Photo-induced cobalt-mediated radical polymerization of vinyl acetate

文献情報

出版日 2013-08-28

DOI 10.1039/C3PY00913K

インパクトファクター 5.582

著者

Xuelang Miao, Wei Zhu, Zhengbiao Zhang, Wei Zhang, Xiulin Zhu, Jian Zhu

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要旨

Well-controlled poly(vinyl acetate) (PVAc) was successfully synthesized by photo-induced cobalt-mediated radical polymerization using (2,4,6-trimethylbenzoyl) diphenylphosphine oxide (TPO), which is commercially available, cheap, easy to store and has a high initiation efficiency, as the initiator in the presence of Co(acac)2 under UV irradiation (65 μW cm−2 at 365 nm) at 30 °C. The polymerization showed characteristics of living polymerization behaviors, such as linear kinetics, the molecular weight of the polymers linearly increasing with conversion, and the obtained polymers had a narrow molecular weight distribution. The polymerization can reach high conversions with a controlled manner (>80%, polymers with a molecular weight distribution in the range of 1.1–1.4) after a short induction time. Polymers with molecular weights as high as 120 000 g mol−1, with a narrow molecular weight distribution, were obtained. The mechanism of the polymerization was proposed based on the polymerization behavior and polymer structure.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

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Photo-induced cobalt-mediated radical polymerization of vinyl acetate

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