采用耗散粒子动力学(Dissipativeparticledynamics,DPD)方法研究了Pl23(PEO~-PP07o-PEO∞)嵌段 共聚物水溶液常温下的物理凝胶化行为.在体积分数(2%～10%)较低时,P123在水溶液中形成球形胶束. 当P123的水溶液体积分数升高到20%时,会形成柱状胶束.在P123的水溶液体积分数为30%和40%时, ...
P123(PEO旷PPO。一PEO )嵌段共聚物;物理凝胶;耗散粒子动力学模拟 中图分类号 O641;O631 文献标识码 A 文章编号 025l-0790(2009)12-2455-05 近十几年来,PEO—PPO.PEO三嵌段共聚物水溶液体系形成胶束化结构和凝胶化的行为得到了越 来越多的关注¨ .PEO—PPO.PEO由亲水的PEO和疏水的PPO链段组成,是一类分子...
terpolymer poly(N-isopropylacrylamide)x-poly(ethylene oxide)20-poly(propylene oxide)70-poly(ethylene oxide)20-poly(N-isopropylacrylamide)x(PNIPAmx-PEO20-PPO70-PEO20-PNIPAmxor PNIPAmx-P123-PNIPAmx) withxof 10, 63 and 97 on gold were studied by using a quartz crystal microbalance (QCM) ...
Effect of SDS on the self-assembly behavior of the PEO-PPO-PEO triblock copolymer (EO)20(PO)70(EO)20. The mixed micellar system comprising the poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)-based triblock copolymer (EO)(20)(PO)(70)(EO)(20) (P123) and the anionic ...