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基于聚烯硫的高透性超膜,含有卡多片段

Alisa Raeva¹, Dmitry Matveev¹, Nikolay Bezrukov²

¹Center for Progressive Materials and Additive Technologies, Kabardino-Balkarian State University Named after H.M. Berbekov, 360004 Nalchik, Russia.

|March 13, 2024

概括

新的聚烯硫 (PPSU) 共聚合物与甲 (PP) 卡尔多片段创建超膜具有更高的强度和比标准PPSU大1.5-8倍的透率. 这些膜也表现出高染料排斥.

科学领域:

聚合物科学与工程聚合物科学与工程
材料科学材料科学材料科学
膜技术膜技术膜技术

背景情况:

聚烯硫 (PPSU) 是一种用于膜应用的高性能聚合物.
提高PPSU膜的机械强度和透性对于先进的过至关重要.
众所周知,卡多片段可以改善聚合物特性,但它们被纳入用于超膜的PPSU是新的.

研究的目的:

为了合成聚二硫 (PPSU) 的新型共聚合物与甲 (PP) 卡尔多片段.
开发具有高透性的平板超膜,具有改进的机械性能.
研究卡多碎片度对聚合物溶解度,溶液粘度和膜性能的影响.

主要方法:

合成PPSU-PP共聚物的合成.
制造平板板不对称的超膜.
机械强度,聚合物溶解度,溶液粘度,膜透度和染料排斥的表征.

主要成果:

带有cardo碎片的共聚物表现出比商业PPSU更高的1.3倍的机械强度.
增加PP度提高了聚合物在近溶剂中的可溶性,最大可溶性为50mol.%的PP.
膜透率与PP度显著增加,达到85.2L/m2·h·bar) 在90mol.%的PP,比PPSU提高1.5-8倍.
蓝色德克斯特兰 (MW=70,000 g/mol) 的高排斥率 (>99.2%) 得到了实现.

结论:

将cardo碎片纳入PPSU是开发高性能超膜的有效策略.
与未经修改的PPSU相比,合成的PPSU-PP共聚合物产生了具有更高透度和机械强度的膜.
这些新型膜显示了需要高流量和选择性的先进分离过程的潜力.

关键词:

凝固率是指凝固的速度.膜膜膜膜膜膜膜聚凝聚是一种多重凝聚方式.聚乙烯硫为一种聚乙烯硫.拉力强度拉力强度拉力强度超过是一种超过.粘度粘度粘度粘度粘度

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