丝绸2018，Vol.55Issue(3)：21-26,6.DOI:10.3969/j.issn.1001-7003.2018.03.004
氨基芳磺酸染料修饰蚕丝的电荷效应研究
Study on the charge effect of aminoaromatic sulfonic acid dye in silk modification
摘要
Abstract
For the further study of the modification effect on silk fibroin protein by aromatic primary amine compounds found in our previous work, the self-synthesized aminoaromatic sulfonic acid dye was used as the color developing agent to discuss the charge effect after Mannich reaction with silk fibroin protein under the existence of formaldehyde. In this paper, the isoelectric points of degummed silk and the aminoaromatic sulfonic acid dye under the reaction conditions were measuredand analyzed. Besides, the effects of pH, formaldehyde and sodium sulfate on Mannich reaction and modification efficiency were studied. It demonstrated that the highest efficiency appeared when pH was 4. Under this condition,the surface of the degummed silk fabric was positively charged,and aminoaromatic sulfonic acid dye showed negative charge,resulting in remarkable physical adsorption under electrostatic attraction. Meanwhile,the dye bath of weak acid was beneficial to the Mannich reaction. Sodium sulfate retarded dyeing (pH≤4) or accelerated dyeing (pH≥5),and made a little difference on the modification efficiency of the Mannich reaction.关键词
蚕丝/等电点/电荷效应/氨基芳磺酸/Mannich反应修饰Key words
silk/isoelectric point/charge effect/aminoaromatic sulfonic acid/Mannich reaction modification分类
轻工纺织引用本文复制引用
赵玲,崔志华,陈维国,江华,高普,孙岩峰..氨基芳磺酸染料修饰蚕丝的电荷效应研究[J].丝绸,2018,55(3):21-26,6.基金项目
国家自然科学基金项目(51673176) （51673176）
浙江省自然科学基金项目(LY16B060006) （LY16B060006）
