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化工学报  2015 

P123对聚醚砜纳米纤维膜结构和性能的影响

DOI: 10.11949/j.issn.0438-1157.20150419, PP. 4676-4681

Keywords: 纳米纤维膜,聚合物,P123,溶胀性能,机械性能

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Abstract:

通过静电纺丝法制备了聚醚砜(PES)/聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物(P123,PEO20PPO70PEO20,Ma=5800)纳米纤维膜,考察了P123含量对纺丝液的黏度和表面张力的影响,以及对所制备的纳米纤维膜的结构和性能的影响。实验结果表明:P123含量从3%(质量)增至9%时,其纺丝液的黏度由300mPa·s增至1000mPa·s,表面张力在36.5~37.8mN·m-1范围内;P123改性的PES纳米纤维直径约为360nm,分布均匀,其表面也比较光滑,取向趋于一致;此外,该纳米纤维膜具有良好的机械性能和耐溶胀性能,较大的比表面积(>39m2·g-1),孔隙率,可用作催化剂载体。

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