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Synthesis and properties of unsaturated polyoxyethylene and its graft copolymers with styrene

机译：不饱和聚氧乙烯及其与苯乙烯的接枝共聚物的合成及性能

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The unsaturated polyoxyethylene (PEO) was synthesized by copolymerization of ethylene oxide with allyl glycidyl ether in toluene using bimetallic-oxa-alkoxide as a catalyst. The effects of polymerization conditions on conversion and intrinsic viscosity of the copolymer were studied. The unsaturated copolymer was characterized with infrared spectra, H-1 NMR, and wide-angle X-ray diffraction. The relationship between crystallinity of the copolymers and conductivity of their LiClO4, complexes were investigated. The copolymer with similar to 65 wt % PEO content exhibits a room temperature conductivity of 1 x 10(-4) S cm(-1) at a molar ratio of EO/Li = 20. The unsaturated PEO was graft-copolymerized with styrene using 2,2'-azobis(isobutyronitrile) as initiator in toluene, with grafting efficiency similar to 50%. The purified graft copolymer was characterized with infrared spectra, H-1 NMR, and wide-angle X-ray diffraction, and was shown to have good emulsifying properties and a phase-transfer catalytic property. LiClO4, complex of the graft copolymer with 70 wt % PEO content exhibits a room temperature conductivity approaching 1 x 10(-4) S cm(-1) at molar ratio of EO/Li = 20/1. (C) 1998 John Wiley & Sons, Inc. [References: 18]
机译：不饱和聚氧乙烯（PEO）是由环氧乙烷与烯丙基缩水甘油醚在甲苯中以双金属-氧杂-醇盐为催化剂共聚而合成的。研究了聚合条件对共聚物转化率和特性粘度的影响。通过红外光谱，H-1 NMR和广角X射线衍射对不饱和共聚物进行了表征。研究了共聚物的结晶度与其LiClO4配合物电导率之间的关系。在EO / Li = 20的摩尔比下，具有接近65 wt％PEO含量的共聚物在室温下的电导率为1 x 10（-4）S cm（-1）。不饱和PEO与苯乙烯的接枝共聚反应是2,2'-偶氮二（异丁腈）在甲苯中作为引发剂，接枝效率接近50％。纯化的接枝共聚物通过红外光谱，H-1 NMR和广角X射线衍射进行表征，并显示出具有良好的乳化性能和相转移催化性能。 LiClO4，接枝共聚物的配合物，PEO含量为70 wt％，在EO / Li = 20/1的摩尔比下，其室温电导率接近1 x 10（-4）S cm（-1）。 （C）1998 John Wiley＆Sons，Inc. [参考：18]

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