Photothermal methods and atomic force microscopy images applied to the study of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) dense membranes

dc.creatorPoley, LH
dc.creatorSiqueira, APL
dc.creatorda Silva, MG
dc.creatorSanchez, R
dc.creatorPrioli, R
dc.creatorMansanares, AM
dc.creatorVargas, H
dc.date2005
dc.dateAUG 15
dc.date2014-11-18T04:46:47Z
dc.date2015-11-26T17:46:38Z
dc.date2014-11-18T04:46:47Z
dc.date2015-11-26T17:46:38Z
dc.date.accessioned2018-03-29T00:29:10Z
dc.date.available2018-03-29T00:29:10Z
dc.identifierJournal Of Applied Polymer Science. John Wiley & Sons Inc, v. 97, n. 4, n. 1491, n. 1497, 2005.
dc.identifier0021-8995
dc.identifierWOS:000230262200011
dc.identifier10.1002/app.21891
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59701
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/59701
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59701
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1288544
dc.descriptionThermal and transport properties of some polyhydroxyalkanoates (PHAs), poly-3- hydroxybutyrate and poly-3-hydroxybutyrate-co-3-hydroxyvalerate copolymers at different concentrations (8, 14, and 22%), were studied by using photoacoustic and photothermal techniques. Mass diffusion coefficients were obtained for carbon dioxide and oxygen by using a gas analyzer. Specific heat capacity measurements were performed by monitoring temperature of the samples under white light illumination against time. Thermal diffusivities were determined by using the open photoacoustic cell configuration. The results were discussed considering the incorporation of hydroxyvalerate units in the poly(3-hydroxybutyrate) unit cell and were correlated with atomic force microscopy images of the upper surface of membranes. New information on transport properties of PHAs is provided. (c) 2005 Wiley Periodicals, Inc.
dc.description97
dc.description4
dc.description1491
dc.description1497
dc.languageen
dc.publisherJohn Wiley & Sons Inc
dc.publisherHoboken
dc.publisherEUA
dc.relationJournal Of Applied Polymer Science
dc.relationJ. Appl. Polym. Sci.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectdiffusion coefficient
dc.subjectthermal diffusion
dc.subjectphotoacoustic spectroscopy
dc.subjectThermal-diffusivity
dc.subjectTransport
dc.subjectFilms
dc.subjectPhb
dc.subjectCopolymers
dc.subjectSorption
dc.subjectGases
dc.subjectCell
dc.titlePhotothermal methods and atomic force microscopy images applied to the study of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) dense membranes
dc.typeArtículos de revistas


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