title: Complex microparticulate systems based on glycidyl methacrylate and xanthan.
abstract: Porous microparticles based on glycidyl methacrylate, dimethacrylic monomers [ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate] and xanthan gum were synthesized by aqueous suspension polymerization method in the presence of toluene as diluent using two types of initiators: benzoyl peroxide and ammonium persulfate. The G microparticles based on glycidyl methacrylate and dimethacrylic monomers and X microparticles based on glycidyl methacrylate, xanthan and dimethacrylic monomers were characterized by various techniques including FT-IR spectroscopy, TG analysis, SEM analysis and DVS method. The specific surface areas were determined by DVS method, while the copolymer porosities and pore volume were obtained from the apparent and skeletal densities. The results have indicated that xanthan was included in the crosslinked matrix by means of covalent bonds. X microparticles have a porous structure with higher specific surface area (129-44 m(2)/g) and higher sorption capacities compared with G microparticles (69-31 m(2)/g).
authors.affiliation: "Gheorghe Asachi" Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, Department of Natural and Synthetic Polymers, Prof. dr. docent Dimitrie Mangeron Street, No. 73, 700050 Iasi, Romania. Electronic address: maria_andreea.lungan@yahoo.com.
authors.forename: Maria-Andreea
authors.initials: MA
authors.lastname: Lungan
authors.affiliation: "Gheorghe Asachi" Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, Department of Natural and Synthetic Polymers, Prof. dr. docent Dimitrie Mangeron Street, No. 73, 700050 Iasi, Romania. Electronic address: marpopa2001@yahoo.fr.
authors.forename: Marcel
authors.initials: M
authors.lastname: Popa
authors.affiliation: Pau and Pays de l'Adour University (UPPA), Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Materiaux (IPREM/EPCP), UMR CNRS 5254, Helioparc Pau Pyrenees, 2, av. President Angot, 64053 Pau Cedex 09, France. Electronic address: jacques.desbrieres@univ-pau.fr.
authors.forename: Jacques
authors.initials: J
authors.lastname: Desbrieres
authors.affiliation: "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41A, 700487 Iasi, Romania. Electronic address: stefania.racovita@icmpp.ro.
authors.forename: Stefania
authors.initials: S
authors.lastname: Racovita
authors.affiliation: "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41A, 700487 Iasi, Romania. Electronic address: msilvia@icmpp.ro.
authors.forename: Silvia
authors.initials: S
authors.lastname: Vasiliu
mesh_terms: D004852:Epoxy Compounds / Q000737:chemistry*; D008689:Methacrylates / Q000737:chemistry*; D008863:Microspheres; D011135:Polysaccharides, Bacterial / Q000737:chemistry*
chemical_list: D004852:Epoxy Compounds; D008689:Methacrylates; D011135:Polysaccharides, Bacterial; C007870:glycidyl methacrylate; C002563:xanthan gum
keywords: Glycidyl methacrylate; Porous microparticles; Surface area; Suspension polymerization; Xanthan gum