聚四氟乙烯非晶相结构及热变性中红外光谱研究  

Study on Amorphous Phase Structure and Thermal Denaturation of Polytetrafluoroethylene by Mid-infrared Spectroscopy

作　　者：周悦茉 柴嘉欣 吉一帆 刘京婷 王雨欣 李昰凝 吴雨靓 于宏伟[1,2] ZHOU Yue-mo;CHAI Jia-xin;JI Yi-fan;LIU Jing-ting;WANG Yu-xin;LI Shi-ning;WU Yu-liang;YU Hong-wei(School of Chemical Engineering,Shijiazhuang University,Shijiazhuang 050035;Hebei Provincial Anesthetic Technology Innovation Center,Shijiazhuang 050035)

机构地区：[1]石家庄学院化工学院,河北石家庄050035 [2]河北省麻醉药技术创新中心,河北石家庄050035

出　　处：《纺织科学与工程学报》2024年第2期53-58,99,共7页Journal of Textile Science & Engineering

基　　金：石家庄市麻醉药技术创新中心项目(2023);河北省生物制药国际联合中心项目(2023)。

摘　　要：中红外(MIR)光谱(包括一维MIR光谱、二阶导数MIR光谱、四阶导数MIR光谱及去卷积MIR光谱)开展了聚四氟乙烯非晶相结构研究。一维MIR光谱乘谱及去卷积MIR光谱乘谱开展了聚四氟乙烯非晶相结构半定量研究。变温去卷积MIR光谱进一步开展了聚四氟乙烯非晶相结构热变性研究。实验发现,聚四氟乙烯非晶相结构的红外吸收模式主要包括:ν_(-1-去卷积-聚四氟乙烯非晶相)、ν_(-2-去卷积-聚四氟乙烯非晶相)、ν_(-3-去卷积-聚四氟乙烯非晶相)、ν_(-4-去卷积-聚四氟乙烯非晶相)、ν_(-5-去卷积-聚四氟乙烯非晶相)、ν_(-6-去卷积-聚四氟乙烯非晶相)和ν_(-7-去卷积-聚四氟乙烯非晶相)。聚四氟乙烯非晶相结构大约为5%~10%。随着测定温度的升高,聚四氟乙烯非晶相结构主要官能团对应的吸收频率及强度都有一定的改变。为研究重要的纺织材料聚四氟乙烯非晶相结构及热变性建立一个方法学,具有重要的应用研究价值。Mid-infrared(MIR)spectroscopy(including one-dimensional MIR spectroscopy,second-order derivative MIR spectroscopy,fourth-order derivative MIR spectroscopy and deconvolution MIR spectroscopy)was used to study the amorphous phase structure of polytetrafluoroethylene.A semi quantitative study of the amorphous phase structure of polytetrafluoroethylene was carried out by using one-dimensional MIR spectroscopy multiplication spectrum and deconvolution MIR spectroscopy multiplication spectrum.The temperature-dependent deconvolution MIR spectroscopy further investigated the thermal denaturation of the amorphous phase structure of polytetrafluoroethylene.The experiment finds that the infrared absorption modes of the amorphous phase structure of polytetrafluoroethylene mainly include:ν_(-1-deconvolution-polytetrafluoroethylene amorphous phase),ν_(-2-deconvolution-polytetrafluoroethylene amorphous phase),ν_(-3-deconvolution-polytetrafluoroethylene amorphous phase),ν_(-4-deconvolution-polytetrafluoroethylene amorphous phase),ν_(-5-deconvolution-polytetrafluoroethylene amorphous phase),ν_(-6-deconvolution-polytetrafluoroethylene amorphous phase) and ν_(-7-deconvolution-polytetrafluoroethylene amorphous phase).The amorphous structure of polytetrafluoroethylene is approximately 5%-10%.As the measurement temperature increases,the absorption frequency and intensity of the main functional groups in the amorphous phase structure of polytetrafluoroethylene change to a certain extent.This paper establishes a methodology for studying the amorphous structure and thermal denaturation of important textile material polytetrafluoroethylene,which has important application research value.

关 键 词：中红外光谱 聚四氟乙烯 非晶相 结构 

分 类 号：TS102[轻工技术与工程—纺织工程] TQ317[轻工技术与工程—纺织科学与工程] O657.33[化学工程—高聚物工业]