Precipitation Of Calcium Phosphate And Calcium Carbonate Induced Over Chitosan Membranes: A Quick Method To Evaluate The Influence Of Polymeric Matrices In Heterogeneous Calcification.

dc.creatorAimoli, Cassiano Gomes
dc.creatorBeppu, Marisa Masumi
dc.date2006-Nov
dc.date2015-11-27T13:05:45Z
dc.date2015-11-27T13:05:45Z
dc.date.accessioned2018-03-29T01:03:21Z
dc.date.available2018-03-29T01:03:21Z
dc.identifierColloids And Surfaces. B, Biointerfaces. v. 53, n. 1, p. 15-22, 2006-Nov.
dc.identifier1873-4367
dc.identifier10.1016/j.colsurfb.2006.07.012
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/16938441
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/196911
dc.identifier16938441
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1297144
dc.descriptionPrecipitation of calcium compounds (phosphate and carbonate) was performed on chitosan porous and dense membranes. In order to observe the influence of acetyl groups on the nature of formed precipitates, some chitosan membranes were acetylated in methanol solution before undergoing calcification. Calcification experiments were performed more quickly than using SBF. In this method, a faster precipitation is induced by soaking the membranes in calcium chloride solutions and, in sequence, immersing the same membranes into sodium phosphate or carbonate solutions. This procedure induced the formation of calcium compound precipitates on membrane surfaces, which were analysed through optical microscopy, X-ray diffraction (XRD), Fourier-transformed infrared spectroscopy with attenuated total reflection apparatus (FTIR-ATR) and small angle X-ray scattering (SAXS). The results indicated the biomimetic influence of the organic matrix on morphology, organization and composition of precipitates. The acetyl group induced the formation of organized calcium carbonate better than phosphate, which may correlate with the fact that these two compounds are commonly found together in nature in structures like shells and nacre.
dc.description53
dc.description15-22
dc.languageeng
dc.relationColloids And Surfaces. B, Biointerfaces
dc.relationColloids Surf B Biointerfaces
dc.rightsfechado
dc.rights
dc.sourcePubMed
dc.subjectCalcium Carbonate
dc.subjectCalcium Phosphates
dc.subjectChemical Precipitation
dc.subjectChitosan
dc.subjectMembranes, Artificial
dc.subjectSpectroscopy, Fourier Transform Infrared
dc.subjectX-ray Diffraction
dc.titlePrecipitation Of Calcium Phosphate And Calcium Carbonate Induced Over Chitosan Membranes: A Quick Method To Evaluate The Influence Of Polymeric Matrices In Heterogeneous Calcification.
dc.typeArtículos de revistas


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