Citation: LI Xinxin, YIN Xiaomin, WU Pingping, HAN Zhewen, ZHU Qingren. EFFECT OF TEMPERATURE ON COPOLYMERIZATION PARAMETERS OF HYDROXYETHYL ACRYLATE AND METHYL METHACRYLATE[J]. Chinese Journal of Polymer Science, ;1998, 16(1): 25-31. shu

EFFECT OF TEMPERATURE ON COPOLYMERIZATION PARAMETERS OF HYDROXYETHYL ACRYLATE AND METHYL METHACRYLATE

Received Date: 7 June 1997

The copolymerization of 2-hydroxyethyl acrylate (HEA, M1) and methylmethacrylate (MMA, M2) in cyclohexanone was studied. The multiple experiments ofsolution copolymerization with low conversion were carried out at two sensitive compositionfeed points at 60, 80, 100, 120 and 140℃, respectively. The composition of the copolymerswas analyzed by 1H-NMR. The reactivity ratios which were estimated by the Error-in-Variable Method (EVM) of Mayo-Lewis equation were found to be r1 = 0.328, r2 = 1.781for 60℃; 0.375,1.709 for 80℃;0.406,1.654 for 100℃;0.439,1.540 for 120℃ and 0.455,1.400 for 140℃,and the 95% joint confidence intervals of the reactivity ratios were also determined.According to r1 and r2,Arrhenius relations and the activity energy difference between the homo- and cross-propagation were calculated.
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