Swelling behavior of semi-interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylamide-co-sodium methacrylate)

Murali Yallapu, P. S.Keshava Murthy, J. Sreeramulu, K. Mohana Raju

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Interpenetrating polymer network (IPN) hydrogels based on poly(vinyl alcohol) (PVA) and poly(acryl-amide-co-sodium methacrylate) poly(AAm-co-SMA) were prepared by the semi IPN method. These IPN hydrogels were prepared by polymerizing aqueous solution of acrylamide and sodium methacrylate, using ammonium persulphate/N,N,N1,N1- tetramethylethylenediamine(APS/ TMEDA) initiating system and N,N 1-methylene-bisacrylamide (MBA) as a crosslinker in the presence of a host polymer, poly (vinyl alcohol). The influence of reaction conditions, such as the concentration of PVA, sodium methacrylate, crosslinker, initiator, and reaction temperature, on the swelling behavior of these IPNs was investigated in detail. The results showed that the IPN hydrogels exhibited different swelling behavior as the reaction conditions varied. To verify the structural difference in the IPN hydrogels, scanning electron microscopy (SEM) was used to identify the mor phological changes in the IPN as the concentration of crosslinker varied. In addition to MBA, two other crosslinkers were also employed in the preparation of IPNs to illustrate the difference in their swelling phenomena. The swelling kinetics, equilibrium water content, and water transport mechanism of all the IPN hydrogels were investigated. IPN hydrogels being ionic in nature, the swelling behavior was significantly affected by environmental conditions, such as temperature, ionic strength, and pH of the swelling medium. Further, their swelling behavior was also examined in different physiological bio-fluids.

Original languageEnglish (US)
Pages (from-to)302-314
Number of pages13
JournalJournal of Applied Polymer Science
Volume98
Issue number1
DOIs
StatePublished - Oct 5 2005
Externally publishedYes

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Hydrogels
Interpenetrating polymer networks
Polyacrylates
Swelling
Alcohols
Sodium
Ammonium persulfate
methacrylic acid
Acrylamide
Ionic strength
Amides
Water content
Polymers
Temperature
Scanning electron microscopy
Kinetics
Fluids
Water

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Swelling behavior of semi-interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylamide-co-sodium methacrylate). / Yallapu, Murali; Murthy, P. S.Keshava; Sreeramulu, J.; Raju, K. Mohana.

In: Journal of Applied Polymer Science, Vol. 98, No. 1, 05.10.2005, p. 302-314.

Research output: Contribution to journalArticle

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