Ternary cross-linked PVA-APTES-ZIF-90 membrane for enhanced ethanol dehydration performance
Ternary cross-linked PVA-APTES-ZIF-90 membrane for enhanced ethanol dehydration performance
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三元交联 PVA-APTES-ZIF-90 膜，增强乙醇脱水性能
DOI：
10.1007/s42114-021-00218-z
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发表时间：
2021-03
影响因子：
20.1
通讯作者：
Yan Wang
中科院分区：
文献类型：
--
作者：
Tengyang Zhu;Xiaoxu Zhao;Ming Yi;Sheng Xu;Yan Wang
为了消除杂化膜中聚合物基质与无机填料之间的界面缺陷，人们提出了各种策略，如改性膜材料或优化成膜工艺等。在这项工作中，三元交联PVA- aptes - zif -90 （PVA，聚乙烯醇）；apt, 3-aminopropyltriethoxysilane;为了消除PVA和ZIF-90之间的界面缺陷，提高乙醇脱水性能，开发了ZIF-90（咪唑酸分子筛框架-90）膜，其中APTES作为共价连接桥接PVA和ZIF-90同时交联。利用各种表征技术对所得膜的形态和理化性质进行了表征。此外，我们还探讨了[ZIF-90]/[APTES]摩尔比和[ZIF-90]/[APTES]负载对三位一体膜分离性能的影响。结果表明，由于PVA、APTES和ZIF-90之间的三元交联作用，ZIF-90颗粒在PVA-APTES-ZIF-90三联膜中的分散性和相容性优于PVA/ZIF-90杂化膜。与原始PVA膜相比，PVA-APTES-ZIF-90三位一体膜具有更强的抗膨胀性能和力学性能，分离性能更优异，这是交联剂APTES和ZIF-90颗粒掺入的结果。优化后的PVA-APTES-ZIF-90三位一体膜的分离系数提高了215.4%，达到552，总通量为82 g/m2h。因此，交联剂、无机填料和聚合物链之间的三元交联是制备高分离性能聚合物基杂化膜的可行策略。摘要：以APTES为共交联剂的新型三元交联杂化膜用于ZIF-90和PVA的高效脱水
To eliminate the interfacial defects between polymeric matrix and inorganic fillers in hybrid membranes, various strategies have been proposed by modifying membrane materials or optimizing membrane formation process. In this work, a ternary cross-linked PVA-APTES-ZIF-90 (PVA, poly(vinyl alcohol); APTES, 3-aminopropyltriethoxysilane; ZIF-90, zeolitic imidazolate framework-90) membrane was developed to eliminate interfacial defects between PVA and ZIF-90 for enhanced ethanol dehydration performance, where APTES served as a covalently linked bridge to cross-link PVA and ZIF-90 simultaneously. The morphologies and physicochemical properties of the resultant membranes were characterized by various characterization techniques. Moreover, we also explored the effects of [ZIF-90]/[APTES] mole ratio and [ZIF-90]/[APTES] loading on the separation performance of the trinity membranes. The results indicated that ZIF-90 particles showed better dispersion and compatibility in PVA-APTES-ZIF-90 trinity membranes than in PVA/ZIF-90 hybrid membrane, attributed to the ternary cross-linking among PVA, APTES, and ZIF-90. Compared with pristine PVA membrane, PVA-APTES-ZIF-90 trinity membranes showed stronger anti-swelling and mechanical properties, as well as more excellent separation performance, which resulted from the incorporation of cross-linker APTES and ZIF-90 particles. The separation factor of the optimal PVA-APTES-ZIF-90 trinity membrane was improved by 215.4%, up to 552, accompanied by a total flux of 82 g/m2h. Ternary cross-linking among cross-linker, inorganic filler, and polymeric chain is therefore believed to be a feasible strategy in preparing polymeric-based hybrid membranes with high separation performance.Graphical abstractSummary: A novel ternary cross-linked hybrid membrane with APTES as co-cross-linkers of ZIF-90 and PVA for efficient ethanol dehydration
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影响因子：
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