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本文综述关于含有共聚物的共混体系相容性方面研究的进展,特别着重于作者所在实验室近四年来应用电子显微学方法在研究共聚物和相应均聚物的共混体系的形态方面所取得的成果。文献中关于这类体系的相容性研究主要是应用电子显微法完成的,但存在明显分歧。有关的统计理论估算的相容性也与多数实验相差很远。本文作者等进行了一系列不同的化学组成、不同大分子构造(macromolecular Architecture)的共聚物合成及其与相应均聚物共混物的形态观察,发现共聚物的大分子构造对其与均聚物的相容性有重要影响。这一结论使文献中的分歧得以澄清。同时,根据实验结果还提出了共聚物/均聚物体系中微区内链段分布的密度梯度模型,据此模型并应用Helfand理论计算所预示的相容性与实验一致。
In this paper, the progress on the compatibility of blends containing copolymers was reviewed, with particular emphasis on the morphological aspects of the blends of copolymers and corresponding homopolymers by using electron microscopy in the laboratory of the author in the past four years The results achieved. Literature studies on the compatibility of these systems are mainly done by using electron microscopy, but there are obvious differences. The statistical comparability of statistical theory is also far from most experiments. The authors carried out a series of different chemical compositions. The macromolecular architecture copolymers were synthesized and their morphologies were observed with the corresponding homopolymer blends. Material compatibility has a significant impact. This conclusion clarifies the differences in the literature. At the same time, according to the experimental results, the density gradient model of the intramolecular chain segment distribution in the copolymer / homopolymer system is also proposed. According to this model, the compatibility predicted by the Helfand theory calculation is consistent with the experiment.