Preparation, characterization, and property testing of condensation-type silicone/montmorillonite nanocomposites

Voulomenou, A; Tarantili, PA

dc.contributor.author	Voulomenou, A	en
dc.contributor.author	Tarantili, PA	en
dc.date.accessioned	2014-03-01T01:34:21Z
dc.date.available	2014-03-01T01:34:21Z
dc.date.issued	2010	en
dc.identifier.issn	0021-8995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20705
dc.subject	Mechanical properties	en
dc.subject	Nanocomposites	en
dc.subject	Organoclay	en
dc.subject	Polysiloxanes	en
dc.subject	Thermal properties	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Chemical change	en
dc.subject.other	Crosslinks	en
dc.subject.other	Crystallinities	en
dc.subject.other	Crystallographic morphology	en
dc.subject.other	Experimental studies	en
dc.subject.other	Fourier transform infrared	en
dc.subject.other	Glass transition temperature	en
dc.subject.other	Nanofiller	en
dc.subject.other	Organically modified montmorillonite	en
dc.subject.other	Polysiloxanes	en
dc.subject.other	Property-testing	en
dc.subject.other	Reinforced elastomers	en
dc.subject.other	Silicone elastomers	en
dc.subject.other	Silicone rubber	en
dc.subject.other	Solvent resistance	en
dc.subject.other	Structural parameter	en
dc.subject.other	Thermal properties	en
dc.subject.other	Clay minerals	en
dc.subject.other	Crosslinking	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Dynamic analysis	en
dc.subject.other	Dynamic mechanical analysis	en
dc.subject.other	Elastomers	en
dc.subject.other	Fillers	en
dc.subject.other	Fourier transforms	en
dc.subject.other	Glass transition	en
dc.subject.other	Nanocomposites	en
dc.subject.other	Organic solvents	en
dc.subject.other	Organoclay	en
dc.subject.other	Rubber	en
dc.subject.other	Silicate minerals	en
dc.subject.other	Silicones	en
dc.subject.other	Tensile strength	en
dc.subject.other	Tensile testing	en
dc.subject.other	Thermodynamic properties	en
dc.subject.other	Thermogravimetric analysis	en
dc.subject.other	Toluene	en
dc.subject.other	Mechanical properties	en
dc.title	Preparation, characterization, and property testing of condensation-type silicone/montmorillonite nanocomposites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/app.31648	en
heal.identifier.secondary	http://dx.doi.org/10.1002/app.31648	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Nanocomposites (NCs) of silicone rubber and organically modified montmorillonite (OMMT) nanoparticles were prepared and characterized. It was shown that OMMT loadings of 2 and 3.5 parts per hundred resin/filler per weight (phr) produced exfoliation or delamination hybrids, whereas at a concentration of 5 phr, the filler seemed to retain its original crystallographic morphology, and the system shifted to an ordinary reinforced elastomer. Fourier transform infrared analysis, differential scanning calorimetry, and thermogravimetric analysis testing were performed for characterization and showed no effect of the nanofiller on the structural parameters of the composites, with the exception of a reduction in the crystallinity. Dynamic mechanical analysis revealed an increase in the glass-transition temperature (T-g) at OMMT concentrations of 2 and 3.5 phr, whereas at 5 phr, T-g dropped again. Finally, mechanical testing showed an improvement in the tensile strength and stiffness, whereas improved solvent resistance was recorded by swelling experiments in toluene. This experimental study allowed us to explore the range where the OMMT filler produced NCs with silicone elastomers and, furthermore, showed that the incorporation of OMMT into silicone rubber did not introduce any chemical changes but increased the density of crosslinks; this led to a loss of crystallinity, an increase in T-g, and a significant improvement in the tensile properties. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 2521-2529, 2010	en
heal.publisher	JOHN WILEY & SONS INC	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/app.31648	en
dc.identifier.isi	ISI:000282840900005	en
dc.identifier.volume	118	en
dc.identifier.issue	5	en
dc.identifier.spage	2521	en
dc.identifier.epage	2529	en