POLY[N-(2-HYDROXYPROPYL)METHACRYLAMIDE] .4. HETEROGENEOUS POLYMERIZATION
POLY[N-(2-HYDROXYPROPYL)METHACRYLAMIDE] .4. HETEROGENEOUS POLYMERIZATION
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DOI：
10.1002/apmc.1978.050700110
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发表时间：
1978-01-01
期刊：
影响因子：
--
通讯作者：
KOPECEK, J
中科院分区：
文献类型：
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作者：
STROHALM, J;KOPECEK, J
研究了N-（2-羟丙基）甲基丙烯酰胺在丙酮中55°C自由基非均相聚合动力学。相对于单体（1.6）和引发剂（0.5）的反应级数的值指示在链增长期间的双分子终止和降解转移。发现聚合的总速率常数为5.6.10 - 4。向聚合混合物中添加少量溶剂（甲醇）导致聚合速率增加和所得聚合物的分子量增加，但溶剂的量更高导致这两个特性的降低。用经典的Bamford和Jenkins理论解释了最大值的出现与Rp和M_（max）随单体浓度的变化关系。
Kinetics of radical heterogeneous polymerization of N‐(2‐hydroxypropyl)methacrylamide was studied in acetone at 55°C. The values of reaction order with respect to the monomer (1.6) and to the initiator (0.5) indicate a bimolecular termination and degradative transfer during the chain growth. The over‐all rate constant of polymerization was found to be 5.6.10‐4. Addition of a small amount of a solvent (methanol) to the polymerization mixture led to an increased polymerization rate and increased molecular weight of the resulting polymer, but a higher amount of the solvent brought about a decrease of both characteristics. The Occurence of maxima on the dependences of Rp, as well as M̄won the monomer concentration was interpreted in terms of the classical Bamford and Jenkins theory.