Synthesis and Sulfonation of Poly(aryl ethers) Containing Triphenyl Methane and Tetraphenyl Methane Moieties from Isocynate-Masked Bisphenols
作者:L. Wang、Y. Z. Meng、S. J. Wang、X. Y. Shang、L. Li、A. S. Hay
DOI:10.1021/ma035825i
日期:2004.5.1
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
通过芳族亲核取代取代的双酚和十氟联苯的缩聚反应,然后用氯磺酸进行磺化反应,成功合成了含有三苯基甲烷和四苯基甲烷部分的全芳族聚芳醚。由于设计了新颖的双酚结构,磺化仅发生在苯环侧基的对位。对于合成的聚合物,通过改变磺化剂的量,可以容易地控制磺化含量并且可以方便地调整水吸收。这些磺化聚合物可溶于极性有机溶剂,例如NMP,二甲基乙酰胺,二甲基亚砜,二甲基甲酰胺和乙二醇单甲醚,并且可以很容易地从溶液中流延成坚韧而光滑的薄膜。该膜表现出非常高的吸水能力和优异的机械强度。与Nafion相比,这些聚合物还表现出较高的玻璃化转变温度,范围为176至203°C。磺化聚合物可以潜在地用作燃料电池的质子交换膜。