Inverse suspension polymerization of poly(methacrylic acid-co-partially neutralized acrylic acid) superabsorbent hydrogels: synthesis and water uptake behavior

Authors: Bajpai, S.K.; Bajpai, M.; Sharma, Leena

Source: Designed Monomers & Polymers, Volume 10, Number 2, 2007 , pp. 181-192(12)

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Abstract:

Superabsorbent poly(methacrylic acid-co-partially neutralized acrylic acid) hydrogels have been prepared by inverse suspension polymerization, using SPAN 80 as dispersant, heptane as the organic phase, N,N′-methylene bisacrylamide as the cross-linker and potassium persulphate as initiator. The water uptake behavior has been analyzed as a function of amount of cross-linker, concentration of dispersant, stirring rate, synthesis temperature and particle size of gels. Their swelling behavior was also studied in salt solutions, Various types of diffusion coefficients and activation energy for swelling process were also evaluated.

Keywords: INVERSE SUSPENSION POLYMERIZATION; SUPERABSORBENT HYDROGEL; CROSS-LINKER; DIFFUSION

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156855507780378285

Affiliations: 1: Polymer Research Laboratory, Department of Chemistry, Government Model Science College, Jabalpur (M.P.), India

Publication date: 2007-03-01