Characterizations of wool fibers were performed with FTIR testing technology for two categories of TM -Fine wool, stretched wool fibers, i.e., the OPTIM and the stretched wool processed on TJGD-ERDOS 02 stretching equipment, developed at College of Textile Engineering, Tianjin Polytechnic University, Tianjin, China. It was observed that the two types of stretched wool fibers could be characterized by the IR -1 and 1510 ~ transmittance peaks at 1620 ~ 1630 cm -1 . It was evidenced that upon stretching the 1520 cm secondary structure of the wool fibers transformed from alpha helix, the typical secondary structure of raw wool, to beta pleated sheet, the typical secondary structure of native silk, which was supported by the change in cross-sectional morphology and stress-strain curve.
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机译：用FTIR测试技术对两种类型的TM-细羊毛，拉伸的羊毛纤维（即OPTIM和在TJGD-ERDOS 02拉伸设备上加工的拉伸羊毛）进行了表征，该拉伸设备由天津工业大学纺织工程学院开发，中国天津。观察到两种拉伸羊毛纤维的特征在于在1620〜1630 cm -1处的IR -1和1510〜透射峰。有证据表明，拉伸1520厘米后，羊毛纤维的二级结构从α螺旋（原毛的典型二级结构）转变为β褶皱片（天然丝的典型二级结构）。断面形貌和应力应变曲线。
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