Physical properties of oriented thin films formed by the electrostatic complexation of sulfonated polyaramid.
作者： Hayley A. Every , Leen V. van der Ham , Stephen J. Picken , Eduardo Mendes
DOI: 10.1021/JP8064618
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摘要: The electrostatic complexation of rigid poly(p-sulfophenylene-terephthalamide) (S-PPTA), which forms needle-like aggregates in solution, with flexible poly(allylamine hydrochloride) (PAH) resulted the formation aligned polymer films. Proton conductivities a 20:1 S-PPTA:PAH complex membrane were found to be strongly dependent on both temperature and humidity, reaching value approximately 0.2 S cm−1 at 90 °C, surpasses that Nafion. In order investigate influence PAH structure S-PPTA films, microscopy X-ray scattering analysis was conducted. Optical polarization images less birefringent for complexed samples than pure S-PPTA, appeared result reduction size ordered domains. However, revealed has almost no effect direction degree alignment film: is homeotropically, where chains are perpendicular th...
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