Abstract
Thermo- and pH-sensitive comb-type graft and semi-IPN hydrogels were prepared by using alginate and poly(N-isopropylacrylamide) (PNIPAAm). Comb-type graft hydrogels are composed of crosslinked alginate network and grafted with PNIPAAm. They exhibited fast pH and thermal responses due to free and mobile graft chains. Comb-type graft hydrogels reached an equilibrium swelling and deswelling states within about 10min. By contrast, semi-interpenetrating polymer network (semi-IPN) hydrogels formed polyelectrolyte complex between carboxyl groups in alginate and amino groups in PNIPAAm-NH2, resulting in a relatively compact structure and slow swelling and deswelling compared with comb-type graft hydrogel. All the hydrogels exhibited a reasonable sensitivity to temperature, pH and ionic strength of the swelling medium.
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.
