Poly(vinyl alcohol) Based pH Responsive Semi-IPN Hydrogels: A Comparative Swelling Investigation
Titel:
Poly(vinyl alcohol) Based pH Responsive Semi-IPN Hydrogels: A Comparative Swelling Investigation
Auteur:
Sambasivudu, K. John, K. Murthy, P. S. Keshava Mani, Y. Mohan, Y. Murali Sreeramulu, J. Raju, K. Mohana
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 56 (2007) nr. 11 pagina's 1099-1111
Jaar:
2007-11
Inhoud:
The semi-interpenetrating polymer network (IPN) hydrogels composed of poly(vinyl alcohol) (PVA) and random copolymers of poly(acrylamide-co-sodium methacrylate), poly(AAm-co-NMA); poly(acrylamide-co-potassium methacrylate), poly(AAm-co-KMA); poly(acrylamide-co-maleic acid), poly(AAm-co-MA) were prepared by conventional co-polymerization employing ammonium persulphate (APS)/N,N,N1,N1-tetraethylmethylenediamine (TMEDA) as redox initiating system in presence of N,N1-methylenebisacrylamide (MBA) as a crosslinker. The swelling behavior of these semi-IPN hydrogels were compared in detail in various swelling media, including different pH, salt, and biological fluids.