高分子立构复合结晶的研究进展

发布时间：2018-02-21 01:08

本文关键词： 立构复合结晶聚酯聚碳酸酯结晶结构热性能　出处：《高分子学报》2017年06期 　论文类型：期刊论文

【摘要】：立构复合结晶是高分子结晶中的一种普遍现象,也是不同高分子之间共结晶的特殊形式.互为立体异构高分子在共混物和立体嵌段共聚物中可形成立构复合结晶.由于这种独特的链凝聚结构,立构复合结晶材料与相应的同质结晶材料的性能显著不同,立构复合结晶通常可提高高分子材料的熔点、耐热性、结晶能力、结晶度、机械力学性能、耐溶剂性能等.通过立构复合结晶,可使一些非晶或难结晶的高分子转变为可结晶或高结晶度的状态,从而实现材料性能的转变.因此,互为立体异构高分子之间的立构复合结晶为聚合物材料的性能优化和调控提供了有效的途径.文献已报道了多类可立构复合结晶的聚合物体系,包括脂肪族聚酯、脂肪族聚碳酸酯、聚甲基丙烯酸酯、聚酰胺和聚酮等.本文根据聚合物化学结构的不同,针对文献已报道的可立构复合结晶的高分子体系,综述了其立构复合结晶的形成条件、结构特征与物理性质.
[Abstract]:Structural composite crystallization is a common phenomenon in polymer crystallization. It is also a special form of cocrystallization among different polymers. The stereo-isomerism polymer can form the orthotropic compound crystallization in the blends and block copolymers. The properties of orthotropic composite crystalline materials are obviously different from those of homogenous crystalline materials. The crystallization point, heat resistance, crystallization ability, crystallinity, mechanical and mechanical properties of polymer materials can be improved by orthotropic composite crystallization. Solvent resistance and so on. Some amorphous or hard crystallized polymers can be transformed into crystallizable or high crystallinity state by orthotropic composite crystallization, thus the properties of the materials can be transformed. The crystallization of orthotropic compounds between isomerized polymers provides an effective way to optimize and regulate the properties of polymer materials. Many kinds of orthotropic composite crystalline polymer systems, including aliphatic polyester, have been reported in the literature. Aliphatic polycarbonate, polymethacrylate, polyamide and polyketone etc. According to the different chemical structure of polymer, this paper summarizes the forming conditions of orthotropic compound crystalline polymer system, which has been reported in literature. Structural and physical properties.
【作者单位】：浙江大学化学工程与生物工程学院化学工程联合国家重点实验室;
【基金】：国家自然科学基金(基金号21422406)项目资助
【分类号】：O631.13

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