金属有机框架/聚丙烯纤维基复合材料对化学战剂模拟物的快速降解  

Metal-organic frameworks/polypropylene fiber-based composite for rapid degradation of chemical warfare agent simulants

作　　者：张诗雨 姚依婷 董晨珊 张如全[1,2] 杨红军 顾绍金[1,3] 黄菁菁 杜杰毫[1,3] ZHANG Shiyu;YAO Yiting;DONG Chenshan;ZHANG Ruquan;YANG Hongjun;GU Shaojin;HUANG Jingjing;DU Jiehao(Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan,Hubei 430200,China;College of Textile Science and Engineering,Wuhan Textile University,Wuhan,Hubei 430200,China;College of Materials Science and Engineering,Wuhan Textile University,Wuhan,Hubei 430200,China)

机构地区：[1]武汉纺织大学省部共建纺织新材料与先进加工技术国家重点实验室,湖北武汉430200 [2]武汉纺织大学纺织科学与工程学院,湖北武汉430200 [3]武汉纺织大学材料科学与工程学院,湖北武汉430200

出　　处：《纺织学报》2024年第6期134-141,共8页Journal of Textile Research

基　　金：湖北省自然科学基金项目(2022CFC073);湖北省重点研发项目(2022BAD015)。

摘　　要：为将金属有机框架(MOFs)均匀且稳固地固定在纤维材料表面,创造出柔软且具备自净化防护面料,采用单宁酸-3-氨丙基三乙氧基硅烷(TA-APTES)涂层改性的聚丙烯(PP)非织造布作为载体,通过原位生长法制备高MOFs负载量的纤维基复合材料。借助扫描电子显微镜、红外光谱仪、X-射线衍射仪、X-射线光电子能谱仪等手段对复合材料的表面形貌、组成和化学结构进行表征,并对复合材料的MOFs负载量和表面浸润性进行了分析。结果表明:TA-APTES涂层能够显著提高复合材料中MOFs的负载量,可达20.96%;并且有效提高复合材料的表面湿润性,从而提高其在水溶液中的催化降解效率,实现快速降解化学战剂模拟物4-硝基苯磷酸二甲酯(DMNP),在30 min左右即可实现100%的转化率,其降解半衰期短(4.8 min)。Objective Metal-organic frameworks(MOFs)possess an exceptionally high active specific surface area and exhibit structural and functional diversity,among other characteristics.Studies have shown that MOFs have demonstrated effective degradation of chemical warfare agents.However,the crystal morphology of MOFs powders limits their practical application in catalytic degradation processes.To address this issue,the utilization of a coating modification technique becomes crucial.This technique leverages the adhesion and secondary reactivity of hydrophilic modified coatings to facilitate the in-situ growth of MOFs crystals on the modified polypropylene(PP)surface.This research aims to boost the MOFs loading on the substrate and improve the stability of the MOFs.Overall,this method is significant for developing textiles tailored for the rapid removal of chemical warfare agent simulants.Method PP nonwovens were immersed in a mixed solution of tannic acid(TA)and aminopropyltriethoxysilane(APTES)to prepare TA-APTES coating modified PP nonwovens.The modified PP with the TA-APTES coating was sequentially submerged in the solution of zirconium tetrachloride and 2-aminoterephthalic acid,enabling the in-situ growth of zirconia-based metal-organic frameworks(UiO-66-NH2)on the PP surface to prepare a PP/TA-APTES/UiO-66-NH2(PTAU)fiber-based composite.The surface morphology,composition,and structure of the composite were characterized by scanning electron microscopy,Fourier transform infrared,X-ray diffraction and X-ray photoelectron spectroscopy(XPS),respectively.The loading of MOFs in the composite was characterized by inductively coupled plasma optical emission spectrometry and the wettability of the composite was characterized by static water contact angle test.Moreover,the degradation performance of the composite on chemical warfare agent simulants was evaluated.Results Compared with the unmodified PP,the surface of PP composite modified by TA-APTES coating became rough which is conducive to the growth of MOFs on the surface of

关 键 词：金属有机框架 化学战剂 催化降解 原位生长法 涂层改性 聚丙烯非织造布 

分 类 号：TS102.54[轻工技术与工程—纺织工程]