高碘酸氧化粘胶长丝接枝蚕蛹蛋白的研究

 在pH值为5.0、温度为30℃、HIO3用量为0.08 g/g粘胶长丝条件下,氧化粘胶长丝2 h后进行接枝反应,其蛹蛋白接枝率为35.1%。接枝蛹蛋白粘胶丝在温度为30℃、pH值为4.0时用10%乙二醛交联3 h,获得乳白色交联接枝蛹蛋白粘胶丝,其蛹蛋白含量为5.24%,单根纤维断裂强力为2.9 N,仅比粘胶长丝降低8%,在pH值分别为3.5的乙酸和9.5的NaHCO3中无蛹蛋白溶出。红外光谱分析指出,交联接枝蛹蛋白粘胶丝具有西佛碱的特征吸收峰,经甲基红染色处理后颜色鲜艳。

Pupa protein silk grafted on viscose filament yarn in HIO3 media

Grafting of pupa protein on oxidative viscose filament yarn was carried out with HIO3at pH value= 5.0,30℃for 2 h.The dosage of HIO3was 0.08 g/g viscose filament yarn.Its grafting percentage was 35.1%.The cross-linking treatment of the grafted silk was conducted with 10% glyoxal at 30℃,pH=4.0 for 3 h,thereby obtained milk white grafted silk with pupa protein content of 5.24% and single fiber breaking strength of 2.9 N,that is only 8% lower than that of viscose filament yarn.No pupa protein released in acetic acid or in NaHCO3solution with pH value= 3.50 or 9.50 respectively.Infrared spectrum analysis showed that the grafted silk has a special absorption of Schiff bases and has a brilliant shade when dyed with methyl red.