Kinetics of Photopolymerization of Acrylates with Functionality of 1-6

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• 作者：Igor V. Khudyakov ; Jodi C. Legg ; Michael B. Purvis ; and Bob J. Overton
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：1999
• 出版时间：September 1999
• 年：1999
• 卷：38
• 期：9
• 页码：3353 - 3359
• 全文大小：118K
• 年卷期：v.38,no.9(September 1999)
• ISSN：1520-5045

文摘

The photopolymerization of a number of neat acrylate monomers with acrylate functionalityfrom 1-6 was studied with photoDSC (DSC = differential scanning calorimetry) and with acure monitor using a fluorescent probe. PhotoDSC results show that conversion of monomersranges from 40 to 100%, depending upon the functionality and structure of a monomer. Kineticsof a heat flow was well described as an autoaccelearted reaction for all monomers. Kinetics ofthe hardening of a sample under light at an ambient temperature was nicely fit into the two-exponential law; rate constants k₁ and k₂ in this empirical analysis were in the range of 0.5-35min^-1. The effect of an inhibitor and of air oxygen on kinetics of photopolymerization was alsostudied. The dependence of the rate of polymerization and conversion upon the functionality ofa monomer is discussed.