Jheng, Li-Cheng; Hsu, Chung-Yen; Yeh, Hong-Yi published the artcile< Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications>, Quality Control of 1592-20-7, the main research area is imidazoline quaternized polystyrene copolymer anion exchange membrane fuel cell; anion exchange membranes; fuel cells; imidazoline; polystyrene.
Imidazoline is a five-membered heterocycle derived by the partial reduction of one double bond of the imidazole ring. This work prepared new anion exchange membranes (AEMs) based on imidazoline quaternized polystyrene copolymers bearing N-β-hydroxyethyl oleyl imidazolinium pendent groups to evaluate the application potential for anion exchange membrane fuel cells (AEMFCs). For comparison, an imidazole quaternized polystyrene copolymer was also synthesized. The polymer chem. structure was confirmed by FTIR, NMR, and TGA. In addition, the essential properties of membranes, including ion exchange capacity (IEC), water uptake, and hydroxide conductivity, were measured. The alk. stabilities of imidazolium-based and imidazolinium-based AEMs were compared by means of the changes in the TGA thermograms, FTIR spectra, and hydroxide conductivity during the alk. treatment in 1M KOH at 60°C for 144 h. The results showed that the imidazolinium-based AEMs exhibited relatively lower hydroxide conductivity (5.77 mS/cm at 70°C) but much better alk. stability compared with the imidazolium-based AEM. The imidazolinium-based AEM (PSVBImn-50) retained 92% of its hydroxide conductivity after the alk. treatment. Besides, the fuel cell performance of the imidazolium-based and imidazolinium-based AEMs was examined by single-cell tests.
Membranes (Basel, Switzerland) published new progress about Anion exchange membranes. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Quality Control of 1592-20-7.
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