摘要
为实现蚕丝产品中烷基酚聚氧乙烯醚(APEO)的高效监控检测,研究蚕丝纤维对辛基酚聚氧乙烯醚(OPEO)的吸附特性。结果表明,OPEO在蚕丝纤维上的吸附符合Langmuir模型,吸附动力学符合拟二级动力学模型,并且初始浓度越大,平衡速率常数越小,到达平衡的时间越长。OPEO溶液的温度越高,平衡速率常数越大。毛孔内扩散是控制OPEO在蚕丝纤维上吸附的一个因素,但不是唯一的因素。OPEO在蚕丝纤维上的吸附活化能为25.69 kJ/mol,活化能远小于化学吸附所需的83.72 kJ/mol,说明OPEO在蚕丝纤维上的吸附是以物理吸附为主。
Silk fiber′s adsorption of octylphenol ethoxylates（OPEO） was studied in order to realize high efficiency monitoring and detection of alkylphenol ethoxylates（APnEO） in silk products.The results showed that silk fiber′s adsorption of OPEO fitted Langmuir model,and the adsorption process could be well described by the pseudo-second-order kinetic model.And higher the initial OPEO concentration,smaller the balancing rate constant was,and longer the balancing time was;higher the temperature of OPEO solution,greater the balancing rate constant was.The diffusion into the microspore is a main factor for controlling the silk fiber adsorption of OPEO,but it is not the only factor.The adsorption activation energy is 25.69 kJ/mol in silk fiber of OPEO,which is far lower than that required by chemical adsorption,that is,83.72 kJ/mol.It indicates that physical adsorption dominates the silk fiber absorption of OPEA.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2011年第9期64-68,共5页
Journal of Textile Research
基金
国家质量监督检验检疫总局科研项目(2008IK100)
关键词
OPEO
蚕丝纤维
吸附动力学
吸附活化能
吸附等温线
OPEO
silk fiber
adsorption kinetics
adsorption activation energy
adsorption isotherms
