聚二甲基硅氧烷接枝二甲基丙烯酰胺的制备及其胶束化研究

Preparation and micellization of polydimethylsiloxane grafting dimethylacrylamide

The amphiphilic grafting copolymer,Polyepoxymethylsiloxane-g-poly(N,N-dimethylacryl amide),was prepared by epoxy ring-opening polymerization of polyepoxymethylsiloxane(PEMS) and hydroxyl-terminated poly(N,N-dimethylacrylamide)(OH-PDMAAm).The structure of the PEMS-g-PDMAAm copolymer was characterized by FTIR.The micellization of PEMS-g-PDMAAm in aqueous solution was investigated by Fluorescence spectrum and dynamic laser light scattering.The results indicated that when the concentration was above the 0.13mg/mL,the grafting copolymer associated and the average hydrodynamic radiuses of micelles were 121nm and 46nm.

Ihe amphiphilic grafting copolymer, Polyepoxymethylsiloxane-g- poly （N, N-dimethylacryl amide）, was prepared by epoxy ring - opening polymerization of polyepoxymethylsiloxane （PEMS） and hydroxyl - terminated poly（ N, N-dimethylacrylamide） （ OH - PDMAAm）. The structure of the PEMS - g - PDMAAm eopolymer was characterized by FTIR. The mieellization of PEMS - g- PDMAAm in aqueous solution was investigated by Fluorescence spectrum and dynamic laser light scattering. The results indicated that when the concentration was above the 0. 13mg/mL, the grafting eopolymer associated and the average hydrodynamic radiuses of micelles were 121nm and 46nm.