PAN/UiO-66复合电纺纳米纤维膜的制备及表征  

Preparation and Characterization of PAN/UiO-66 Composite Electrospun Nanofiber Membrane

作　　者：邓慧杰 王娇娜[1,2] 李秀艳[1,2] 张聚华[1] DENG Hui-jie;WANG Jiao-na;LI Xiu-yan;ZHANG Ju-hua(Beijing Key Laboratory of Clothing Materials R&D and Assessment,Beijing Engineering Research Center of Textile Nanofiber,Beijing Institute of Fashion Technology,Beijing 100029,China;School of Materials Design&Engineering,Beijing Institute of Fashion Technology,Beijing 100029,China)

机构地区：[1]北京服装学院材料设计与工程学院,北京100029 [2]北京服装学院服装材料研究开发与评价北京市重点实验室北京市纺织纳米纤维工程技术研究中心,北京100029

出　　处：《北京服装学院学报（自然科学版）》2020年第3期1-8,28,共9页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(51503005,21274006);北京市自然科学基金资助项目(2182014);“北京服装学院高水平教师队伍建设专项资金”(BIFTQG201801);北京服装学院创新团队建设计划(BIFTTD201903);北京市科协“金桥工程种子资金”(H2017-42)。

摘　　要：金属-有机框架材料(MOFs)近年得到广泛研究,但不易回收、难处理等缺点使其在实际应用中受到很大限制。通过合适的加工工艺将MOFs加工成型,对促进开发应用很有必要。作为一种可制备杂化微纳米纤维的简单快捷方法,静电纺丝法在制备负载功能粒子的复合膜材料领域得到了迅速发展。通过静电纺丝法将MOFs材料负载在纤维当中,将其加工成纤维膜,并探讨了在纤维膜的制备过程中MOFs掺杂量和纺丝电压两个因素对复合纤维形貌的影响。首先采用溶剂热法,通过对苯二甲酸和锆元素的配位作用,制备出典型的锆基金属-有机框架材料UiO-66(UiO=University of Oslo)。然后,以聚丙烯腈(PAN)和UiO-66为基质,通过静电纺丝技术制备PAN/UiO-66复合纳米纤维膜。采用扫描电子显微镜(SEM)、X-射线衍射(XRD)、傅里叶变换红外光谱分析(FT-IR)和N2吸脱附实验等分析测试技术,对UiO-66和PAN/UiO-66复合纳米纤维膜的表面形貌、结构及比表面积等进行表征分析。结果表明:成功制备出金属-有机框架材料UiO-66和PAN/UiO-66电纺纳米纤维膜;静电纺纯PAN纤维的表面光滑平整,掺杂UiO-66后,纤维表面变得粗糙;随着UiO-66掺杂量的增大,嵌入PAN纤维中UiO-66颗粒量有所增多,同时,纤维直径变小。UiO-66掺杂量为40%的纺丝液在18~22 kV电压下均具有可纺性,所制备纤维的平均直径为150~170 nm。Metal-organic frameworks(MOFs)have been widely studied in recent years.However,their practical applications are largely hindered by the difficulties in recycling and treatment.Therefore,it is important to process MOFs through appropriate processing technology.As a simple and fast method for the preparation of hybrid micro/nano-fiber,electrospinning has been developed rapidly in the field of composite membrane materials for the preparation of loaded functional particles.Here,MOF was loaded into the fibers and processed into membranes by electrospinning.Especially,the influences of MOF doping amount and applied voltage on the morphology of the composite fiber were discussed.Firstly,a kind of typical Zr-containing metal-organic frameworks(MOFs)material,UiO-66,was prepared by solvothermal method through the coordination of terephthalic acid and zirconium.Then,based on polyacrylonitrile(PAN)and UiO-66,PAN/UiO-66 nanofiber membranes were prepared by electrospinning technique.The surface morphology,structure and specific surface area of UiO-66 and PAN/UiO-66 nanofiber membranes were characterized by SEM,XRD,FT-IR,and N2 adsorption-desorption isotherm measurement.The results show that UiO-66 and PAN/UiO-66 electrospinning nanofibers were successfully prepared.The surface of pure PAN fiber is smooth and flat,and become rough after adding UiO-66 into spinning dope.With the loading amount of UiO-66 increasing,the fiber diameter of PAN/UiO-66 decreases and the quantity of UiO-66 embedded in PAN fiber increases.In addition,under the voltage of 18-22 kV,the spinning solution doped with40%UiO-66 has spinnability,and the average diameter of fibers are between 150-170 nm.

关 键 词：金属-有机框架 UiO-66 聚丙烯腈 电纺纳米纤维 

分 类 号：TB34[一般工业技术—材料科学与工程]