Xing'an Pang, Hongmei Sun, Q. Shen
May 1, 2004
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Influential Citations
14
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Journal
Polymer
Abstract
Abstract The copolymerization reactions of 2-(dimethylamino)ethyl methacrylate (DMAEMA) with methyl methacrylate (MMA), butyl methacrylate (n-BMA), methyl acrylate (MA), and butyl acrylate (n-BA), respectively, by an environmentally stable palladium acetylide Pd(PPh3)2(CCPh)2 (PPP) have been investigated. PPP shows relatively high catalytic activity for these copolymerizations. Reactivity ratios of these copolymerizatins have been measured and calculated by the Kelen–Tudos method for the first time, and their values are as follows: (1) rDMAEMA=1.13, rMMA=1.07; (2) rDMAEMA=0.77, rn-BMA=0.84; (3) rDMAEMA=1.54, rMA=0.09; (4) rDMAEMA=0.71, rn-BA=0.14. The mechanism of these copolymerizations was discussed and a radical mechanism was proposed.