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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : fellow of chinese chemistry society,fellow of chinese chemical engineering society
性别:女
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:高分子材料. 高分子化学与物理. 膜科学与技术
联系方式:0411-84986095(O) Email: zhuxl@dlut.edu.cn
电子邮箱:zhuxl@dlut.edu.cn
Synthesis of fluoro-containing sulfonated poly(phthalazinone ether ketone ketone)s and their properties as PEM in PEMFC and DMFC
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论文类型:期刊论文
发表时间:2009-01-20
发表刊物:JOURNAL OF MEMBRANE SCIENCE
收录刊物:SCIE、EI
卷号:326
期号:2
页面范围:453-459
ISSN号:0376-7388
关键字:Phthalazinone; Proton exchange membrane; Methanol permeability; Proton conductivity
摘要:A series of sulfonated poly(ether ketone ketone)s (SPPFEKKs) containing both of phthalazinone and hexafluoroisopropylidene moieties were synthesized by direct nucleophilic polycondensation reaction from 4-(4-hydroxyphenyl)-1(2H)-phthalazinone (DHPZ), 4,4-hexafluoroisopropylidene-diphenol (BPAF), 1,4bi(4-fluorobenzoyl) benzene (DFKK) and 1,4-bi(3-sodium sulfonate4-fluorobenzoyl) benzene (SDFKK). The obtained SPPFEKKs had high molecular weight with inherent viscosity ranged from 1.29 to 1.53 dL/g and their chemical structure was characterized by Fr-IR and (1)H NMR. The ionic membranes of SPPFEKKs showed high proton conductivity, for instance, SPPFEKK-120 (DS = 1.20) demonstrated 1.0 x 10(-1) S/cm proton conductivity at 95 degrees C, which was very close to that of Nafion (R) 117. All the SPPFEKK membranes exhibited methanol permeability lower than 2.76 x 10(-1) cm(2)/s, which was much lower than that of Nafion (c) 117 (2.38 x 10(-6) cm(2)/s). These copolymers also showed excellent thermal stability and good solubility in aprotic polar organic solvents. The ionic membranes of SPPFEKK demonstrated tensile strength varied from 57 to 69 MPa depending on their DS. (c) 2008 Elsevier B.V. All rights reserved.