腈纶表面接枝大豆蛋白质改性纤维的结构与性能

Structure and Properties of Polyacrylonitrile Fiber Modified by Protein on Its Surface

腈纶经过表面水解、酰氯化和接枝反应等过程可以在表面接枝上大豆蛋白质,制成蛋白质接枝改性腈纶。红外分析和电子显微镜形貌观察表明,蛋白质接枝改性腈纶的表面形成了完整致密的蛋白质表面膜层。蛋白质接枝改性腈纶的超分子结构与普通腈纶相比并没有发生大的变化,而是基本保持了原有腈纶的高序态和低序态共存的结构特征。改性纤维的物理力学性能可以满足纺织后加工及其服用性能要求。

With simple procedures of surface hydrolysis, acidchloride reaction and grafting, the soybean protein can be grafted onto the PAN fiber, and then protein-modified PAN fiber was obtained. The structure and property of the polyacrylonitrile fiber modified by protein on its surface has been studied by physical mechanical property analysis, infrared spectrum, x-ray diffraction and electron microscope. The results show that the surface of PAN fiber is covered by integrated and compact protein overlay film, and the physical mechanical property of modified fiber can satisfy the necessary of textile manufacture and garment applying; the modified fiber has little change on the supermolecular structure of the protein-modified PAN fiber and the original concomitant structure of high and low order still remains.