Adsorption of CO2+ by stylene-g-polyethylene membrane bearing sulfonic acid groups modified by radiation-induced graft copolymerization

✍ Scribed by Seong-Ho Choi; Young Chang Nho

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 221 KB
• Volume: 71
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990328)71:13<2227::aid-app13>3.0.co;2-s

✦ Synopsis

Cation-exchange hollow fiber membrane was prepared by radiation-induced grafting polymerization of styrene onto polyethylene hollow fiber membrane and its sulfonation. Adsorption characteristics for the cation-exchange membranes are examined when the solution of Co 2ϩ permeates across the cation-exchange fiber membrane. The maximum grafting peak was obtained from 70% styrene concentration at 50°C. The degree of grafting (%) was enhanced with additives such as H 2 SO 4 and divinylbenzene. The content of OSO 3 H groups ranged from 2 to 5 mmol g Ϫ1 with chlorosulfonic acid (ClSO 3 H) in dichloroethane, from 0.5 to 6 mmol g Ϫ1 with ClSO 3 H in H 2 SO 4 , respectively. The adsorption of Co 2ϩ by the cation-exchange membranes increased with increasing OSO 3 H content.