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Titolo:
Synthesis of amino-functionalized latex particles by a multistep method
Autore:
Miraballes-Martinez, I; Martin-Molina, A; Galisteo-Gonzalez, F; Forcada, J;
Indirizzi:
Univ Pais Vasco, Inst Polymer Mat POLYMAT, E-20080 San Sebastian, Spain Univ Pais Vasco San Sebastian Spain E-20080 E-20080 San Sebastian, Spain Univ Republica, Fac Ciencias & Quim, Lab Immunotecnol, Montevideo 3051, Uruguay Univ Republica Montevideo Uruguay 3051 otecnol, Montevideo 3051, Uruguay Univ Pais Vasco, Fac Ciencias Quim, Dept Quim Aplicada, EHU, E-20080 San Sebastian, Spain Univ Pais Vasco San Sebastian Spain E-20080 E-20080 San Sebastian, Spain Univ Granada, Fac Ciencias, Dept Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain Univ Granada Granada Spain E-18071 & Biocoloides, E-18071 Granada, Spain
Titolo Testata:
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
fascicolo: 17, volume: 39, anno: 2001,
pagine: 2929 - 2936
SICI:
0887-624X(20010901)39:17<2929:SOALPB>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
FREE EMULSION COPOLYMERIZATION; POLYSTYRENE LATEX; LIGHT-SCATTERING; SURFACE; STYRENE; MONOMERS;
Keywords:
emulsion polymerization; colloids; functionalization; stabilization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Forcada, J Univ Pais Vasco, Inst Polymer Mat POLYMAT, Apdo 1072, E-20080 San Sebastian, Spain Univ Pais Vasco Apdo 1072 San Sebastian Spain E-20080 n, Spain
Citazione:
I. Miraballes-Martinez et al., "Synthesis of amino-functionalized latex particles by a multistep method", J POL SC PC, 39(17), 2001, pp. 2929-2936

Abstract

Cationic latex particles with surface amino groups were prepared by a multistep batch emulsion polymerization. In the first one or two steps, monodisperse cationic latex particles to be used as the seed were synthesized, andin the third step, two different amino-functionalized monomers [aminoethylmethacrylate hydrochloride (AEMH) and vinylbenzylamine hydrochloride (VBAH)] were used to synthesize the final functionalized latex particles. 2,2 ' -Azobisisobutyramidine dihydrochloride was used as the initiator, and different concentrations of two quaternary ammonium emulsifiers with hydrophobic chains of different lengths were examined. To characterize the final latexes yields were obtained gravimetrically, and particle size distributions andaverage particle diameters were determined by transmission electron microscopy and photon correlation spectroscopy. The amount of amino groups was determined by fluorimetry. The effect of the amino-functional monomer used onthe final latexes and the colloidal behavior of the system were studied. The influence of the different conditions utilized to synthesize the latexeson the colloidal stability of the particles was evaluated in terms of the Fuchs stability ratio and electrophoretic mobility. High yields of the amino-functional monomers were obtained. Surface amino, amidine, and quaternaryammonium groups provided the cationic character. The colloidal stability behavior of the products obtained was compatible with their cationic character. (C) 2001 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 14:07:20