甲醇蛋白改性粘胶纤维的结构与性能

为提高粘胶纤维的附加值,利用甲醇蛋白与粘胶原液共混制备了甲醇蛋白改性粘胶纤维,并使用凯氏定氮仪、红外光谱仪、扫描电子显微镜、X射线衍射仪和纤维力学性能测试等手段研究了甲醇蛋白改性粘胶纤维性能与结构的关系。结果表明:与普通粘胶纤维相比,甲醇蛋白改性粘胶纤维的结晶度降低,截面异形度略有降低,锯齿型趋势减弱,光泽略有变暗,纤维断裂强度降低,断裂伸长也降低;由于甲醇蛋白的引入可赋予其蛋白纤维的特征,从纤维的红外图谱观察和纤维含氮量测试结果推测已经成功制得了甲醇蛋白改性粘胶纤维。

Structure and properties of methanol protein modified viscose fiber

In order to improve the added value of visscose fiber, viscose fiber modified by methanol protein was prepared by blending methanol protein and viscose concentrate, and its structure and performance were investigated by means of Kjeldahl nitrogen determination apparatus, infrared spectroscopy ( IR ) , scanning electron microscopy ( SEM ) , X?ray diffraction ( XRD ) and fiber mechanical properties experimental methods. The results show that compared with ordinary viscose fiber, the crystallinity of the methanol protein modified viscose fiber decreased, cross section abnormity degree slightly lowered, zigzag trend abates, burnish is slightly darker, fiber fracture strength is reduced, and the elongation at break decreased. The fiber shows characteristics of protein fiber and it can be viewed from the infrared spectra of the fiber and fiber nitrogen content test results that methanol protein modified viscose fiber has been successfully prepared.