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首页> 外文期刊>Journal of Applied Polymer Science >Phase morphology and compatibilization mechanism in ternary polymer blend systems of polyethylene terephthalate, polyolefin rubber, and ionomer
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Phase morphology and compatibilization mechanism in ternary polymer blend systems of polyethylene terephthalate, polyolefin rubber, and ionomer

机译：聚对苯二甲酸乙二酯，聚烯烃橡胶和离聚物的三元聚合物共混体系中的相形貌和增容机理

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摘要

The phase morphology and the mechanism of the compatibilization in ternary blends of PET/EBM (ethylene buten rubber)/ionomer (partially neutralized ethylene and methyl methacrylic acid copolymer, EMAA) are examined. Applying the repulsion idea in random copolymer, the ionomer was selected as an encapsulating agent to compatibilize PET/EBM blend. As anticipated, the ionomer can encapsulate EBM in PET matrix and effectively compatibilize PET and EBM. The results of droplet sandwich experiments verified that the actual driving force for the encapsulation is wettability. In addition, this wettablility was found to be realized by the contribution of the polar and nonpolar units in the ionomer: The polar units decrease the interfacial tension between PET and the ionomer, and the nonpolar units decrease that between EBM and the ionomer. The metal ions in the ionomer have little influence on the wettability, and consequently EMAA can encapsulate EBM even when unneutralized. The efficiency of the compatibilization, on the other hand, is not determined by the wettability only, and the metal ions play an important role. EMAA can effectively compatibilize EBM and PET only when neutralized. This compatibilization effectiveness of the ionomer is supposedly due to the strong interaction between PET and the metal ions. (C) 2004 Wiley Periodicals, Inc.
机译：研究了PET / EBM（乙烯丁烯橡胶）/离聚物（部分中和的乙烯和甲基丙烯酸甲酯，EMAA）的三元共混物的相形态和增容机理。将排斥思想应用到无规共聚物中，选择离聚物作为包囊剂以使PET / EBM共混物相容。如所预期的，离聚物可以将EBM包封在PET基质中并且有效地使PET和EBM相容。液滴夹心实验的结果证实了封装的实际驱动力是可润湿性。另外，发现这种可润湿性是通过离聚物中极性和非极性单元的贡献实现的：极性单元降低了PET与离聚物之间的界面张力，非极性单元降低了EBM与离聚物之间的界面张力。离聚物中的金属离子对润湿性的影响很小，因此即使未中和，EMAA也可以包封EBM。另一方面，相容化的效率不仅取决于润湿性，金属离子起着重要的作用。 EMAA只有中和后才能有效地使EBM和PET相容。离聚物的这种增容效果据认为是由于PET和金属离子之间的强相互作用。 （C）2004年Wiley Periodicals，Inc.

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