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首页> 外文期刊>Journal of Applied Polymer Science >Sulfonated poly(styrene)s-PBIOO? blend membranes: Thermo-oxidative stability and conductivity
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Sulfonated poly(styrene)s-PBIOO? blend membranes: Thermo-oxidative stability and conductivity

机译：磺化聚苯乙烯-PBIOO？共混膜：热氧化稳定性和电导率

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摘要

Low-cost polymers poly(styrene) and poly(α-methylstyrene) have been sulfonated followed by blending with PBIOO? (30 wt % sulfonated ionomer, 70 wt % PBIOO). At this polymer ratio the sulfonated ionomer served as the macromolecular acidic cross-linker which led to enhancement of the PBIOO stability. Both membrane types were treated with Fenton's Reagent to investigate their resistance to oxidation and radical attack. Indeed, the blend membranes showed enhanced stability in oxidative conditions compared to the pure PBIOO membranes. Furthermore, the sulfonated poly(α-methylstyrene)-PBIOO blend membrane showed less weight loss during and after Fenton's Test than the corresponding poly(styrene sulfonic acid)-PBIOO membrane. Assuming all the characteristics of the blend membrane before and after the Fenton's Test, we concluded for a partial degradation of both sulfonated poly(styrene)s, whereas they remain in the blend membrane matrix due to the acid-base crosslinking. Thus, since the sulfonated poly((α-methyl)styrene)-PBIOO blend membranes conserved their integrity even after Fenton's Test they can be regarded as potential low-cost high-T fuel cell membranes.
机译：低成本的聚合物聚（苯乙烯）和聚（α-甲基苯乙烯）已被磺化，然后与PBIOO？ （30重量％的磺化离聚物，70重量％的PBIOO）。在该聚合物比率下，磺化离聚物用作大分子酸性交联剂，这导致PBIOO稳定性的增强。两种膜均用Fenton试剂处理，以研究其抗氧化和自由基攻击的能力。实际上，与纯PBIOO膜相比，共混膜在氧化条件下显示出增强的稳定性。此外，磺化的聚（α-甲基苯乙烯）-PBIOO共混膜在芬顿试验期间和之后显示出比相应的聚（苯乙烯磺酸）-PBIOO膜更小的重量损失。假设在Fenton试验之前和之后共混膜的所有特性，我们得出结论，两种磺化聚苯乙烯均会部分降解，而由于酸碱交联，它们保留在共混膜基质中。因此，由于磺化的聚（（α-甲基）苯乙烯）-PBIOO共混膜即使在芬顿试验后仍能保持其完整性，因此可以认为是潜在的低成本高T燃料电池膜。

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