1944-7450/asset/EP_centre.gif?v=1&s=54597eced499e80b69e1920b721512cc914c8eb4)
Remediation/Treatment
Teflon scrap based cation exchanger by radiation grafting: Process parameter standardization and characterization
Article first published online: 22 FEB 2011
DOI: 10.1002/ep.10533
Copyright © 2011 American Institute of Chemical Engineers (AIChE)
Additional Information
How to Cite
Chaudhari, C.V., Paul, J., Panicker, L., Dubey, K.A., Kumar, V., Goel, N.K., Bhardwaj, Y.K. and Sabharwal, S. (2012), Teflon scrap based cation exchanger by radiation grafting: Process parameter standardization and characterization. Environ. Prog. Sustainable Energy, 31: 77–88. doi: 10.1002/ep.10533
Publication History
- Issue published online: 12 JAN 2012
- Article first published online: 22 FEB 2011
- Abstract
- Article
- References
- Cited By
Keywords:
- teflon scrap;
- acrylic acid;
- radiation;
- grafting;
- surface energy
Abstract
High-energy gamma radiation from 60Co-gamma radiation source has been used to covalently link acrylic acid to teflon by mutual radiation grafting technique. Effect of various experimental parameters viz, dose, dose rate, monomer concentration, backbone thickness effect of additives on grafting extent was investigated in order to optimize the conditions for grafting acrylic acid onto teflon to optimum levels. The grafting extent decreased with increasing dose rate and thickness of the substrate while it increased with concentration of acrylic acid and optimum concentration of Mohr's salt. The grafted product was characterized for grafting yield, surface morphology, bulk morphology, and crystallinity change. The SEM studies indicate significant difference in bulk and interface due to change in thickness of the teflon backbone. Dynamic contact angle measurement studies of the grafted and radiation treated teflon showed that initial grafting as well as radiation treatment of teflon enhances its hydrophilicity. © 2011 American Institute of Chemical Engineers Environ Prog, 2012