Metal–organic framework polymer composite enhancement via acyl chloride modification,Polymer International

当前位置： X-MOL 学术 › Polym. Int. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Metal–organic framework polymer composite enhancement via acyl chloride modification
Polymer International ( IF 2.9 ) Pub Date : 2020-10-27 , DOI: 10.1002/pi.6151
Gregory W Peterson _{1,

2} , Hui Wang ₁ , Kathleen Au _{1,

3} , Thomas H Epps _{2,

4}

Affiliation

Ideal mixed‐matrix composites fabricated from metal–organic frameworks (MOFs) and polymers should exhibit good compatibility between components, high adsorptivity, and fast and efficient reactivity. Often, poor compatibility between MOFs and polymers results in interfacial defects, which lead to underperforming materials. In this work the MOF UiO‐66‐NH₂ was modified using various acyl chlorides to tailor MOF compatibility and dispersion within mixed‐matrix composites and electrospun fibers to enable better protective suits and filters. MOF crystal structures were unaffected and high surface areas were present after acyl chloride treatment. Most treated MOFs had increased reactivity towards soman (GD) and the simulant dimethyl p‐nitrophenylphosphate relative to the baseline MOF, and this enhanced reactivity was probably because of better wetting behavior towards the agents. Chlorine and 2‐chloroethyl ethyl sulfide uptake of modified MOFs was similar to uptake in the baseline MOF, while nitrogen dioxide and GD sorption capacity decreased for all modified MOFs due to exhaustion of amine sites and pore blockage, respectively. Overall, modification of the MOF with acyl chlorides resulted in better polymer compatibility, retained adsorption capacity for multiple chemicals and even increased reactivity towards GD. The structure–activity processing insights gained from this work will lead to the design of more effective protection equipment such as filters, clothing/suits and membranes. Published 2020. This article is a U.S. Government work and is in the public domain in the USA

中文翻译：

通过酰氯改性的金属-有机骨架聚合物复合材料的增强

由金属有机骨架（MOF）和聚合物制成的理想混合基质复合材料应在组分之间表现出良好的相容性，高吸附性以及快速有效的反应性。通常，MOF与聚合物之间的相容性差会导致界面缺陷，从而导致材料性能不佳。在这项工作中，使用各种酰氯对MOF UiO-66-NH ₂进行了改性，以调整MOF在混合基质复合材料和电纺纤维中的相容性和分散性，从而实现更好的防护服和过滤器。酰氯处理后，MOF晶体结构不受影响，并且存在高表面积。大多数处理过的MOF对梭曼（GD）和模拟二甲基p具有增强的反应性-硝基苯基磷酸酯相对于基准MOF，这种增强的反应性可能是由于对试剂的润湿性能更好。修饰MOF的氯和2-氯乙基乙基硫的吸收与基线MOF的吸收相似，而所有修饰MOF的二氧化氮和GD吸附能力分别由于胺位点的耗尽和孔阻塞而降低。总体而言，用酰氯修饰MOF可以提高聚合物的相容性，保留对多种化学物质的吸附能力，甚至提高对GD的反应性。从这项工作中获得的结构-活动处理方面的见解将导致设计更有效的防护设备，例如过滤器，衣物/衣服和膜。出版于2020年。本文是美国政府的工作，在美国属于公共领域

更新日期：2020-10-27

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11