کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5157653 | 1500596 | 2017 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphorylation of chitosan/HEMA interpenetrating polymer network prepared by γ-radiation for metal ions removal from aqueous solutions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Phosphorylation of chitosan/HEMA interpenetrating polymer network prepared by γ-radiation for metal ions removal from aqueous solutions Phosphorylation of chitosan/HEMA interpenetrating polymer network prepared by γ-radiation for metal ions removal from aqueous solutions](/preview/png/5157653.png)
چکیده انگلیسی
Interpenetrating polymer network (IPN) hydrogels, based on chitosan (CS) and 2-hydroxyethyl methacrylate (HEMA), have been prepared by γ-radiation followed by chemical modification via phosphorylation reaction and used for adsorption of Ca(II), Cu(II) and Zn(II) ions from their aqueous solutions. The gel content (%) increases with increasing the HEMA concentration. The maximum swelling (%) observed at the ratio (70/30) (CS/HEMA). CS/pHEMA IPN showed a higher thermal stability than CS. The phosphorylated hydrogel, Phos-(CS/pHEMA), characterized by XRD, EDS, SEM, DSC and TGA techniques. FT-IR spectra before and after adsorption of metal ions have been studied. Factors affecting the maximum adsorption capacity were also investigated. The maximum adsorption capacity using 0.01 g Phos-(CS/pHEMA) was 66.3, 57.6 and 48.7 (mg/g) for Cu(II), Zn(II) and Ca(II) ions, respectively. The adsorption isotherms were simulated by Langmuir and Freundlich models and the adsorption kinetics were simulated by the pseudo-first-order and pseudo-second-order kinetics. The adsorption follows Langmuir models and pseudo-second order. The IPN hydrogels showed effective adsorption of the three metal ions from aqueous solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 162, 15 April 2017, Pages 16-27
Journal: Carbohydrate Polymers - Volume 162, 15 April 2017, Pages 16-27
نویسندگان
Ahmed M. Elbarbary, Mohamed Mohamady Ghobashy,