鸭绒变温红外光谱研究

Variable Temperature Infrared Spectroscopy Study of Eiderdown

采用变温红外光谱技术(包括:变温一维红外光谱和变温二阶导数红外光谱)开展了鸭绒结构研究。研究发现:鸭绒存在着CH3不对称伸缩振动模式(νas CH3),CH3对称伸缩振动模式(νs CH3),CH2不对称伸缩振动模式(νas CH2),CH2对称伸缩振动模式(νs CH2),酰胺Ⅰ带红外吸收模式(νamide-Ⅰ),酰胺Ⅱ带红外吸收模式(νamide-Ⅱ)和酰胺Ⅲ带红外吸收模式(νamide-Ⅲ)。研究发现:在303K^393K的温度范围内,鸭绒的热稳定性较差,并进一步研究其热变机理。本文拓展了变温红外光谱技术在天然毛纺织纤维热稳定性研究的范围。

The eiderdown structure research was carried out by variable temperature infrared spectroscopy technology(including variable temperature one-dimensional infrared spectroscopy and variable temperature second derivative infrared spectroscopy）. The results showed that the eiderdown had the following modes such as CH3 asymmetrical stretching vibration mode(νas CH3）,CH3 symmetrical stretching vibration mode(νs CH 3）,CH2 asymmetrical stretching vibration mode(νas CH2）,CH2 symmetrical stretching vibration mode(νs CH 2）,amide Ⅰbelt infrared absorption mode(νamide-Ⅰ）,amide Ⅱ belt infrared absorption mode（νamide-Ⅱ） and amide Ⅲ belt infrared absorption mode(νamide-Ⅲ）. The thermal stability of eiderdown was relatively poor in 303 K ~ 393 K,and its thermal mechanism was further explained. The application scope of variable temperature infrared spectroscopy in the research of thermal stability of natural wool textile fiber was expanded.