯）的共混物可以获得类似的结论。
The phase behaviour of blends of poly(methyl methacrylate) (PMMA) and poly(styrene-co-acrylonitrile) (SAN) is calculated as a function of copolymer composition from the data of the temperature dependence of all three segmental interaction parameters, χi/j(T) of the system SAN/PMMA, i.e. χS/MMA(T), χAN/MMA(T) and χS/AN(T). Using blends with different copolymer compositions might change the temperature dependence of the polymer-polymer interaction parameter χAB(T) dramatically, from increasing to decreasing with temperature. In the copolymer composition range from ≈ 11 to 55 mol% of acrylonitrile in SAN the χAB(T) parameter is increasing with temperature, leading to lower critical solution temperature behaviour, and in the copolymer composition range up to ≈ 10 mol% and > 56 mol% of AN in SAN the χAB(T) parameter is decreasing with increasing temperature, predicting upper critical solution temperature behaviour when one or two components have relatively low molecular weight, i.e. for oligomers. Similar conclusions can be obtained for blends of SAN with poly (ε-caprolactone).