caa a22 4500 378903489 CHVBK 20180305123524.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/epoly.2004.4.1.538 doi (NATIONALLICENCE)gruyter-10.1515/epoly.2004.4.1.538 Gel formation in frontal polymerization of 2-hydroxyethyl methacrylate [Elektronische Daten] [Narahari S. Pujari, Avinash R. Vishwakarma, Avinash R. Vishwakarma, Mayuresh K. Kelkar, Surendra Ponrathnam] Frontal polymerization of 2-hydroxyethyl methacrylate was investigated to study the effect of type and concentration of initiator, solvent and diluent on the existence of a front, on front velocity as well as front temperature. A significant effect of the type of initiator and its concentration was recorded. Poly(2-hydroxyethyl methacrylate) (PHEMA) was obtained predominantly as a gel. The different gels were evaluated for water and cyclohexane gain and porosity, and the mechanism of gel formation is discussed. Amongst the three diluents used (silica gel, β- cyclodextrin and silica sol), gel formation was highest in the presence of silica sol (≈ 42%). Pore dimensions were less than 15 nm and pore size distribution was narrow. PHEMA networks showed significantly higher water regain due to swelling than attributed to the pore volume as estimated by mercury porosimetry or cyclohexane regain. Kinetics of the equilibrium swelling ratio was studied. © 2013 by Walter de Gruyter GmbH & Co. Pujari Narahari S. Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut Vishwakarma Avinash R. Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut Kelkar Mayuresh K. Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut Ponrathnam Surendra Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut e-Polymers De Gruyter 4/1(2004-12-01), 538-547 2197-4586 4:1<538 2004 4 epoly https://doi.org/10.1515/epoly.2004.4.1.538 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/epoly.2004.4.1.538 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pujari Narahari S. Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut NATIONALLICENCE 700 1- Vishwakarma Avinash R. Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut NATIONALLICENCE 700 1- Kelkar Mayuresh K. Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut NATIONALLICENCE 700 1- Ponrathnam Surendra Polymer Science and Engineering Unit, Chemical Engineering and Process Development Division, National Chemical Laboratory, Pashan Road, Pune 411008, India; Fax +91-20-25893041 aut NATIONALLICENCE 773 0- e-Polymers De Gruyter 4/1(2004-12-01), 538-547 2197-4586 4:1<538 2004 4 epoly CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter