无机杂化倍半硅氧烷/磺化杂萘联苯聚醚酮质子导电复合膜  

Proton Conducting Composite Membrane Based Sulfonated Poly (phthalazinone ether ketone) and Polyhedral Oligomeric Silsesquioxane

作　　者：赵亮[1] 黄玉东[1] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001

出　　处：《化学与粘合》2008年第1期9-12,33,共5页Chemistry and Adhesion

摘　　要：通过磺化反应制备了一系列不同磺化程度的磺化杂萘联苯聚醚酮(SPPEK),采用共混法将无机杂化倍半硅氧烷(POSS)掺杂到IEC值为1.60的SPPEK中,通过溶液浇铸制得复合膜。对SPPEK/POSS复合膜进行了FTIR、TGA分析和SEM表观形貌观察。研究了SPPEK/POSS复合膜的吸水性、溶胀度和质子导电性,并与Nafion (?)117进行对比。随着POSS的加入,复合膜的吸水性、溶胀度和氧化稳定性提高。SPPEK/POSS复合膜的室温电导率达到0.75×10^(-2)S·cm^(-1),接近Nafion (?)117膜相同条件下的电导率(1.08×10^(-2)S·cm^(-1))。随着温度升高,SPPEK/POSS复合膜的电导率逐渐增大。采用不同测试方法分别对复合膜的膜平面方向和厚度方向上的电导率进行了测试,表明在两个方向上的电导率相差较大,SPPEK/POSS复合膜室温下膜平面方向上的电导率达到2.1×10^(-2)S·cm^(-1)。A series of sulfonated poly（ phthalazinone ether ketone） with various degrees of sulfonation were prepared by sulfonation reaction of poly （ phthalazinone ether ketone）. The composite membrane based on SPPEK （ IEC = 1.60） and POSS were prepared by solution casting method. The SPPEK/POSS membrane was characterized by FTIR, TGA and SEM. The water uptake, swelling ratio and proton conductivity of SPPEK/POSS membranes were investigated in comparison with Nation 117. The water uptake, swelling ratio and oxidative stability of the composite membrane were increased with adding POSS. The proton conductivity in thickness direction of SPPEK/POSS at room temperature reaches 0.75 × 10^-2S · cm^-1 , which is close to that of Nation 117 membranes measured in the same conditions （1.08 × 10^- 2S · cm^- 1）. The proton conductivity of the composite membrane is increasing with the rise of the temperature. The anisotropy of proton conductivity of SPPEK/POSS membranes in plane and thickness direction is found. The proton conductivity in plane direction at room temperature reaches 2.1 × 10^-2S·cm^-1.

关 键 词：磺化杂萘联苯聚醚酮 无机杂化倍半硅氧烷 复合膜 质子传导性 

分 类 号：TQ322.95[化学工程—合成树脂塑料工业]