天津工业大学学报2016，Vol.35Issue(2)：40-44,5.DOI:10.3969/j.issn.1671-024x.2016.02.008
低分子质量壳聚糖季铵盐改性亚麻织物活性染料染色机理
Reactive dyeing mechanism of flax fabric modified by low molecular weight chitosan quaternary ammonium salts
摘要
Abstract
The flax fabric was modified by low molecular weight chitosan quaternary ammonium salt. The curves of dyeing rate and adsorption isotherm of the modified flax fabric dyed with reactive dyes was drawn and were fitted with statistical models, the related parameter data were calculated. The results showed that the curve of dyeing rate conformed to pseudo-second-order model and pseudo-first-order model fairly. The dyeing adsorption process conformed to non-orientation and multilayer adsorption process. The adsorption isotherm conformed to Langmuir model and Freundlich model fairly. Both orientation absorption and non-orientation adsorption existed in the dyeing process. The dyeing equilibrium absorption capacity and the dyeing affinity decreased as the temperature rose. The dyeing heat was -27.586 kJ/mol, which showed that the dyeing process was exothermal. The dyeing entropy was-0.056 5 kJ/(mol·K), which indicated that the orientation degree of the reactive dyes on the fabric was little.关键词
低分子质量壳聚糖季铵盐/亚麻织物/改性/活性染料染色/染色机理Key words
low molecular weight chitosan quaternary ammonium salt/flax fabric/modification/reactive dyeing/dyeing mechanism分类
轻工纺织引用本文复制引用
姜会钰,吴伟,周青青,董敏..低分子质量壳聚糖季铵盐改性亚麻织物活性染料染色机理[J].天津工业大学学报,2016,35(2):40-44,5.基金项目
湖北省教育厅项目 （）
