改性纤维素酶对有机颜料的分散性  

Dispersibility of organic pigments by modified cellulase

作　　者：宋佳丽 郝龙云 SONG Jiali;HAO Longyun(College of Textile&Clothing,Qingdao University,Qingdao 266071,China;Collaborative Innovation Center for Eco-textiles Co-built by Province and Ministry,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学纺织服装学院,山东青岛266071 [2]青岛大学生态纺织省部共建协同创新中心,山东青岛266071

出　　处：《印染》2024年第5期12-15,20,共5页China Dyeing and Finishing

基　　金：国家自然科学基金(52073150)。

摘　　要：利用油酰氯对纤维素酶(EG)进行酰化改性,得到改性纤维素酶(MEG),并将其应于制备颜料分散体。通过FTIR方法表征了MEG对颜料的吸附改性作用,并利用紫外可见吸收光谱、动力学不稳定性、粒径以及Zeta电位测试分析了MEG质量分数、超声处理条件对分散效果的影响。结果表明,随着MEG质量分数的提高,以及超声处理时间和功率的增大,颜料分散性能得到增强。此外,测定了颜料分散体在不同条件下的稳定性,结果表明电解质的性质以及温度条件都会对颜料稳定性产生显著影响。In this study,oleyl chloride is used to acylate cellulase(EG)to obtain modified cellulase(MEG),which is used to prepare pigment dispersions.The adsorption performance of MEG on pigment is characterized by FT⁃IR,and the effects of MEG concentration and ultrasonication conditions on the dispersion are analyzed by us⁃ing ultraviolet-visible absorption spectroscopy,dynamical instability,particle size and Zeta potential.The re⁃sults show that properties of pigment dispersion systems can be enhanced by the increase of MEG concentra⁃tion as well as the sonication time and power.In addition,the stability of the pigment dispersions under differ⁃ent conditions is measured.The results show that the electrolyte properties and the temperature have a signifi⁃cant effect on the stability of the pigment dispersions.

关 键 词：纤维素酶 改性 颜料 分散 

分 类 号：TS193.21[轻工技术与工程—纺织化学与染整工程]