Terpolymerization of methyl methacrylate, poly(ethylene glycol) methyl ether methacrylate or poly(ethylate glycol) ethyl ether methacrylate with methacrylic acid and sodium styrene sulfonate:: determination of the reactivity ratios
Terpolymerization of methyl methacrylate, poly(ethylene glycol) methyl ether methacrylate or poly(ethylate glycol) ethyl ether methacrylate with methacrylic acid and sodium styrene sulfonate:: determination of the reactivity ratios
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DOI：
10.1016/s0014-3057(01)00205-1
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发表时间：
2002-03-01
影响因子：
6
通讯作者：
Migonney, V
中科院分区：
文献类型：
--
作者：
Belleney, J;Hélary, G;Migonney, V
通过甲基丙烯酸甲酯（MMA）、聚乙二醇甲醚甲基丙烯酸酯（PMEM）或聚乙二醇乙醚甲基丙烯酸酯（PEEM）与甲基丙烯酸（MA）和苯乙烯磺酸钠（NaSS）的自由基三元共聚，得到了含离子单体的材料。反应在二甲基亚砜中使用偶氮二（异丁腈）作为引发剂进行。根据一般共聚方程，使用Finnemann-Ross、Kelen-Tudos和Tidwell-Mortimer方法计算不同对或单体的竞聚率。竞聚率的值表明，对于MMA、PMEM或PEEM与MA和NaSS的三元聚合，不同的单体单元可以被认为是沿着链随机分布的。在不同的三元共聚物的共聚单体的平均组成进行了计算，实验和理论组成之间显示出良好的一致性。瞬时组成是恒定的，直到约70%的转化。对于更高的转化率，离子单体的插入根据所研究的系统增加或减少。(C)2002爱思唯尔科技有限公司。保留所有权利。
Materials bearing ionic monomers were obtained through free radical terpolymerization of methyl methacrylate (MMA), poly(ethylene glycol) methyl ether methacrylate (PMEM) or poly(ethylene glycol) ethyl ether methacrylate (PEEM) with methacrylic acid (MA) and sodium styrene sulfonate (NaSS). The reactions were carried out in dimethyl sulfoxide using azobis(isobutyronitrile) as initiator. The reactivity ratios of the different couple or monomers were calculated according to the general copolymerization equation using the Finnemann-Ross, Kelen-Tudos and Tidwell-Mortimer methods. The values of the reactivity ratios indicate that the different monomer units can be considered as randomly distributed along the chains for terpolymerizations of MMA, PMEM or PEEM with MA and NaSS. The average composition of the comonomers in the different terpolymers were calculated, showing a good agreement between the experimental and theoretical compositions. The instantaneous compositions are constant until about 70% of conversion. For higher conversions, the insertion of ionic monomers increases or decreases according to the system studied. (C) 2002 Elsevier Science Ltd. All rights reserved.