PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION

DONG Jianhua; YANG Jianqing; QIU Kunyuan; FENG Xinde

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PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION

Papers | Updated：2021-06-21

- PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION
- Vol. 10, Issue 2, Pages: 169-175(1992)
- Affiliations：
  
  1. Department of Chemistry, Peking University,Beijing,100871
  2. Peking University
  3. Beijing 100871
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 June 1992
- Accepted：
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[1]董建华,杨建清,丘坤元,冯新德.PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION[J].Chinese Journal of Polymer Science,1992,{4}(02):169-175.

DONG Jianhua, YANG Jianqing, QIU Kunyuan, et al. PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION[J]. 1992, 10(2): 169-175.
[1]董建华,杨建清,丘坤元,冯新德.PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION[J].Chinese Journal of Polymer Science,1992,{4}(02):169-175. DOI：

DONG Jianhua, YANG Jianqing, QIU Kunyuan, et al. PHOTOSENSITIVITY OF Ce (Ⅳ) INITIATED METHYL ACRYLATE POLYMERIZATION[J]. 1992, 10(2): 169-175. DOI：

摘要

<正> The influences of UV light irradiation （313 nm） and diffused daylight on the polymerization of methyl acrylate initiated by the ceric ammonium nitrate without any reducing agent have been studied both in aqueous nitric acid and in pure water. The rate of polymerization was found to be accelerated and the overall activation energy and the induction time were found to be decreased sharply by the UV light irradiation. Under UV light

the rate of polymerization is 8 times as high as the rate in dark. The rate of polymerization was found to attain a maximum with the increase of nitric acid concentration and the rate of polymerization became less sensitive to UV light in the presence of nitric acid whereas the induction period reduced outstandingly. Based on the experimental results

the mechanism is proposed.

Abstract

The influences of UV light irradiation （313 nm） and diffused daylight on the polymerization of methyl acrylate initiated by the ceric ammonium nitrate without any reducing agent have been studied both in aqueous nitric acid and in pure water. The rate of polymerization was found to be accelerated and the overall activation energy and the induction time were found to be decreased sharply by the UV light irradiation. Under UV light

the mechanism is proposed.

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