以4-(3-苯基-4-羟基苯基)-2,3-二氮杂萘-1-酮、4-(4-羟基苯基)-2,3-二氮杂萘-1-酮和4,4’-二氯二苯砜为单体,合成了一系列含侧苯基杂萘联苯聚醚砜,然后以浓硫酸为磺化剂,制备磺化含侧苯基杂萘联苯聚醚砜(SPPES-P)。采用 FT-IR、1 H NMR 对聚合物的结构进行了表征,表明磺酸基被成功地引入到聚合物侧链苯基上。采用溶液法制备了 SPPES-P 质子交换膜。考察了 SPPES-P 膜的吸水率、溶胀率、质子传导率,以及甲醇渗透性能和耐氧化性能,SPPES-P 膜具有较好的阻醇性和耐氧化性能。
A series of poly(phthalazinone ether sulfone)containing pendant phenyl groups (PPES-P)were syn-thesized from 4-(3-phenyl-4-hydroxyphenyl)-2,3-phthalazin-1-one,4-(4-hydroxyphenyl)-2,3-phthalazin-1-one and 4,4'-dichlorodiphenyl sulfone.Sulfonated poly (phthalazinone ether sulfone)containing pendant phenyl groups (SPPES-P)were prepared from PPES-P with concentrated sulfuric acid as the sulfonating agent.The ion exchange capacity (IEC)of SPPES-P was obtained by titration method and theoretical calculation.The chemical structure of PPES-P and SPPES-P were characterized with 1 H NMR and FT-IR.SPPES-P proton ex-change membranes with different IEC values were prepared.SPPES-P membranes exhibited moderate water up-take and low swelling.SPPES-P membranes showed high oxidative stability and low methanol permeability. The methanol permeability values of SPPES-P membranes ranged from 7.34×10-8 cm2/s to 1.2×10-7 cm2/s, which were much lower than that of Nafion117 membrane (1.04×10-6 cm2/s)under the same test condition. The proton conductivities of SPPES-P membranes increased with the increase of IEC and temperature.The pro-ton conductivity of SPPES-P100 membrane reached 1.4×10-2 S/cm at 95℃.
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