Solvent responsive micelles based on block and gradient copoly(2-oxazoline)s
Solvent responsive micelles based on block and gradient copoly(2-oxazoline)s
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DOI：
10.1021/ma702801e
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发表时间：
2008-03-11
期刊：
影响因子：
5.5
通讯作者：
Schubert, Ulrich S.
中科院分区：
文献类型：
--
作者：
Hoogenboom, Richard;Thijs, Hanneke M. L.;Schubert, Ulrich S.
研究了嵌段共聚物和梯度共聚物（2-恶唑啉）在水-乙醇二元混合溶剂中对单体分布影响的溶剂响应性。还证明了在二元水-乙醇溶剂混合物中，从简单的两亲统计共聚物形成复杂的自组装结构，包括环形和Y-结。胶束的显微图像表明，共聚物与乙醇的自组装导致形成球形胶束和蠕虫状胶束。非离子型准二嵌段统计共聚物自组装形成的环状结构类似于三嵌段共聚物的结构。结果还表明，在干燥样品中观察到的形态类似于共聚物溶液中存在的结构，表明它们不是由干燥效应形成的
The solvent responsiveness of block and gradient copoly (2-oxazoline) in binary water-ethanol mixtures to adderss the effect of monomer distribution was investigated. The formation of complex self-assembly structures, including toroids and Y-junctions, from a simple amphiphilic statistical copolymer in binary water-ethanol solvent mixtures, was also demonstrated. The microscopic images of the micelles resulting from the self-assembly shows that the self-assembly of the copolymer with ethanol results in the formation of both spherical micelles and wormlike micelles. The formation of toroids by the self-assembly of nonionic quasi-diblock statistical copolymer resembles the architecture of triblock copolymer. The results also show that the morphologies observed for the dried samples resemble the structures present in the copolymer solution, demonstrating that they are not formed by drying effect