Paper Title:
Nano Composite Membranes of Sulfonated Amine-Poly(ether sulfone)s and SiO2 for Fuel Cell Application
  Abstract

Organic-inorganic Nano composite membranes were prepared by Sulfonated amine-poly(ether sulfone)s (S-APES)s and SiO2. S-APESs were prepared by nitration, reduction and sulfonation of poly(ether sulfone) (ultrason®-S6010). Poly(ether sulfone) was reacted with ammonium nitrate and trifluoroacetic anhydride to produce the nitrated poly(ether sulfone), and was followed by reduction using tin(Ⅱ)chloride and sodium iodide as reducing agents to give the amino-poly(ether sulfone). The S-APES was obtained by reaction of 1,3-propanesultone and the amino-poly(ether sulfone) (NH2-PES) with sodium methoxide. The different degrees of nitration and reduction of poly(ether sulfone) were successfully synthesized by an optimized process. Organic-inorganic nano composite membranes were obtained by mixing S-APES (45 %) with hydrophilic SiO2 (20 nm, 4-10 %) obtained by sol-gel process. Different contents of SiO2 of the S-APES were studied by FT-IR, 1H-NMR spectroscopy, differential scanning calorimetry (DSC), and thermo gravimetric analysis (TGA). Sorption experiments were conducted to observe the interaction of sulfonated polymers with water and methanol. The ion exchange capacity (IEC), a measure of proton conductivity, was evaluated. The nano composite membranes exhibit conductivities (25 °C) from 3.51 x 10-3 to 4.10 x 10-3 S/cm, water swell from 57.25 to 60.50 %, IEC from 0.68 to 0.73 meq/g, and methanol diffusion coefficients from 2.81 x 10-7 to 3.33 x 10-7 cm2/S at 25 °C.

  Info
Periodical
Edited by
Hyungsun Kim, JianFeng Yang, Tohru Sekino, Masakazu Anpo and Soo Wohn Lee
Pages
392-395
DOI
10.4028/www.scientific.net/MSF.658.392
Citation
D. W. Seo, Y. D. Lim, S. H. Lee, M. M. Islam, H. M. Jin, K. H. Lee, H. H. Jang, W. G. Kim, "Nano Composite Membranes of Sulfonated Amine-Poly(ether sulfone)s and SiO2 for Fuel Cell Application", Materials Science Forum, Vol. 658, pp. 392-395, 2010
Online since
July 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dong Hoon Lee, Hye Suk Park, Dong Wan Seo, Whan Gi Kim
Abstract:Novel bisphenol-based wholly aromatic sulfonated poly(ether sulfone-ketone) copolymer and organic-inorganic composite membranes were...
97
Authors: Dong Wan Seo, Young Don Lim, M. S. Islam Mollah, Soon Ho Lee, Sang Ho Moon, Sang Young Pyun, Whan Gi Kim
Abstract:Poly(ether sulfone)s (PES) containing 25-75 mol % valeric acid were prepared with bisphenol A, bis(4-chlorophenyl)sulfone and...
73
Authors: Ming Zhu Yue, Ya Ping Zhang, Yan Chen
Abstract:A series of sulfonated polyimides (SPIs) were synthesized by 1,4,5,8-naphthalene tetracarboxylic dianhydride (NTDA), 2,2′-benzidinedisulfonic...
2779
Authors: Qun Hui Hu, Wen Xiao Wang, Shu Bo Wang, Yu Ming Shang, Min Xu, Jin Hai Wang, Yao Wu Wang
Chapter 03: Organic Chemistry
Abstract:Anion exchange membranes based on poly(aryl ether oxadiazole)s (FPAEO) were prepared by quaternization of bromomethylated FPAEO with N-methyl...
221
Authors: Young Don Lim, Dong Wan Seo, Soon Ho Lee, Md. Awlad Hossain, Hyun Chul Lee, In Seok Jung, Whan Gi Kim
F. Energy Related Materials, Carbon Materials
Abstract:Sulfonated poly (ethersulfone) s (S-PDHTPEs) were prepared from 4,4-(2,2-diphenylethenylidene) bisphenol (DHTPE), 4,4-sulfonyldiphenol,...
416