Semi-IPNs of starch and poly(acrylamide-co-sodium methacrylate)

Preparation, swelling and diffusion characteristics evaluation

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

Research output: Contribution to journalArticle

102 Citations (Scopus)

Abstract

Semi-interpenetrating polymer network (IPN) hydrogels composed of starch and random copolymer of poly(acrylamide-co-sodium methacrylate) [poly(AAm-co-NMA)] were prepared by polymerizing an aqueous solution of acrylamide (AAm), sodium methacrylate (NMA) using ammonium persulphate (APS)/N,N,N1,N1-tetramethylethylenediamine (TMEDA) as redox initiating system in presence of a crosslinker and starch solution. IR spectroscopy was used to identify the presence of different repeating units in the IPN networks. The swelling and diffusion characteristics, such as initial swelling rate (ri), swelling rate constant (ks), equilibrium swelling ratio (Seq), diffusion constant (n) and diffusion coefficients (D) were evaluated for different semi-IPN hydrogels prepared under various formulations. For better understanding of network structure formation of these semi-IPNs, three different crosslinkers namely, N,N-methylenebisacrylamide (MBA), 1,4-butanediol diacrylate (BDDA) and diallyl phthalate (DP) were employed. Further, the swelling pattern of semi-IPN hydrogels was studied in different physiological, pH and ionic/salt solutions and showed great responsiveness due to their ionic character. The morphological features of these IPNs were observed using scanning electron microscopy (SEM).

Original languageEnglish (US)
Pages (from-to)1482-1493
Number of pages12
JournalReactive and Functional Polymers
Volume66
Issue number12
DOIs
StatePublished - Dec 1 2006
Externally publishedYes

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Acrylamide
Polyacrylates
Starch
Interpenetrating polymer networks
starch
swelling
Hydrogels
Swelling
Polymers
Sodium
sodium
polymer
diallyl phthalate
Ammonium persulfate
Electron Scanning Microscopy
Oxidation-Reduction
phthalate
Spectrum Analysis
Salts
Infrared spectroscopy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Biochemistry
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Semi-IPNs of starch and poly(acrylamide-co-sodium methacrylate) : Preparation, swelling and diffusion characteristics evaluation. / Murthy, P. S.Keshava; Yallapu, Murali; Sreeramulu, J.; Raju, K. Mohana.

In: Reactive and Functional Polymers, Vol. 66, No. 12, 01.12.2006, p. 1482-1493.

Research output: Contribution to journalArticle

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