کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1386491 | 982511 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and adsorption property of chitosan beads bearing β-cyclodextrin cross-linked by 1,6-hexamethylene diisocyanate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
Glutaraldehyde activated chitosan beads bearing β-cyclodextrin cross-linked by 1,6-hexamethylene diisocyanate was prepared, and characterized by IR, XRD and TG-DTA. Its adsorption property of hydroquinone was investigated by spectrophotometry. The adsorption capacity increases with increasing temperature and pH value. The adsorption process can be better simulated by Freundlich isotherm equation (R2>0.996R2>0.996) and the thermodynamic parameters such as free energy change, enthalpy change and entropy change were calculated. The adsorption of hydroquinone on chitosan beads bearing β-cyclodextrin cross-linked by 1,6-hexamethylene diisocyanate is a spontaneous, endothermic and random process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 72, Issue 3, 16 May 2008, Pages 456–461
Journal: Carbohydrate Polymers - Volume 72, Issue 3, 16 May 2008, Pages 456–461
نویسندگان
Fei Zha, Shaoguang Li, Yue Chang,