期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 123, 期 1, 页码 543-553出版社
WILEY-BLACKWELL
DOI: 10.1002/app.34510
关键词
vinyl acetate/butyl acrylate; free-radical copolymerization; online H-1 NMR kinetic experiments; comonomer reactivity ratios; rate coefficient
Free-radical homo- and copolymerization of vinyl acetate (VAc) and n-butyl acrylate (BA) in benzene-d(6) were performed by using benzoyl peroxide as an initiator at 70 degrees C. Polymerization kinetic was followed by online H-1 NMR kinetic experiments. Significant drift in the comonomer mixture composition with reaction progress was observed. Reactivity ratios of VAc and BA were calculated by terminal unit model (TUM) as well as by simplified penultimate unit model (PUM) with r(VAc) = 0. It was found that copolymer composition can be described well by the TUM. Lumped kinetic parameter (k(p).k(t)(-0.5)) was estimated from experimental data. A good fitting between the theoretical and experimental drifts in the comonomer mixture and copolymer compositions with reaction progress was observed. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 543-553, 2012
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据