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Copolymerization of DVB with MA in non aqueous dispersion

R. SOMOGHI1,* , D. DONESCU1, M. GHIUREA1, C. RADOVICI1, S. SERBAN1, C. PETCU1, C. L. NISTOR1

Affiliation

  1. Departament of Polymers, I.N.C.D.C.P.-ICECHIM, Spl. Independentei, 202, CP 15-159, Bucharest, Romania

Abstract

Copolymerization of divinyl benzene (DVB) with maleic anhydride (MA) was studied to obtain functional particles. UV spectra of monomer mixtures DVB+MA put in evidence charge-transfer complexes like styrene-MA. Copolymerizations were performed in the presence of monomaleates of nonylphenol ethoxylated with 4 moles of ethylene oxide (MEMNPEO4) and dodecyl alcohol ethoxylated with 4 moles ethylene oxide (MEMC12EO4). Particle sizes and Zeta Potential decreased with increasing MEM concentrations in the presence of layered silicates like montmorillonite (MMT), Na montmorillonite (NaMMT) and organo modified montmorillonite (OMMT), the Zeta potential decreased too, proving the presence of a part of aluminosilicates on the surface of the particles. IR spectra and TGA confirmed the presence of MMT in copolymers. XRD diagrams put in evidence that the modification of the state of MMT in the copolymer matrix is affected by the chemical structure of organo modifier. SEM images suggested that particles with spherical shapes were obtained in the presence of MEMNPEO4, MEMC12EO4 and NaMMT. In the presence of OMMT only agglomerated particles were obtained..

Keywords

Divinye bezene, Maleic anhydride, Organoclay, Copolymerization, Nanocomposites, Synthesis, Dispersions, particles.

Submitted at: Feb. 8, 2008
Accepted at: June 9, 2008

Citation

R. SOMOGHI, D. DONESCU, M. GHIUREA, C. RADOVICI, S. SERBAN, C. PETCU, C. L. NISTOR, Copolymerization of DVB with MA in non aqueous dispersion, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 6, pp. 1457-1462 (2008)