Abstract
Binding isotherms of Ca2+ to copolymer gels of acrylamide and acrylate (AA), N-isopropylacrylamide and acrylate (NA), and n-butylacrylate and acrylate (BA) were investigated and were compared with each other for examining the effect of the hydrophobicity of chain on the Ca2+ binding. The highest binding constant and the largest shrinkage in the volume were observed for the BA gel. The counterion condensation theory developed by Manning could not explain the observed binding isotherms. The analysis using the theory for the cooperative binding developed by McGhee and Hippel indicates that the binding to BA gel is more cooperative than those to the others. The present experimental result indicates that the hydrophobic circumstance promotes the Ca2+ binding to carboxylate.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
