Graft copolymerization of butyl acrylate onto pullulan using manganic pyrophosphate as initiator

Abstract

SYNOPSISThe graft copolymerization of butyl acrylate onto pullulan using manganic pyrophosphate as initiator in aqueous medium was studied. The effects of concentration of initiator, monomer, pullulan, and sulfuric acid on the percentage of grafting, the grafting efficiency, as well as the rate of graft copolymerization were investigated. The rate equation was derived and a suitable reaction mechanism was proposed. Finally, the grafted samples were characterized by IR spectral measurement.

Studies on graft copolymerization of 3-acrylamidopropyl trimethylammonium chloride on pullulan

“…A number of papers have been published on the grafting polymerization of N-isopropylacrylamide (Masci, Bontempo, & Crescenzi, 2002), etylenic compound (Seizo, Kozo, Nobuhiro, & Fumio, 1975), lactide (Ohya, Maruhashi, & Ouchi, 1998), ethylene glycol (Jiao, Fu, & Jiang, 2004), butyl acrylate (Tian, Gao, Yu, & Duan, 1992), p-hydroxystyrene (Chen, Oshima, & Kumanotani, 1985), methyl methacrylate (Wu, Jin, Kim, Tong, & Chen, 2009) onto pullulan.…”

Pullulan and pullulan derivatives as promising biomolecules for drug and gene targeting

“…Their relative reactivities also depend on the polarity of the solvent and reagents. The graft copolymerization of butyl acrylate onto pullulan has been performed by Tian, Gao, Yu, and Duan (1992). Pullulan has also been modified by substituting OH groups with monomers such as methacrylate, acrylamide, l-lactide or oxazoline derivatives in order to prepare copolymerized hydrogels.…”

On the Use of Starch in Emulsion Polymerizations

“…Manganese initiators have been used with styrene binary systems including AN [167], EA [167] and MMA [168], where the highest performance was observed for pure styrene (GE = 90, PG = 200) [167,169].…”