Alternative approach to the design of thermosensitive polymers: The addition of hydrophobic groups to the ends of hydrophilic polyether
Alternative approach to the design of thermosensitive polymers: The addition of hydrophobic groups to the ends of hydrophilic polyether
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DOI：
10.1002/pola.20563
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发表时间：
2005-03
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影响因子：
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通讯作者：
Takeshi Mori;Yuuki Shiota;K. Minagawa;Masami Tanaka
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文献类型：
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作者：
Takeshi Mori;Yuuki Shiota;K. Minagawa;Masami Tanaka
我们通过在亲水性聚醚聚（环氧乙烷-co-环氧丙烷）的末端添加疏水基团合成了热敏聚合物。聚合物的浊点由聚醚的分子量和疏水端基的种类控制。该聚合物显示出相对尖锐的相变，通过浊度法观察到。不同端基的聚合物的浊点顺序与芘作为探针的荧光测量所确定的聚合物的临界胶束浓度的顺序不同。聚合物的浊点随盐（Na_2SO_4和Na_3 PO_4）浓度的增加而线性下降。线性曲线的斜率几乎不变，与疏水基团的种类和聚醚的分子量无关。© 2005 Wiley Periodicals，Inc.聚合物科学杂志A部分：聚合物化学43：1007-1013，2005
We synthesized thermosensitive polymers by adding hydrophobic groups to the ends of a hydrophilic polyether, poly(ethylene oxide-co-propylene oxide). The cloud points of the polymers were controlled by the molecular weight of the polyether and the kind of hydrophobic end group. The polymers showed relatively sharp phase transitions, as observed by turbidimetry. The order of the cloud points of the polymers with various end groups did not follow that of the critical micelle concentrations of the polymers determined with fluorescence measurements with pyrene as a probe. The cloud points of the polymers linearly decreased with increasing concentrations of salts (Na2SO4 and Na3PO4). The slopes of the linear lines were almost constant, regardless of the kind of hydrophobic group and the molecular weight of the polyether. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 1007–1013, 2005