Effect of potassium methacrylate content on synthesis, swelling, and diffusion characteristics of acrylamide/potassium methacrylate hydrogels

P. S.Keshava Murthy, Y. Murali Mohan, K. Madhusudhana Rao, K. Mohana Raju, J. Sreeramulu

Research output: Contribution to journalArticle

  • 4 Citations

Abstract

Hydrogels based on acrylamide (AAM) and potassium methacrylate (KMA) were synthesized by simultaneous free radical polymerization in aqueous solution using the redox initiator ammonium persulfate (APS) and N,N′N′- tetramethylethylenediamine (TMEDA) at room temperature. Eight different compositions of KMA hydrogels were prepared at a fixed concentration of N.N′,-methylenebisacrylamide (MBA) or diallyl phthalate (DP) as crosslinking agents. For all the AAM-KMA hydrogels, the percentage of swelling, swelling kinetics, and diffusion characteristics were investigated. It was found that higher swelling percentage values were obtained for hydrogels crosslinked with DP than for the conventional crosslinker MBA. The de-swelling characteristics of hydrogels were also studied in detail. The power law relationship of hydrogels was evaluated in saline solutions. Hydrogels formation was confirmed by IR spectroscopy. The thermal characteristics of these hydrogels were studied by using differential scanning calorimeter (DSC) and thermogravimetric analyzer (TGA) and revealed that MBA crosslinked AAM-KMA hydrogels show higher glass transition temperature (Tg) as well as higher decomposition temperatures (Td) than DP crosslinked AAM-KMA hydrogels. It is further confirmed from the studies that the DP crosslinked hydrogels have good swelling as well as de-swelling and salinity characteristics.

LanguageEnglish (US)
Pages899-916
Number of pages18
JournalInternational Journal of Polymeric Materials and Polymeric Biomaterials
Volume54
Issue number10
DOIs
StatePublished - Oct 1 2005
Externally publishedYes

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Hydrogels
Methacrylates
Acrylamide
diallyl phthalate
Swelling
Potassium
Ammonium persulfate
Free radical polymerization
Calorimeters
Sodium Chloride
Crosslinking
Infrared spectroscopy
Decomposition
Scanning

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Polymers and Plastics

Cite this

Effect of potassium methacrylate content on synthesis, swelling, and diffusion characteristics of acrylamide/potassium methacrylate hydrogels. / Murthy, P. S.Keshava; Mohan, Y. Murali; Rao, K. Madhusudhana; Raju, K. Mohana; Sreeramulu, J.

In: International Journal of Polymeric Materials and Polymeric Biomaterials, Vol. 54, No. 10, 01.10.2005, p. 899-916.

Research output: Contribution to journalArticle

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