Micellization and sustained drug release behavior of EC-g-PPEGMA amphiphilic copolymers
作者：Tan JJ, Li YX, Liu RG*, Kang HL, Wang DQ, Ma L, Liu WY, Wu M, Huang Y*
關鍵字：Ethylcellulose; Graft copolymer; Micelles; Drug release
論文來源：期刊
具體來源：Carbohydrate Polymers, 2010, 81(2), 213-218
發表時間：2010年
The micellization and sustained drug release behavior of ethyl cellulose graft poly(poly(ethylene glycol) methyl ether methacrylate) (EC-g-PPEGMA) copolymers with well-defined structure were investigated by using pyrene as the fluorescent probe and model drug. It was found that the EC-g-PPEGMA copolymers have a low critical micelle concentration (CMC) at about 5 x 10(-4) mg/mL. Drug loading experiments indicate that a low graft density of the copolymers corresponds to a higher drug loading efficiency and a higher loading capacity of drug in the micelles. The release rate of the loaded pyrene depends on both the length of the side chains and the loading capacity of pryene in the micelles. A shorter side chain of the copolymer and a higher ratio of the copolymer to the pyrene in the micelles correspond to a lower release rate. The self-assembly system shows a potential application in controlled drug delivery.