摘要
对于有关文献报道的常温下阳离子表面活性剂在羊毛纤维上吸附的实验数据,用液/固吸附计量置换模型(SDM-A)研究了线性吸附参数βα和解吸参数q/z.由这些线性参数不仅成功地解释了加盐效应及碳氢链长对于吸附性质的影响事实,而且依据SDM-A的热力学计算出不同吸附体系的吸附亲和能、解吸能及置换吸附总过程的自由能,以便认识吸附机理的细节.
The linear adsorption and desorption parameters,βα and q/z,were studied by the Stoichmetric Displacement Model for the Adsorption (SDMA)for the experimental data reported in the literaturefor the adsorptions of cationic surfactants onto wool fibers at 25℃. With these parameters, the facts that salt addition and C-H chain length affect adsorption properties were successfully explained,and the Gibbs free energies of adsorption,desorption and whole displacement adsorption process for the different adsorption systems were calculated respectively according to the thermodynamics of SDMA,so that adsorption mechanism in detail could be recognized.
出处
《纺织高校基础科学学报》
CAS
2002年第4期321-325,共5页
Basic Sciences Journal of Textile Universities
基金
陕西省自然科学基金资助项目(97H15)
关键词
阳离子表面活性剂
羊毛纤维
染色
助剂
吸附
计量置换模型
liquid/solid adsorption
wool
cationic surfactants
stoichiometric displacement model for adsorption
fractions of Gibbs free energy
