Surface and morphological characterization of poly[styrene-co-(Boc-p-aminostyrene)] microspheres

dc.creatorCovolan, VL
dc.creatorVolpe, PLO
dc.creatorde Castro, SGC
dc.creatorLanders, R
dc.creatorFernandes, EG
dc.creatorRuggeri, G
dc.date2002
dc.date47300
dc.date2014-11-14T01:42:00Z
dc.date2015-11-26T16:03:43Z
dc.date2014-11-14T01:42:00Z
dc.date2015-11-26T16:03:43Z
dc.date.accessioned2018-03-28T22:52:56Z
dc.date.available2018-03-28T22:52:56Z
dc.identifierMacromolecular Chemistry And Physics. Wiley-v C H Verlag Gmbh, v. 203, n. 41953, n. 1454, n. 1459, 2002.
dc.identifier1022-1352
dc.identifierWOS:000177544000023
dc.identifier10.1002/1521-3935(200207)203:10/11<1454
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74854
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74854
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74854
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1265333
dc.descriptionPoly[styrene-co-(Boc-p-aminostyrene)] microspheres were obtained by dispersion copolymerization of styrene (ST) and Boc-p-aminostyrene (Boc-AMST) monomers. The polymer microspheres obtained were soluble in chloroform. The copolymer composition was determined by NMR, average molecular weight and polydispersity by gel permeation chromatography. Copolymers with different co-monomer molar content were synthesized with molecular weights ranging from 40 000-125 000, and polydispersity indices ranging from 2.0-3.5. Particle size by Coulter-counter measurements and surface area analysis by BET method were performed; the mean diameter of the particles ranged from 0.7 to 1.2 mum, the surface area ranged from 1.2 to 5.7 m(2) (.) g(-1) and the mean pore dimension was around 100 Angstrom. By scanning electron microscopy it was verified that the particles were spherical with a homogeneous size distribution. The relative surface density of NH groups on the particle surface, determined b X-ray photoelectron spectroscopy, was between 2.62 (.) 10(15) and 1.48 (.) 10(16) gen atoms/cm(2); this value increased with increasing content of aminated comonomer in the monomeric feed. Particle-water interactions, investigated by differential scanning calorimetry measurements, suggest that the presence of NH-COOC(CH3)(3) groups increases the capacity of water adsorption by the microspheres.
dc.description203
dc.description41953
dc.description1454
dc.description1459
dc.languageen
dc.publisherWiley-v C H Verlag Gmbh
dc.publisherWeinheim
dc.publisherAlemanha
dc.relationMacromolecular Chemistry And Physics
dc.relationMacromol. Chem. Phys.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectBoc-p-aminostyrene
dc.subjectdispersion polymerization
dc.subjectmicrospheres
dc.subjectpolystyrene latex
dc.subjectstyrene
dc.subjectsurface area
dc.subjectImmobilized Antibodies
dc.subjectPolystyrene Latexes
dc.subjectParticles
dc.subjectCopolymers
dc.subjectAdsorption
dc.subjectProteins
dc.titleSurface and morphological characterization of poly[styrene-co-(Boc-p-aminostyrene)] microspheres
dc.typeArtículos de revistas


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