以六氟双酚A（HFBPA）、9,9′-双（4-羟苯基）芴（BHPF）、4,4′-二氟二苯砜及3,3′-二磺酸钠-4,4′-二氟二苯砜为原料,经高温缩聚成功合成了一系列磺化聚芳醚砜（SPAES）,并通过改变BHPF及HFBPA的比例来调节聚合物主链的刚性。结果表明,随刚性组分BHPF含量的增加,SPAES膜吸水率及质子导电率降低、但在水中的稳定性增加。在BHPF与HFBPA的比例为1∶1及磺化度为50%（SPAES50-50）条件下,膜在60℃水中平面和厚度方向的尺寸变化分别为0.12和0.13,电导率达到0.137 S/cm,而经130℃高温水处理200 h后的失重率仅为7%,表明其有望在高温燃料电池中得到应用。
A series of novel sulfonated poly （arylene ether sulfone） （SPAES） copolymers were successfully synthesized from 6F-bisphenol A （HFBPA）, 9,9＇-bis （4-hydroxyphenyl） fluorine （BHPF）, 4,4＇-difluorodiphenyl sulfone （DFDPS） and 3, 3＇-disulfonate-4, 4＇-difluorodiphenyl sulfone （SDFDPS） via high temperature copolymerization. The rigidness in the polymer backbone was controlled by the ratio of BHPF to HFBPA. As the increase in the ratio of BHPF, the SPAF~S membranes display increased stability towards water but lower water uptake and proton conductivity. The membrane of SPAESS0-50 （BHPF/HFBPA 50/50 in molar ratio and 50% sulfonation degree） exhibits dimensional change of 0.12 and 0.13 in the plane and thickness direction, respectively, and proton conductivity of 0. 137 S/cm in water and at 60 ℃, as well as mass loss of 7 % after aging treatment for 200 h in water at 130 ℃, suggesting their potential application in the high temperature fuel cell field.
参考文献
| [1] | Maria Gil;Xiangling Ji;Xianfeng Li;Hui Na;J. Eric Hampsey;Yunfeng Lu .Direct synthesis of sulfonated aromatic poly(ether ether ketone) proton exchange membranes for fuel cell applications[J].Journal of Membrane Science,2004(1/2):75-81. |
| [2] | Michael A.Hickner;Hossein Ghassemi;Yu Seung Kim;Brian R.Einsla;James E.McGrath .Alternative Polymer Systems for Proton Exchange Membranes (PEMs)[J].Chemical Reviews,2004(10):4587-4612. |
| [3] | Harrison WL.;Wang F.;Mecham JB.;Bhanu VA.;Hill M.;Kim YS.;McGrath JE. .Influence of the bisphenol structure on the direct synthesis of sulfonated poly(arylene ether) copolymers. I[J].Journal of Polymer Science, Part A. Polymer Chemistry,2003(14):2264-2276. |
| [4] | Shimura T;Miyatake K;Watanabe M .Poly(arylene ether) ionomers containing sulfofluorenyl groups: Effect of electron-withdrawing groups on the properties[J].European Polymer Journal,2008(12):4054-4062. |
| [5] | Sankir M;Bhanu VA;Harrison WL;Ghassemi H;Wiles KB;Glass TE;Brink AE;Brink MH;McGrath JE .Synthesis and characterization of 3,3 '-disulfonated-4,4 '-dichlorodiphenyl sulfone (SDCDPS) monomer for proton exchange membranes (PEM) in fuel cell applications[J].Journal of Applied Polymer Science,2006(6):4595-4602. |
| [6] | 毕慧平,王佳力,陈守文,胡朝霞,高智琳,张轩,王连军,冈本健一.磺化聚芳醚砜/磺化聚酰亚胺复合质子交换膜的制备与性能研究[J].高分子学报,2010(08):966-972. |
| [7] | Yan Yin;Yoshiki Suto;Takaaki Sakabe;Shouwen Chen;Shunsuke Hayashi .Water Stability of Sulfonated Polyimide Membranes[J].Macromolecules,2006(3):1189-1198. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%