面向长效主动捕尘的界面立构复合化聚乳酸纳米纤维研究  

Study on Interfacial Stereocomplex Polylactic Acid Nanofibers for Long-Term Active Dust Capture

作　　者：吕英华 宋欣译 唐梦珂 王存民 李欣雨 徐煜坤 郭震 陈曦 朱金佗[2] 徐欢 LU Yinghua;SONG Xinyi;TANG Mengke;WANG Cunmin;LI Xinyu;XU Yukun;GUO Zhen;CHEN Xi;ZHU Jintuo;XU Huan(Shendong Coal Group Co.,Ltd.,CHN Energy Group,Yulin 719315,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China;Beijing Innowind Aerospace Equipment Co.,Ltd.,Beijing 100854,China)

机构地区：[1]国能神东煤炭集团有限责任公司,陕西榆林719315 [2]中国矿业大学安全工程学院,江苏徐州221116 [3]中国矿业大学材料与物理学院,江苏徐州221116 [4]北京新风航天装备有限公司,北京100854

出　　处：《金属矿山》2025年第2期247-255,共9页Metal Mine

基　　金：国家重点研发计划项目(编号:2023YFC3011704);中央高校基本科研业务费专项资金项目(编号:2024-10958,2024-10967);2024江苏省研究生科研创新计划项目(编号:KYCX24_2917,KYCX24_2914,KYCX24_2937);国家能源集团井工煤矿粉尘与职业病防治研究(六)煤矿粉尘防护装备研发项目(编号:E210100285);中国矿业大学研究生创新计划项目(编号:2024WLJCRCZL195,2024WLKXJ143,2024WLKXJ140)。

摘　　要：为解决矿山粉尘等有害颗粒物对工人健康及环境的严重影响,提出了利用三同轴静电纺丝制备界面立构复合化聚乳酸(PLA)纳米纤维膜(NFMs)以提高过滤效率,将氨基化MOF(NH_(2)-UiO-66)锚入核壳结构纤维的中间层,促进左旋聚乳酸(PLLA)及右旋聚乳酸(PDLA)形成界面立构复合化,制备了超细直径的具有高过滤效率和低空气阻力的立构复合化聚乳酸纤维。试验结果表明:NH_(2)-UiO-66的锚入使纤维显著细化至118 nm,表面电位提升至17.8 kV,介电性能增强至1.8;PLA NFMs的摩擦电输出性能表现出优异的静电荷可再生能力,其输出电压达54 V,输出电流达120 nA;即使在85 L/min的高流量下,PLA NFMs对PM_(0.3~2.5)的过滤效率也可达99.9%,空气阻力约60 Pa。NH_(2)-UiO-66加强的界面立构复合化PLA NFMs在实现高效低阻、PMs长效捕集方面具有巨大潜力,可为矿山粉尘防治提供可靠的材料选择。In order to solve the serious impact of harmful particles such as mine dust on workers'health and environment,it is proposed to use tri-coaxial electrospinning to prepare interfacial stereocomplex polylactic acid(PLA)nanofiber membranes(NFMs)to improve filtration efficiency.The amino-functionalized MOF(NH_(2)-UiO-66)was anchored into the middle layer of the core-shell structure fiber to promote the formation of interfacial stereocomplexation between PLLA and PDLA,and the ultra-fine diameter stereocomplexed polylactic acid fiber with high filtration efficiency and low air resistance was prepared.The experimental results show that the anchoring of NH_(2)-UiO-66 significantly refines the fiber to 118 nm,increases the surface potential to 17.8 kV,and enhances the dielectric properties to 1.8.The triboelectric output performance of PLA NFMs shows excellent electrostatic charge regeneration ability,with an output voltage of 54 V and an output current of 120 nA.Even at a high flow rate of 85 L/min,the filtration efficiency of PLA NFMs for PM_(0.3~2.5) can reach 99.9%,and the air resistance is about 60 Pa.NH_(2)-UiO-66 reinforced interfacial stereocomplex PLA NFMs have great potential in achieving high efficiency,low resistance and PMs long-term capture,which can provide reliable material selection for mine dust control.

关 键 词：聚乳酸 纳米纤维膜 氨基化MOF 界面立构复合化 PMS 捕集 

分 类 号：TB332[一般工业技术—材料科学与工程]