Determination of the equivalent radii and fractal dimension of polystyrene latex aggregates from sedimentation coefficients

dc.creatorTakayasu, MM
dc.creatorGalembeck, F
dc.date1998
dc.date37043
dc.date2014-12-02T16:26:40Z
dc.date2015-11-26T16:56:51Z
dc.date2014-12-02T16:26:40Z
dc.date2015-11-26T16:56:51Z
dc.date.accessioned2018-03-28T23:44:22Z
dc.date.available2018-03-28T23:44:22Z
dc.identifierJournal Of Colloid And Interface Science. Academic Press Inc, v. 202, n. 1, n. 84, n. 88, 1998.
dc.identifier0021-9797
dc.identifierWOS:000073769800009
dc.identifier10.1006/jcis.1998.5428
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/61452
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/61452
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/61452
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277506
dc.descriptionSedimentation coefficients of small polystyrene latex aggregates (n = 2, 3, 4) were determined by centrifugation of a coagulated latex sample within a density gradient and fitted to the R* = n(c)r equation, where R* is the equivalent radius of the aggregate, r is the radius of each individual sphere, and c = 0.58. This equation was also satisfactorily used to fit latex aggregate diffusion data, previously published by other authors. The constant c agrees with the value calculated from the fractal dimension D-f reported for larger aggregates in the literature, using c = 1/D-f. As a conclusion, aggregate sedimentation and diffusion coefficients can be obtained from light-scattering and microscopical data, and vice versa, using a scaling factor which is related to the aggregate fractal dimension. (C) 1998 Academic Press.
dc.description202
dc.description1
dc.description84
dc.description88
dc.languageen
dc.publisherAcademic Press Inc
dc.publisherSan Diego
dc.publisherEUA
dc.relationJournal Of Colloid And Interface Science
dc.relationJ. Colloid Interface Sci.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectaggregates
dc.subjectequivalent radii
dc.subjectPS latex aggregates
dc.subjectsedimentation of aggregates
dc.subjectdiffusion of aggregates
dc.subjectfractal dimension of aggregates
dc.subjectCluster Aggregation
dc.subjectCoagulation
dc.subjectParticles
dc.subjectSize
dc.titleDetermination of the equivalent radii and fractal dimension of polystyrene latex aggregates from sedimentation coefficients
dc.typeArtículos de revistas


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