胶原蛋白改性亚麻纱线结构及性能研究

Structure and Property Research of Collagen Protein Modified Flax Yarn

研究胶原蛋白改性亚麻纱线的结构及性能。先采用高碘酸钠对亚麻纱线进行选择性氧化生成双醛基,然后经亚硫酸氢钠磺化处理得到磺化亚麻纱线,再利用明胶蛋白溶液对磺化亚麻纱线进行接枝改性处理。采用红外光谱、X-射线衍射、SEM等方法对改性亚麻纱线的结构进行表征与分析。测试了改性亚麻纱线的断裂强力、断裂伸长率和回潮率等性能指标。结果表明:磺化亚麻纱线和明胶蛋白在亚麻纤维的非结晶区以化学键结合;不同的明胶溶液浓度对磺化亚麻纱线的接枝率有一定的影响,明胶蛋白接枝率在0～10%(质量分数)范围内时,亚麻纱线断裂强力基本不变,回潮率随着接枝率的增大略有增加,断裂伸长率随着接枝率的增大有较明显的提高。

Structure and property of collagen protein modified flax yarn were researched. Flax yarn was selectively oxidized with sodium periodate to generate double aldehyde groups, treated with hydrdrogen sulfite to generate sulfonated flax yarn and then was grafted with gelatin protein solution. The structure of modified flax yarn was characterized and analyzed by FT-IR,X-ray diffraction and SEM. Breaking strength,breaking elongation and moisture regain of modified flax yarn were tested. The result shows that the sulfonated flax yarn and gelatin protein are combined with chemical bond in non-crystalline area. Different concentration of gelatin solution influences grafting rate of sulfonated flax yarns in certain degree. When grafting rate of gelatin protein is in 0 to 10% （ mass fraction） ,breaking strength of the flax yarn is basically the same, As growth of the grafting rate, moisture regain would be increased slightly, breaking elongation is obviously improved.