PET/CA根须状蓬松纳米纤维复合膜的制备及其烹饪油烟过滤性能  

Preparation of PET/CA root hair-like fluffy nanofibrous composite films and their cooking oil fume filtration performance

作　　者：吴婷[1,2] 周伟涛 李勇[1] 韩璐 周飞越[3] 杜姗 WU Ting;ZHOU Weitao;LI Yong;HAN Lu;ZHOU Feiyue;DU Shan(Research Institute of Textile and Clothing Industries,Zhongyuan University of Technology,Zhengzhou 451191,Henan,China;Key Laboratory of Nanofiber Yarn in Textile Industry,Zhengzhou 451191,Henan,China;Key Laboratory of Green Dyeing&Finishing Technology in Zhengzhou,Zhengzhou 451191,Henan,China;Collaborative Innovation Center of Textile and Garment Industry,Zhengzhou 450007,Henan,China)

机构地区：[1]中原工学院纺织服装产业研究院,河南郑州451191 [2]纺织行业纳米纤维纱线重点实验室,河南郑州451191 [3]郑州市绿色染整技术重点实验,河南郑州451191 [4]河南省纺织服装协同创新中心,河南郑州450007

出　　处：《精细化工》2022年第9期1788-1793,共6页Fine Chemicals

基　　金：河南省高等学校青年骨干教师培养计划(2021GGJS108);河南省高等学校重点项目(22A540002);中原工学院骨干教师资助计划(2018XQC03)。

摘　　要：为有效净化烹饪油烟,采用共溶剂静电纺丝技术,通过调控聚酯(PET)和醋酸纤维素(CA)共混质量比,制备了根须状蓬松纳米纤维复合膜。借助SEM、接触角测试仪、热重分析仪及自动滤料测试系统对所制备纤维膜的微观形貌、表面润湿性、热稳定性及油烟过滤性能进行了测定。结果表明,m(PET)∶m(CA)=8∶2制备的纳米纤维复合膜成型良好,具有明显的根须状结构,根须直径约100 nm、根冠直径约300 nm;且堆积蓬松,孔隙率、堆积密度分别达93.85%±0.23%、(0.023±0.001) g/m^(3);与水接触角为154.0°±0.5°,与油接触到油完全吸收仅需2s,具有特殊表面润湿性;纳米纤维复合膜分解温度>300℃;烹饪油烟初始过滤效率达92%,初始过滤阻力仅为36 Pa,且经20次循环测试后,其过滤效率仍≥91%,过滤阻力规律性缓慢上升。A series of electrospun root-like fluffy composite nanofibrous films for efficient filtration of cooking fumes were synthesized using polyester(PET)/cellulose acetate(CA) co-solvent system with different mass ratios.The morphology,surface and interface wettability,thermal stability and cooking fume filtration performance of these obtained films were characterized and analyzed by SEM,contact angle tester,thermal gravimetric analyzer and automatic filter material test system.The results showed the nanofibrous composite film with m(PET)∶m(CA)=8∶2 exhibited obvious root hair-like fluffy structure with a root tip diameter 100 nm,root cap diameter about 300 nm,porosity 93.85%±0.23%,bulk density(0.023±0.001)g/m^(3),and water contact angle 154.0°±0.5°,respectively.Moreover,the composite membrane displayed short oil absorption time 2 s,decomposition temperature >300 ℃,cooking fume initial filtration efficiency 92% and initial filtration pressure drop 36 Pa.The filtration efficiency still remained ≥91% with slow and regular increase in filtration resistance even after being recycled 20 times.

关 键 词：根须状 蓬松结构 静电纺丝 纳米纤维复合膜 油烟过滤 功能材料 

分 类 号：TB383.2[一般工业技术—材料科学与工程]