Phu Duong Sang, Lee Chang Hyun, Park Chi Hoon, Lee So Young, Lee Young Moo
School of Chemical Engineering, College of Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Korea.
Macromol Rapid Commun. 2009 Jan 2;30(1):64-8. doi: 10.1002/marc.200800496. Epub 2008 Nov 18.
With a view towards direct methanol fuel cell applications, novel sulfonated poly(phenylene sulfide sulfone nitrile) (sPPSSfN) has been prepared and subsequently crosslinked by a Friedel-Craft reaction using 4,4'-oxybis(benzoic acid) as a crosslinker to achieve lower water swelling and lower methanol permeability. The dimensional change of SPPSSfN40 is 43.7% in 90 °C liquid water but that of the crosslinked membrane, XsPPSSfN40, is 23.3% while maintaining proton conductivity at 0.22 S · cm(-1) . These results show that the Friedel-Craft crosslinking of the novel sPPSSfN membrane effectively reduces water uptake and the degree of swelling while improving the dimensional stability and maintaining high proton conductivity.
为了用于直接甲醇燃料电池，制备了新型磺化聚苯硫醚砜腈（sPPSSfN），随后使用4,4'-氧双（苯甲酸）作为交联剂通过傅-克反应进行交联，以实现较低的水溶胀率和较低的甲醇渗透率。SPPSSfN40在90°C液态水中的尺寸变化为43.7%，而交联膜XsPPSSfN40的尺寸变化为23.3%，同时保持质子传导率为0.22 S·cm⁻¹。这些结果表明，新型sPPSSfN膜的傅-克交联有效地降低了吸水率和溶胀程度，同时提高了尺寸稳定性并保持了高质子传导率。
