Contribution to the study of the kinetics of radical homo‐ and copolymerization of fluoroalkyl methacrylates, 2. 2,2,3,4,4,4‐hexafluorobutyl methacrylate and 2,2,3,3,4,4,5,5‐octafluoropentyl methacrylate
Contribution to the study of the kinetics of radical homo‐ and copolymerization of fluoroalkyl methacrylates, 2. 2,2,3,4,4,4‐hexafluorobutyl methacrylate and 2,2,3,3,4,4,5,5‐octafluoropentyl methacrylate
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对甲基丙烯酸氟烷基酯、2. 2,2,3,4,4,4-六氟丁基甲基丙烯酸酯和 2,2,3,3,4,4,5,5- 的自由基均聚和共聚动力学研究的贡献甲基丙烯酸八氟戊酯
DOI：
10.1002/macp.1990.021911206
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发表时间：
1990
影响因子：
2.5
通讯作者：
O. Paleta
中科院分区：
文献类型：
--
作者：
A. Kárpátyová;J. Barton̆;O. Paleta
研究了甲基丙烯酸2，2，3，4，4，4-六氟丁酯(HFBMA)和甲基丙烯酸八氟戊酯(OFPMA)在4种不同溶剂中的自由基均聚合动力学。两种单体的聚合速率(Rp)均随溶剂给体数目的增加而增加，其中OFPMA的增加更为明显。这可能与溶剂的影响使HFBMA和OFPMA的双键电子密度趋于平缓有关，也与聚合过程中的凝胶效应有关。测定了HFBMA和OFPMA与丙烯酸丁酯、苯乙烯和甲基丙烯酸甲酯在苯中60℃的共聚反应参数，并求出了共振项和极性项的值q和e。
The kinetics of radical homopolymerization of 2,2,3,4,4,4-hexafluorobutyl methacrylate (HFBMA) and 2,2,3,3,4,4,5,5-octafluoropentyl methacrylate (OFPMA) was investigated in four different solvents. The rate of polymerization (Rp) of both monomers was found to increase with increasing donor number of the solvents, the increase being more marked in the case of OFPMA. This is probably associated with the leveling of the electron density of the double bonds of HFBMA and OFPMA by the influence of solvents as well as with the gel effect in the polymerization. Copolymerization parameters for HFBMA and OFPMA with butyl acrylate, styrene and methyl methacrylate were determined in benzene at 60°C and the values of resonance and polarity terms, Q and e, were also established.