Synthesis and Sulfonation of Poly(aryl ethers) Containing Triphenyl Methane and Tetraphenyl Methane Moieties from Isocynate-Masked Bisphenols
Synthesis and Sulfonation of Poly(aryl ethers) Containing Triphenyl Methane and Tetraphenyl Methane Moieties from Isocynate-Masked Bisphenols
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DOI：
10.1021/ma035825i
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发表时间：
2004-04
期刊：
影响因子：
5.5
通讯作者：
Lu Wang;Y. Meng;Shuanjin Wang;X. Shang;Lin Li;A. S. Hay
中科院分区：
文献类型：
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作者：
Lu Wang;Y. Meng;Shuanjin Wang;X. Shang;Lin Li;A. S. Hay
以蒙面双酚和十氟联苯为原料，经氯磺酸磺化，采用亲芳核取代缩聚反应，成功合成了含三苯基甲烷和四苯基甲烷的全芳聚芳醚。由于设计了新的双酚结构，磺化反应只发生在苯环上的对位上。对于合成的聚合物，通过改变磺化剂的用量，可以很容易地控制磺化含量和方便地定制吸水率。这些磺化聚合物可溶于极性有机溶剂，如NMP、二甲乙酰胺、二甲基亚砜、二甲基甲酰胺和乙二醇单甲基醚，并且可以很容易地从溶液中铸造成坚韧光滑的薄膜。薄膜具有很高的吸水能力和优异的机械强度。与Nafion相比，这些聚合物也表现出较高的玻璃化转变温度，范围从176℃到203℃。T…
Wholly aromatic poly(aryl ethers) containing triphenylmethane and tetraphenylmethane moieties were successfully synthesized by aromatic nucleophilic substituting polycondensation from masked bisphenols and decafluorobiphenyl followed by sulfonation with chlorosulfonic acid. The sulfonation took place only at the para positions on the pendant phenyl rings due to the novel biphenol structures designed. For the synthesized polymers, the sulfonation content can be easily controlled and the water-takeup can be conveniently tailored by changing the amount of sulfonation agent. These sulfonated polymers are soluble in polar organic solvents, such as NMP, dimethylacetamide, dimethyl sulfoxide, dimethylformamide, and ethylene glycol monomethyl ether and can be readily cast into tough and smooth films from solutions. The films exhibited very high water absorption ability and superior mechanical strength. These polymers also showed high glass transition temperatures ranging from 176 to 203 °C compared with Nafion. T...