Iranian Journal of Polymer Science and Technology 10163255 23 2 2013 01 28 An Alcogel Based on Poly(2-acrylamido-2-methylpropane sulphonic acid) and the Effect of Neutralization Degree on its Swelling, Thermal and Mechanical Properties An Alcogel Based on Poly(2-acrylamido-2-methylpropane sulphonic acid) and the Effect of Neutralization Degree on its Swelling, Thermal and Mechanical Properties 145 153 654 10.22063/jipst.2013.654 FA G. Bagheri Marandi A. Azizi K. Kabiri M.J. Zohuriaan-Mehr H. Boohendi Journal Article 2013 01 28 Cross-linked polymeric organogels have attracted much attention in recent years. Most synthesized organogels are based on low molecular weight or denderitic materials. The study focuses on the preparation of an alcohol absorbent organogel based on 2-acrylamido-2-methylpropane sulphonic acid (AMPS) through cross-linking polymerization. Polyethylene glycol diacrylate-400 and ammonium persulphate were used as crosslinker and thermal initiator, respectively. Neutralization of acid groups increases swelling in superabsorbents. In this study, the effect of neutralization degree (N.D) on alcogel swelling was studied. The absorbency in alcohols and water are unexpectedly reduced with increased N.D. Also, the effect of N.D on thermal, mechanical and rheological properties was investigated, and found that increase in N.D leads to increased glass transition temperature, thermal stability and storage modulus. Cross-linked polymeric organogels have attracted much attention in recent years. Most synthesized organogels are based on low molecular weight or denderitic materials. The study focuses on the preparation of an alcohol absorbent organogel based on 2-acrylamido-2-methylpropane sulphonic acid (AMPS) through cross-linking polymerization. Polyethylene glycol diacrylate-400 and ammonium persulphate were used as crosslinker and thermal initiator, respectively. Neutralization of acid groups increases swelling in superabsorbents. In this study, the effect of neutralization degree (N.D) on alcogel swelling was studied. The absorbency in alcohols and water are unexpectedly reduced with increased N.D. Also, the effect of N.D on thermal, mechanical and rheological properties was investigated, and found that increase in N.D leads to increased glass transition temperature, thermal stability and storage modulus. http://jips.ippi.ac.ir/article_654_18d885b3f2f47e08b780a0beb8ada7dc.pdf