A calorimetric investigation of the formation of a stereocomplex in poly(methyl methacrylate) solutions
A calorimetric investigation of the formation of a stereocomplex in poly(methyl methacrylate) solutions
复制标题
聚甲基丙烯酸甲酯溶液中立体复合物形成的量热研究
DOI：
10.1016/0014-3057(74)90172-4
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
J. Pouchlý
中科院分区：
文献类型：
--
作者：
J. Biroš;Z. Máša;J. Pouchlý
测定了异构型间规聚(甲基丙烯酸甲酯)在1%二甲基甲酰胺和甲苯中的立体络合物的生成热ΔH。从ΔH的浓度依赖关系可以推断，形成了多分子聚集体，其组成为SYN：ISO=1·5：1：2：1。测量还表明，热效应对溶剂的质量和两种聚合物组分的规整性都有很强的依赖性。
The heat of formation ΔH of the stereocomplex of iso + syndiotactic poly(methyl methacrylate) in a 1 per cent solution in dimethylformamide and in toluene was measured. From the concentration dependence of ΔH it may be inferred that multimolecular aggregates are formed, with a composition given by the ratio syn: iso = 1·5: 1to2: 1. The measurements also indicate a strong dependence of the thermal effect on the quality of the solvent and on the tacticity of both polymer components.