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首页> 外文期刊>Journal of Applied Polymer Science >Influence of a Photoinitiator on the Photochemical Stability of Poly(methyl methacrylate) Studied with Fourier Transform Infrared Spectroscopy
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Influence of a Photoinitiator on the Photochemical Stability of Poly(methyl methacrylate) Studied with Fourier Transform Infrared Spectroscopy

机译：傅里叶变换红外光谱研究光引发剂对聚甲基丙烯酸甲酯光化学稳定性的影响

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摘要

Fourier transform infrared (FTIR) spectroscopy was used to investigate the effect of a commercial photoinitiator [2,2-dimethoxy-2-phenylacetophenone (DMPA); Irgacure 651, Ciba, Basel, Switzerland] incorporated into poly(methyl methacrylate) (PMMA). Pure PMMA and modified PMMA (containing 5% DMPA) films were exposed to a xenon lamp in air. Qualitative and quantitative analyses of the recorded FTIR absorption spectra were done. This allowed us to determine the differences in the course of polymer photooxidative degradation occurring in PMMA and PMMA doped with DMPA. We found that the initiator added to polymer film enhanced the efficiency of the formation of the photooxidized products containing functional groups of different types, which could be distinguished by mathematical treatment of the FTIR spectra.
机译：傅里叶变换红外（FTIR）光谱用于研究商用光引发剂[2,2-二甲氧基-2-苯基苯乙酮（DMPA）; Irgacure 651，Ciba，Basel，瑞士]并入聚甲基丙烯酸甲酯（PMMA）中。将纯PMMA和改性PMMA（含5％DMPA）薄膜暴露于氙气灯中。对记录的FTIR吸收光谱进行了定性和定量分析。这使我们能够确定在PMMA和掺杂DMPA的PMMA中发生的聚合物光氧化降解过程中的差异。我们发现添加到聚合物膜中的引发剂提高了包含不同类型官能团的光氧化产物的形成效率，这可以通过对FTIR光谱进行数学处理来区分。

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