用粘度法研究PMMA-g-PEO在甲苯中微胶束的形成

Study on the Micellization of PMMA-g-PEO in Toluene with Viscometry

采用粘度法研究了甲基丙烯酸甲酯 -氧乙烯两亲接枝共聚物 (PMMA - g -PEO)在选择性溶剂中微胶束的形成 ,探讨了共聚物质量浓度、溶液温度、接枝链长、PEO含量和共聚物相对分子质量对微胶束形成的影响 .研究结果表明 :随着共聚物质量浓度和溶液温度的变化 ,溶液粘度随之改变 ,接枝共聚物在溶液中的形态也发生变化 ;两亲接枝共聚物的接枝链长、PEO含量和相对分子质量对临界胶束浓度有较大的影响 .

The micellization of amphiphilic graft copolymer PMMA_g_PEO in selective solvent is examined by means of viscometry, the effects of mass concentration, temperature, PEO side chains lengths, PEO content and relative molecular mass on the micelle formation of PMMA_g_PEO in toluene are studied. It has been found that the viscosity of solution is changed with changing the concentration and temperature, so the structure of copolymer in solution is changed also. The critical micelle concentraion is affected by the PEO side chains lengths, the PEO content and the relative molecular mass in PMMA_g_PEO amphiphilic graft copolymer.