| 氧杂环丁烷光固化动力学研究 |
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| 引用本文： | 刘海涛,莫健华,刘厚才.氧杂环丁烷光固化动力学研究[J].华中科技大学学报(自然科学版),2008,36(11). |
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| 作者姓名： | 刘海涛 莫健华 刘厚才 |
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| 作者单位： | 华中科技大学材料成形与模具技术国家重点实验室 |
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| 基金项目： | 湖北省自然科学基金资助项目，国家科技型中小企业创新基金资助项目 |
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| 摘 要： | 采用实时傅里叶红外光谱对氧杂环丁烷(OXT221)的光固化过程进行了动力学研究.在355 nm紫外光照射下监测981和827 cm-1两波峰吸收峰变化,得到单体转化率-时间曲线.通过研究氧杂环丁烷的光固化聚合机理,即从光聚合各基元反应的活化能大小的分析和多元醇促进阳离子聚合的活化单体机理的影响出发,揭示了提高光引发剂浓度、光强和温度可以提高转化率,而多元醇对单体聚合反应影响不大.
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| 关 键 词： | 光聚合 动力学 阳离子聚合 开环聚合 氧杂环丁烷 实时傅里叶红外光谱 |
Research on the photopolymerization kinetics of oxetane |
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| Liu Haitao Mo Jianhua Liu Houcai.Research on the photopolymerization kinetics of oxetane[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2008,36(11). |
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| Authors: | Liu Haitao Mo Jianhua Liu Houcai |
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| Abstract: | Real-time Fourier tranform infraed spectroscogy(RTFTIR) technique was employed to investigate the photopolymerization of oxetane(OXT 221).The conversion of oxetane as a function of time was determined by monitoring the drop of the absorption at 981 and 827 cm-1 in FTIR spectra under 355 nm laser irradiation.Through analyzing the photopolymerization mechanism of oxetane,which includes studying the activation energy of elementary reactions of photopolymerization,and the influence of activated monomer mechanism on the cationic polymerization,it disclosed that,as the photoinitiator concentration,irradiation intensity and temperature increased,the conversion of oxetane increased,and polyol had minimal effects on the curing reaction. |
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| Keywords: | photopolymerization kinetics cationic polymerization ring opening oxetane real-time fourier transform infrared spectroscopy |
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