Porous poly(2-hydroxyethyl acrylate) hydrogels prepared by radical polymerisation with methanol as diluent

Serrano Aroca, A; Campillo Fernandez, AJ; Gomez Ribelles, JL; Monleon Pradas, M; Gallego Ferrer, G; Pissis, P

dc.contributor.author	Serrano Aroca, A	en
dc.contributor.author	Campillo Fernandez, AJ	en
dc.contributor.author	Gomez Ribelles, JL	en
dc.contributor.author	Monleon Pradas, M	en
dc.contributor.author	Gallego Ferrer, G	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:21:14Z
dc.date.available	2014-03-01T01:21:14Z
dc.date.issued	2004	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16154
dc.subject	Diffusion	en
dc.subject	Porous hydrogels	en
dc.subject	Water sorption	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Dynamic-mechanical spectroscopy	en
dc.subject.other	Xerogel	en
dc.subject.other	Copolymers	en
dc.subject.other	Crosslinking	en
dc.subject.other	Isotherms	en
dc.subject.other	Methanol	en
dc.subject.other	Polymerization	en
dc.subject.other	Porosity	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Sorption	en
dc.subject.other	Hydrogels	en
dc.subject.other	acrylic acid derivative	en
dc.subject.other	ethylene glycol dimethacrylate	en
dc.subject.other	methanol	en
dc.subject.other	poly(2 hydroxyethylacrylate)	en
dc.subject.other	polymer	en
dc.subject.other	solvent	en
dc.subject.other	unclassified drug	en
dc.subject.other	water	en
dc.subject.other	article	en
dc.subject.other	chemical analysis	en
dc.subject.other	cross linking	en
dc.subject.other	density	en
dc.subject.other	desiccation	en
dc.subject.other	dilution	en
dc.subject.other	elasticity	en
dc.subject.other	gas	en
dc.subject.other	hydrogel	en
dc.subject.other	liquid	en
dc.subject.other	polymerization	en
dc.subject.other	porosity	en
dc.subject.other	scanning electron microscopy	en
dc.subject.other	spectroscopy	en
dc.subject.other	synthesis	en
dc.subject.other	polymer science	en
dc.title	Porous poly(2-hydroxyethyl acrylate) hydrogels prepared by radical polymerisation with methanol as diluent	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.polymer.2004.10.033	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.polymer.2004.10.033	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	Dynamic-mechanical and water sorption properties of porous and non-porous hydrogels have been studied as a function of their porosity and crosslinking density. Porous hydrogels with different crosslinking densities were prepared by co-polymerisation of 2-hydroxyethyl acrylate and ethyleneglycol dimethacrylate in solution in methanol. Pores were formed due to the segregation of the solvent from the polymer network during the polymerisation process. The porosity of the samples was observed by scanning electron microscopy. The pores collapse during the drying process after polymerisation but they reopen when the xerogel is immersed in liquid water. Bulk polymer networks with varying crosslinking densities were also synthesised and used as a reference in the analysis of the porous hydrogels. Water sorption from the gas phase and from the liquid phase was studied by means of equilibrium sorption isotherms and immersion experiments, respectively. Dynamic-mechanical spectroscopy conducted on the xerogels shows that the elastic modulus in the rubber-like state highly depends on the amount of solvent used in the polymerisation what is attributed to the presence of discontinuity surfaces in the xerogel although the pores are closed. (C) 2004 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.doi	10.1016/j.polymer.2004.10.033	en
dc.identifier.isi	ISI:000225508100030	en
dc.identifier.volume	45	en
dc.identifier.issue	26	en
dc.identifier.spage	8949	en
dc.identifier.epage	8955	en