화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.41, 82-90, September, 2016
DOI10.1016/j.jiec.2016.07.012  Export Citation
A novel semi-IPN hydrogel: Preparation, swelling properties and adsorption studies of Co (II)
Xiaohong Wang†, Haiqian Hou, Yujun Li, Yingying Wang, Chen Hao†, and Cunwang Ge1
  • School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
  • 1School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
E-mail:,
A range of super-absorbent semi-IPN hydrogels.polyvinyl alcohol/poly (acrylic acid-co-acrylic amide) (PVA-P(AA-co-AM)) were synthesized via free radical polymerization method under ultrasound-assisted condition. L16 (45) orthogonal experiments were designed to optimize the synthesis conditions and the success was characterized by FTIR, SEM and TGA. Swelling capacities were studied in various pH solution and saline solution whose results indicated that pH in solution shows an obvious influence on it and the salt resistance is greater in salt solution of low valence relative to that of high valence. Meanwhile, its swelling behavior was evaluated in water solution, which revealed that the swelling process conformed to the Schott model and the diffusion type was non-Fickian diffusion. Moreover, the adsorption on cobalt (II) from aqueous solutions was also investigated in the paper. The optimumpH value was found close to 4 for the cobalt (II) adsorption and it was discovered that adsorption kinetics and adsorption isotherms for cobalt (II) were in accordance with the pseudo-second-order model and the Freundlich model respectively. Besides, thermodynamic parameters were calculated for the cobalt (II) adsorption and the findings revealed that the adsorption behavior is spontaneous and endothermic.
Keywords:Hydrogels;Swelling behavior;Adsorption;Ultrasound-assisted
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