STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE

The polysaccharide, kappa-carrageenan (kC), has been chemically modified by graft copolymerization of 2-hydroxyethylmethacrylate (HEMA) in an aqueous medium using ceric ammonium nitrate (CAN) as an initiator under argon atmosphere. A plausible reaction mechanism of grafting has been suggested. Evide...

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Autores principales:	SADEGHI,MOHAMMAD, HOSSEINZADEH,HOSSEIN
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2010
Materias:	polymer synthesis carrageenan -hydroxyethylmethacrylate graft copolymerization ceric ammonium nitrate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000400019
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id	oai:scielo:S0717-97072010000400019
record_format	dspace
spelling	oai:scielo:S0717-970720100004000192011-05-25STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATESADEGHI,MOHAMMADHOSSEINZADEH,HOSSEIN polymer synthesis carrageenan -hydroxyethylmethacrylate graft copolymerization ceric ammonium nitrate The polysaccharide, kappa-carrageenan (kC), has been chemically modified by graft copolymerization of 2-hydroxyethylmethacrylate (HEMA) in an aqueous medium using ceric ammonium nitrate (CAN) as an initiator under argon atmosphere. A plausible reaction mechanism of grafting has been suggested. Evidence of grafting was obtained by comparison of FTIR spectra of kC and homopolymer-free kC-g-poly(HEMA) as well as solubility characteristics and gravimetric analysis of the products. The optimum reaction conditions affording maximum grafting ratio and add-on value have been determined. The grafting parameters have been found to increase with increasing in kC, CAN, and HEMA concentrations as well as polymerization time and temperature, up to a certain value, but these parameters decrease on further increasing in reaction conditions.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.55 n.4 20102010-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000400019en10.4067/S0717-97072010000400019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	polymer synthesis carrageenan -hydroxyethylmethacrylate graft copolymerization ceric ammonium nitrate
spellingShingle	polymer synthesis carrageenan -hydroxyethylmethacrylate graft copolymerization ceric ammonium nitrate SADEGHI,MOHAMMAD HOSSEINZADEH,HOSSEIN STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE
description	The polysaccharide, kappa-carrageenan (kC), has been chemically modified by graft copolymerization of 2-hydroxyethylmethacrylate (HEMA) in an aqueous medium using ceric ammonium nitrate (CAN) as an initiator under argon atmosphere. A plausible reaction mechanism of grafting has been suggested. Evidence of grafting was obtained by comparison of FTIR spectra of kC and homopolymer-free kC-g-poly(HEMA) as well as solubility characteristics and gravimetric analysis of the products. The optimum reaction conditions affording maximum grafting ratio and add-on value have been determined. The grafting parameters have been found to increase with increasing in kC, CAN, and HEMA concentrations as well as polymerization time and temperature, up to a certain value, but these parameters decrease on further increasing in reaction conditions.
author	SADEGHI,MOHAMMAD HOSSEINZADEH,HOSSEIN
author_facet	SADEGHI,MOHAMMAD HOSSEINZADEH,HOSSEIN
author_sort	SADEGHI,MOHAMMAD
title	STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE
title_short	STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE
title_full	STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE
title_fullStr	STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE
title_full_unstemmed	STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE
title_sort	studies on graft copolymerization of 2-hydroxyethylmethacrylate onto kappa-carrageenan initiated by ceric ammonium nitrate
publisher	Sociedad Chilena de Química
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000400019
work_keys_str_mv	AT sadeghimohammad studiesongraftcopolymerizationof2hydroxyethylmethacrylateontokappacarrageenaninitiatedbycericammoniumnitrate AT hosseinzadehhossein studiesongraftcopolymerizationof2hydroxyethylmethacrylateontokappacarrageenaninitiatedbycericammoniumnitrate
_version_	1718445438855544832

STUDIES ON GRAFT COPOLYMERIZATION OF 2-HYDROXYETHYLMETHACRYLATE ONTO KAPPA-CARRAGEENAN INITIATED BY CERIC AMMONIUM NITRATE

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