聚乙烯醇中红外光谱研究

Middle Infrared Spectroscopy Study of Polyving Akohol

采用中红外(MIR)光谱研究了聚乙烯醇的分子结构,实验发现:聚乙烯醇分子的红外吸收模式主要包括:νOH-聚乙烯醇、νasCH2-聚乙烯醇、νsCH2-聚乙烯醇、δCH2-聚乙烯醇和νC-O-聚乙烯醇.采用变温中红外(TD-MIR)光谱进一步开展了聚乙烯醇分子热稳定性的研究,实验发现:随着测定温度的升高(303 K~523 K),聚乙烯醇分子主要官能团对应的红外吸收频率及强度均有明显的改变,并进一步进行了机理的研究,拓展了MIR光谱和TD-MIR光谱在重要的纺织材料(聚乙烯醇)结构及热稳定性的研究范围.

The molecular structure of polyving akohol was studied by middle infrared(MIR)spectroscopy.The experiment discovered that the infrared absorption modes of polyving akohol molecular mainly includedνOH-polyving akohol,νasCH2-polyving akohol,νsCH2-polyving akohol,δCH2-polyving akoholandνC-O-polyving akohol.The thermal stability of polyving akohol molecular was also studied by temperature-dependent middle infrared(TD-MIR)spectroscopy.The results showed that with the increase of temperature(303K~523K),the corresponding infrared absorption frequency and intensity of polyving akohol molecular changed obviously and the mechanism was further studied.The study expanded the research scope of MIR spectroscopy and TD-MIR in the analysis of the structure and thermal stability of important textile materials(polyving akohol).