A phase inversion process is used to fabricate composite beads from the metal–organic framework (MOF) UiO‐66‐NH₂ and the elastomeric block copolymer poly(styrene‐block‐ethylene‐ran‐butylene‐block‐styrene) (SEBS) for improved performance over activated carbon‐based protective textiles. Textiles incorporating the best MOF‐composite materials reduced steady‐state permeation of the chemical warfare agent (CWAs) simulant, 2‐chloroethyl ethyl sulfide (CEES), by ≈60% versus activated carbon cloth. Additionally, the protection capabilities of the composite beads could be further tuned by adjusting bead size—textiles fabricated from smaller composite beads show enhanced diffusional properties whereas textiles generated from larger beads maximize protective capacity. The elastomeric beads also do not exhibit any attrition when subjected to a hardness test, whereas traditional pressing techniques result in materials with only a 20% retention of particle size. Furthermore, composites with increasing MOF content result in enhanced chemical capacity and reactivity, with the best composite outperforming activated carbon cloth against the CWAs soman (91% versus 17% reacted, respectively) and mustard (97% versus 0% reacted, respectively) over 24 h. The 80 wt% samples also have ≈1.4 and 2.2× higher adsorption capacity for soman and CEES, respectively, versus carbon cloth. Finally, mixing multiple MOFs results in optimal composites for the simultaneous filtration of chlorine and ammonia.

中文翻译：

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弯曲但不断裂：弹性相转化聚合物制成的反应性金属有机骨架复合材料

相转化工艺用于从金属-有机构架（MOF）UIO-66-NH制造复合珠₂和弹性体嵌段共聚物的聚（苯乙烯-嵌段-亚乙基-跑-butylene-块-苯乙烯）（SEBS），以提高其性能，优于活性炭基防护纺织品。与活性炭布相比，采用最佳MOF复合材料的纺织品将化学战剂（CWA）模拟物2-氯乙基乙基硫化物（CEES）的稳态渗透降低了约60％。此外，可以通过调节珠子尺寸来进一步调整复合材料珠的保护功能-由较小的复合材料珠制成的纺织品显示出增强的扩散性能，而由较大的珠子生成的纺织品则可以最大化保护能力。弹性体珠粒在进行硬度测试时也不会表现出任何磨损，而传统的压制技术导致材料的粒度保留率仅为20％。此外，MOF含量增加的复合材料可增强化学容量和反应活性，在24小时内，最好的复合材料在活性成分方面优于CWA梭曼梭曼（分别为91％和17％）和芥末（分别为97％和0％）。 。80％（重量）的样品对梭曼和CEES的吸附能力也分别比碳布高约1.4和2.2倍。最后，混合多个MOF会得到最佳的复合材料，用于同时过滤氯和氨。