摘要:
A novel class of proton exchange membrane materials, sulfonated poly(phthalazinones), were prepared by modification of poly(phthalazinone). Sulfonation reactions were conducted at room temperature using mixtures of 95-98% concentrated sulfuric acid and 27-33% fuming sulfuric acid with different acid ratios in order to get SPPEK with degree of sulfonation (DS) in the range of 0.6 to 1.0. The presence of sulfonic acid groups was confirmed by FT-IR analysis, and the DS and structures were characterized by NMR. The introduction of sulfonic groups into the polymer chains led to an increase in the glass transition temperature and a decrease in the decomposition temperature. Membrane films were cast from solution in N,N-dimethylformamide or N,N-dimethylacetamide. Water uptakes and swelling ratios of the membrane films increased with DS and sulfonated polymers with DS>1.2 were water soluble at 80° C. Proton conductivity increased with DS and temperature up to 95° C., reaching 10−2 S/Cm.
摘要翻译:通过改性聚(酞嗪酮)制备了一类新颖的质子交换膜材料,磺化聚(2,3-二氮杂萘酮)。 使用95-98%浓硫酸和27-33%发烟硫酸的混合物在室温下进行磺化反应,以使得具有0.6-1.0的磺化度(DS)的SPPEK。 通过FT-IR分析证实磺酸基团的存在,并通过NMR表征DS和结构。 在聚合物链中引入磺基导致玻璃化转变温度的升高和分解温度的降低。 从N,N-二甲基甲酰胺或N,N-二甲基乙酰胺中的溶液中浇铸膜膜。 DS的吸水率和溶胀比随DS增加,DS> 1.2的磺化聚合物在80℃水溶性,质子传导率随DS升高,达到95℃,达到10-2 S / Cm。
摘要:
A poly(phthalazinone sulfone) composition for molded articles having such characteristics as high temperature resistance, good electrical properties, good chemical and solvent resistance and toughness consists essentially of a polymer of formula (I): Cp-ZxA-Zy (I) wherein Z is a bisphenyl sulfone moiety of formula: (II): A is a phthalazinone moiety of formula (III): Cp is A, as defined above, or a biphenol moiety of formula (IV): x is an integer of at least 1; y is an integer of at least 1; and x+y=n, where n is an integer such that the polymer has a weight average molecular weight of about 20,000 to about 170,000, the composition comprising less than 5%, by weight, of low molecular weight oligomers; and having a glass transition temperature (Tg) from 225 to 305° C.
摘要翻译:具有耐高温性,良好的电性能,良好的耐化学性和耐溶剂性和韧性等特性的成型体用聚(2,3-二氮杂萘酮砜)组合物基本上由式(I)所示的聚合物组成:其中Z(C)的Cp-ZxA-Zy 是式(II)的双苯基砜部分:A是式(III)的2,3-二氮杂萘酮部分:Cp是如上所定义的A或式(IV)的双酚部分:x是至少为1的整数; y是至少为1的整数; 和x + y = n,其中n是整数,使得聚合物的重均分子量为约20,000至约170,000,该组合物包含小于5重量%的低分子量低聚物; 并具有225〜305℃的玻璃化转变温度(Tg)。
摘要:
A novel class of proton exchange membrane materials, sulfonated poly(phthalazinones), were prepared by modification of poly(phthalazinone). Sulfonation reactions were conducted at room temperature using mixtures of 95-98% concentrated sulfuric acid and 27-33% fuming sulfuric acid with different acid ratios in order to get SPPEK with degree of sulfonation (DS) in the range of 0.6 to 1.0. The presence of sulfonic acid groups was confirmed by FT-IR analysis, and the DS and structures were characterized by NMR. The introduction of sulfonic groups into the polymer chains led to an increase in the glass transition temperature and a decrease in the decomposition temperature. Membrane films were cast from solution in N,N-dimethylformamide or N,N-dimethylacetamide. Water uptakes and swelling ratios of the membrane films increased with DS and sulfonated polymers with DS>1.2 were water soluble at 80° C. Proton conductivity increased with DS and temperature up to 95° C., reaching 10−2S/Cm.