Free-Radical Homo- and Copolymerization of Vinyl Acetate and n-Butyl Acrylate: Kinetic Studies by Online 1H NMR Kinetic Experiments

被引：14

作者：

Abdollahi, Mahdi ^{[1
]}

Massoumi, Bakhshali ^{[2
]}

Yousefi, Mohammad Reza ^{[2
]}

Ziaee, Farshid ^{[3
]}

机构：

[1] Res Inst Petr Ind RIPI, Polymer Synth Res Ctr, Polymer Sci & Technol Div, Tehran, Iran

[2] Payame Noor Univ, Tabriz Branch, Dept Chem, Tabriz, Iran

[3] Iran Polymer & Petrochem Inst, Tehran, Iran

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2012年 / 123卷 / 01期

关键词：

vinyl acetate/butyl acrylate; free-radical copolymerization; online H-1 NMR kinetic experiments; comonomer reactivity ratios; rate coefficient; MONOMER REACTIVITY RATIOS; RATE COEFFICIENTS; METHYL-METHACRYLATE; ITACONIC ACID; NMR-SPECTROSCOPY; LINEAR METHOD; POLYMERIZATION; STYRENE; MICROSTRUCTURE; TERMINATION;

D O I：

10.1002/app.34510

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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

引用

页码：543 / 553

页数：11

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