title: Preparation and characterization of temperature and pH-sensitive chitosan material and its controlled release on coenzyme A.
abstract: A novel copolymer P(CS-Ma-DMAEMA) was synthesized with chitosan (CS), maleic anhydride (Ma) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) by grafting and copolymerization. The copolymer obtained was analyzed by FT-IR, (1)H NMR and UV, and the molecular weight and polydispersity were determined by gel permeation chromatography (GPC). The average size and distribution of copolymer micelles were determined by dynamic light scattering (DLS). Their aqueous solution properties and controlled coenzyme A delivery were also studied. It was found that the copolymer had temperature sensitivity and pH sensitivity. The factors affecting release behavior, such as concentration, pH and temperature were discussed in this paper. The higher concentration of the copolymer aqueous solution absorbed more coenzyme A than the lower one. The increasing temperature accelerated the drug release from the copolymer. The pH of the copolymer solution had significant impact on the release of coenzyme A. The results suggested that the novel copolymer could be used as drug delivery carrier.
authors.affiliation: Institute of Fine Chemical and Engineering, Henan University, Kaifeng, Henan 475001, People's Republic of China.
authors.forename: BaoLin
authors.initials: B
authors.lastname: Guo
authors.forename: JinFang
authors.initials: J
authors.lastname: Yuan
authors.forename: QingYu
authors.initials: Q
authors.lastname: Gao
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000138:chemical synthesis / Q000737:chemistry / Q000493:pharmacokinetics*; D003065:Coenzyme A; D006863:Hydrogen-Ion Concentration; D008299:Maleic Anhydrides; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry / Q000493:pharmacokinetics; D013055:Spectrophotometry, Infrared; D013696:Temperature
chemical_list: D008299:Maleic Anhydrides; D011108:Polymers; D048271:Chitosan; D003065:Coenzyme A