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原子转移自由基聚合法合成梳型磺化聚醚醚酮
发表时间：2017-06-30 浏览量：1909 下载量：498
| 全部作者： | 谢红梅，吴舒鸿，戴素仪，沈桂燕，黄雪红 |
| 作者单位： | 福建师范大学材料科学与工程学院 |
| 摘 要： | 以二氟二苯甲酮、双酚芴和邻甲基氢醌为单体经缩聚合成聚醚醚酮[poly(ether ether ketone)，PEEK]，PEEK经修饰合成含有异丙基溴侧基的聚醚醚酮，以此为原子转移自由基聚合（atom transfer radical polymerization，ATRP）大分子引发剂，通过ATRP在PEEK主链上接枝引入聚苯乙烯磺酸钠侧链，得到梳状PEEK接枝聚合物（PEEK-g-StSO3Na）。采用傅里叶变换红外光谱（Fourier transform infrared spectroscopy，FTIR）、核磁共振氢谱（1H nuclear magnetic resonance，1H NMR）、热重（thermogravimetry，TG）分析和扫描电子显微镜（scanning electron microscope，SEM）等方法对PEEK-g-StSO3Na的结构进行表征。结果表明，苯乙烯磺酸钠被成功接枝到PEEK主链上，PEEK-g-StSO3Na膜具有明显的亲水疏水微相分离结构。离子交换容量（ion exchange capacity，IEC）为1.41 mmol/g、吸水率为51.9%的PEEK-g-StSO3Na膜的电导率为5.42×10−2 S/cm，与Nafion117膜相当，但该膜的溶胀率为8.16%，低于Nafion117膜的11.50%. 在相同的IEC值下，梳型PEEK-g-StSO3Na比主链型磺化聚醚醚酮（SPEEK）具有更好的H+透过性能。 |
| 关 键 词： | 功能高分子材料；原子转移自由聚合；磺化聚醚醚酮；苯乙烯磺酸钠；离子交换容量 |
| Title： | Synthesis of comb-shaped sulfonated poly(ether ether ketone) by atom transfer radical polymerization method |
| Author： | XIE Hongmei, WU Shuhong, DAI Suyi, SHEN Guiyan, HUANG Xuehong |
| Organization： | College of Materials Science and Engineering, Fujian Normal University |
| Abstract： | Poly(ether ether ketone) (PEEK) was synthesized by aromatic nucleophilic polycondensation reaction of 4,4’-difluorobenzophenone, bisphenol A and 2-methylhydroquinone. Double-arm PEEK macroinitiator containing isopropyl bromide end groups was obtained by bromination. Comb-like PEEK-g-PStSO3Na was successfully synthesized via atom transfer radical polymerization (ATRP) using double-arm PEEK as macroinitiator and sulfonated styrene as monomer. The structure and morphology of PEEK-g-StSO3Na membrane were characterized by Fourier transform infrared spectroscopy (FTIR), 1H nuclear magnetic resonance (1H NMR), thermogravimetry (TG) and scanning electron microscope (SEM). The synthesized PEEK-g-StSO3Na is found to improve hydrophilic/hydrophobic phase separation. The ion exchange capacity (IEC), water content and onductivity of PEEK-g-StSO3Na were 1.41 mmol/g, 51.9% and 5.42×10−2 S/cm, respectively. However, its swelling ratio is 8.16% which is lower than that of Nafion117 membrane (11.50%). Otherwise, comb-shaped PEEK-g-StSO3Na has a better H+ permeability than main-chain sulfonated PEEK (SPEEK) membrane with the same IEC value. |
| Key words： | functional polymer materials; atom transfer radical polymerization; sulfonated poly(ether ether ketone); sodium styrenesulfonate; ion exchange capacity |
| 发表期数： | 2017年6月第12期 |
| 引用格式： | 谢红梅，吴舒鸿，戴素仪，等. 原子转移自由基聚合法合成梳型磺化聚醚醚酮[J]. 中国科技论文在线精品论文，2017，10（12）：1328-1337. |
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