Polymerization of Methyl and Ethyl Methacrylates Initiated with Alkali-Metal Alkoxide Derivatives of Poly(ethylene oxide)
Polymerization of Methyl and Ethyl Methacrylates Initiated with Alkali-Metal Alkoxide Derivatives of Poly(ethylene oxide)
复制标题
聚环氧乙烷的碱金属醇盐衍生物引发甲基丙烯酸甲酯和甲基丙烯酸乙酯的聚合
DOI：
10.1295/polymj.8.190
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发表时间：
1976
期刊：
影响因子：
2.8
通讯作者：
H. Kakiuchi
中科院分区：
文献类型：
--
作者：
M. Tomoi;Yoshio Shibayama;H. Kakiuchi
甲基丙烯酸酯与聚环氧乙烷(PEO)的碱金属醇盐衍生物进行聚合，得到了由PEO和含有嵌段和接枝单元的聚甲基丙烯酸酯组成的共聚物。嵌段共聚是通过将醇盐加到甲基丙烯酸酯的碳-碳双键上引发的，而在嵌段共聚物上的接枝反应被认为是通过共聚物的侧酯基团与未反应的醇盐之间的酯交换反应进行的。具有两个端羟基的PEO的醇氧衍生物接枝得到了交联共聚物，而与具有一端活性的醇盐聚合则得到了可溶的共聚物。用核磁共振法测定了共聚物中接枝酯基团的相对含量。
The polymerization of methacrylates with alkali-metal alkoxide derivatives of poly(ethylene oxide) (PEO) yielded copolymers which consisted of PEO and polymethacrylates containing block and graft units. The block copolymerization was initiated by addition of the alkoxide to the carbon—carbon double bond of methacrylates, and the graft reaction onto the block copolymer formed was thought to proceed by transesterification between the pendant ester groups of the copolymer and the unreacted alkoxide. The grafting of the alkoxide derivative of PEO having two terminal hydroxyl groups resulted in formation of cross-linked copolymers, while the polymerization with the alkoxide having one active end gave soluble copolymers. The relative amount of the grafted ester groups in the copolymers was estimated by NMR spectroscopy.