氧化羧甲基纤维素的两亲接枝共聚物在水溶液中的自组装。
Self-assembly in aqueous solution of amphiphilic graft copolymers from oxidized carboxymethylcellulose.
机构信息
Cuban Research Institute of Sugar Cane, Havana, Cuba; Department of Chemistry and Environmental Science, Institute of Biosciences, Humanities, and Exact Science (IBILCE), San Paulo University (UNESP), San Paulo, SP, Brazil; Center for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, A Coruña, Spain.
Faculty of Chemistry, Havana University, Havana, Cuba.
出版信息
Carbohydr Polym. 2015 Jun 25;124:43-9. doi: 10.1016/j.carbpol.2015.01.082. Epub 2015 Feb 12.
A series of oxidized carboxymethylcellulose-graft-poly(ethylene glycol)-dodecylamine (OCMC-g-PEG-DDA) was prepared by using an appositely prepared PEG with terminal amino groups and different amounts of DDA. The nanoaggregates formed in aqueous solution were characterized by surface tension measurements, fluorescence spectroscopy, dynamic light scattering (DLS) and scanning electron microscopies (SEM and TEM). The micelles showed narrow hydrodynamic size distributions and diameters varying from 163 to 193nm depending on the ratio of DDA to PEG chains. The DDA content in the graft copolymers also affected the core-shell interfacial compactness.
一系列氧化羧甲基纤维素接枝聚乙二醇-十二烷基胺（OCMC-g-PEG-DDA）是通过使用带有末端氨基的特殊 PEG 和不同量的 DDA 制备的。在水溶液中形成的纳米聚集体通过表面张力测量、荧光光谱、动态光散射（DLS）和扫描电子显微镜（SEM 和 TEM）进行了表征。胶束表现出窄的流体力学尺寸分布和直径，直径从 163nm 到 193nm 不等，取决于 DDA 与 PEG 链的比例。接枝共聚物中的 DDA 含量也影响核壳界面的紧密性。
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