Poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)]/layered double hydroxide nanocomposites

dc.creatorDagnon, KL
dc.creatorChen, HH
dc.creatorLnnocentini-Mei, LH
dc.creatorD'Souza, NA
dc.date2009
dc.dateFEB
dc.date2014-11-16T22:07:04Z
dc.date2015-11-26T17:27:00Z
dc.date2014-11-16T22:07:04Z
dc.date2015-11-26T17:27:00Z
dc.date.accessioned2018-03-29T00:14:09Z
dc.date.available2018-03-29T00:14:09Z
dc.identifierPolymer International. John Wiley & Sons Ltd, v. 58, n. 2, n. 133, n. 141, 2009.
dc.identifier0959-8103
dc.identifierWOS:000263014700003
dc.identifier10.1002/pi.2503
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/70662
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/70662
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/70662
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1284688
dc.descriptionBACKGROUND: The thermomechanical performance of poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) is associated with its crystallization. Enhanced nucleation using a stearate-functionalized synthetic layered double hydroxide (LDH) presents a potential solution. RESULTS: PHBV crystallization varied with concentration of LDH. At lower LDH concentration, thermal history-induced cold crystallization was present. The extent of this order-disorder transition decreased with increasing LDH concentration and was completely eliminated at 7 wt% LOH. PHBV did not have a melt recrystallization peak but the introduction of LDH resulted in an increasingly pronounced melt recrystallization with increasing LDH concentration. Polarized optical microscopy coupled with differential scanning calorimetry and wide angle X-ray diffraction (WAXD) analysis indicated increased lamella thickness in the nanocomposites compared to pure PHBV. WAXD and transmission electron microscopy showed that the nanocomposites had an intercalated but aggregated dispersion. CONCLUSION: The concentration of nanofiller provides unique effects in PHBV. Mechanical performance was found to scale with composition as determined using dynamic mechanical analysis and tensile testing. (C) 2008 Society of Chemical Industry
dc.description58
dc.description2
dc.description133
dc.description141
dc.languageen
dc.publisherJohn Wiley & Sons Ltd
dc.publisherChichester
dc.publisherInglaterra
dc.relationPolymer International
dc.relationPolym. Int.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectpoly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)]
dc.subjectlayered double hydroxides
dc.subjectcrystallization
dc.subjectpolarized optical microscopy
dc.subjectthermal analysis
dc.subjectnanocomposites
dc.subjectLayered Double Hydroxides
dc.subjectThermal-properties
dc.subjectMechanical-properties
dc.subjectNucleating-agents
dc.subjectPoly(3-hydroxybutyrate-co-3-hydroxyvalerate)
dc.subjectPolyhydroxyalkanoates
dc.subjectCrystallization
dc.subjectExfoliation
dc.subjectDegradation
dc.subjectComposites
dc.titlePoly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)]/layered double hydroxide nanocomposites
dc.typeArtículos de revistas


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