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首页> 外文期刊>Journal of Applied Polymer Science >Chain Orientation Resulting from the Crystallization Under Strain of Poly(#epsilon#-caprolactone) in Miscible Blends with Poly(styrene-co-maleic anhydride)
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Chain Orientation Resulting from the Crystallization Under Strain of Poly(#epsilon#-caprolactone) in Miscible Blends with Poly(styrene-co-maleic anhydride)

机译：聚（ε-己内酯）与聚（苯乙烯-马来酸酐）混溶共混物在应变作用下结晶导致的链取向

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摘要

Amorphous miscible blends of poly(#epsilon#-caprolactone)(PCL) with a random copolymer of styrene-maleic anhydride (SMA) were stretched at room temperature and the crystallization of PCL was allowed to develop under strain. The crystallization of PCL,from oriented amorphous chains, leads to macroscopic crystalline chain orientation. Using infrared dichroism and wide-angle X-ray scattering techniques, it was found that the resultant crystalline orientation of PCL is always parallel to the strain direction, regardless of the experimental conditions, which is in contrast with the (PCL/poly(vinyl chloride) blend, where both parallel and perpendicular chain orientations can be induced. Furthermore, the degree of crystalline orientation of PCL is influenced by the initial stretching-induced amorphous chain orientation of the system.
机译：聚（ε-己内酯）（PCL）与苯乙烯-马来酸酐（SMA）的无规共聚物的非晶态混溶共混物在室温下拉伸，并使PCL的结晶在应变下发展。 PCL从取向的无定形链中结晶，导致宏观的晶体链取向。使用红外二色性和广角X射线散射技术发现，无论实验条件如何，PCL的最终晶体取向始终平行于应变方向，这与（PCL /聚（氯乙烯）混合，可以同时诱导平行和垂直链取向，而且PCL的结晶取向程度受初始拉伸诱导的系统非晶链取向的影响。

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