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氧化石墨烯在纤维素纤维表面的吸附特性研究
Adsorption Characteristics of Oxidized Graphene on Cellulose Fibers Surface
【摘要】 利用分光光度法探讨pH值和电解质浓度对氧化石墨烯在纤维素纤维上吸附的影响。研究表明:氧化石墨烯在纤维素纤维上的吸附等温线符合朗格缪尔型吸附模型,说明吸附属于单分子层吸附;对热力学参数的计算,吉布斯自由能变小于零,焓变大于零,熵变大于零,说明氧化石墨烯在纤维素纤维上的吸附是一个自发过程;通过探究氧化石墨烯在棉针织物上的吸附过程,验证了上述吸附理论。该研究为纳米尺度功能材料在纺织材料上的复合处理提供了理论基础。
【Abstract】 In this paper, the effects of pH and electrolyte concentration on the adsorption of oxidized graphene on cellulose fibers were investigated using spectrophotometric methods. The results show that the adsorption isotherms of oxidized graphene on cellulose fibers are consistent with the Langermuir-type adsorption model, indicating that the adsorption belongs to monomolecular layer adsorption. For the calculation of thermodynamic parameters, it is found that the Gibbs free energy change is negative, the enthalpy change is positive, and the entropy change is positive as well, indicating that the adsorption of oxidized graphene on cellulose fibers is a spontaneous process.The adsorption process of oxidized graphene on knitted cotton fabrics is investigated to verify the above adsorption theory. This study provides a theoretical basis for the finishing of nano-scale functional materials for textiles.
【Key words】 Oxidized Graphene; Cellulose Fiber; Adsorption Performance; Cotton Knitted Fabric; Thermodynamic Analysis;
- 【文献出处】 针织工业 ,Knitting Industries , 编辑部邮箱 ,2023年03期
- 【分类号】TS195.5
- 【下载频次】92