Publication:
Equilibrium swelling behavior and elastic properties of polymer-clay nanocomposite hydrogels

dc.contributor.authorABDURRAHMANOĞLU, SUZAN
dc.contributor.authorsAbdurrahmanoglu, Suzan; Can, Volkan; Okay, Oguz
dc.date.accessioned2022-03-12T17:34:31Z
dc.date.available2022-03-12T17:34:31Z
dc.date.issued2008
dc.description.abstractNanocomposite hydrogels were prepared by free-radical polymerization of the monomers acrylamide (AAm), NN-dimethylacrylamide (DMA), and N-iso-propylacrylamide (NIPA) in aqueous clay dispersions at 21 degrees C. Laponite XLS was used as clay nanoparticles in the hydrogel preparation. The hydrogels based on DMA or NIPA monomers exhibit much larger moduli of elasticity compared with the hydrogels based on AAm monomer. Calculations using the theory of rubber elasticity reveal that, in DMA-clay or NIPA-clay nanocomposites, both the effective crosslink density of the hydrogels and the functionality of the clay particles rapidly increase with increasing amount of Laponite up to 10% (w/v). The results suggest that DMA-clay and NIPA-clay attractive interactions are stronger than AAm-clay interactions due to the formation of multiple layers on the nanoparticles through hydrophobic associations. It was also shown that, although the nanocomposite hydrogels do not dissolve in good solvents such as water, they dissolve in dilute aqueous solutions of acetone or poly(ethylene oxide) of molecular weight 10,000 g/mol, demonstrating the physical nature of the crosslink points. (c) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 109: 3714-3724,2008
dc.identifier.doi10.1002/app.28607
dc.identifier.eissn1097-4628
dc.identifier.issn0021-8995
dc.identifier.urihttps://hdl.handle.net/11424/229033
dc.identifier.wosWOS:000257724900036
dc.language.isoeng
dc.publisherWILEY-BLACKWELL
dc.relation.ispartofJOURNAL OF APPLIED POLYMER SCIENCE
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectnanocomposite hydrogels
dc.subjectclay
dc.subjectswelling elasticity
dc.subjectHIGH MECHANICAL STRENGTH
dc.subjectLAPONITE DISPERSIONS
dc.subjectSPATIAL INHOMOGENEITY
dc.subjectLIGHT-SCATTERING
dc.subjectGELATION
dc.subjectGELS
dc.subjectPOLY(N,N-DIMETHYLACRYLAMIDE)
dc.subjectPOLY(N-ISOPROPYLACRYLAMIDE)
dc.titleEquilibrium swelling behavior and elastic properties of polymer-clay nanocomposite hydrogels
dc.typearticle
dspace.entity.typePublication
local.avesis.id5d6628d6-1221-4544-b55f-76439d72b6af
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages11
oaire.citation.endPage3724
oaire.citation.issue6
oaire.citation.startPage3714
oaire.citation.titleJOURNAL OF APPLIED POLYMER SCIENCE
oaire.citation.volume109
relation.isAuthorOfPublicationc4f5249d-7638-47df-be54-950af42ffa85
relation.isAuthorOfPublication.latestForDiscoveryc4f5249d-7638-47df-be54-950af42ffa85

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