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材料工程  2019, Vol. 47 Issue (7): 99-105    DOI: 10.11868/j.issn.1001-4381.2018.000428
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
熔体微分电纺PLA/OMMT可降解纳米纤维膜制备及污染处理
王循1, 丁玉梅1,2, 余韶阳1, 杜琳1, 杨卫民1,2, 李好义1,2, 陈明军1
1. 北京化工大学 机电工程学院, 北京 100029;
2. 北京化工大学 有机-无机复合材料国家重点实验室, 北京 100029
Preparation and pollution treatment of degradable PLA/OMMT nanofiber membrane by melt differential electrospinning
WANG Xun1, DING Yu-mei1,2, YU Shao-yang1, DU Lin1, YANG Wei-min1,2, LI Hao-yi1,2, CHEN Ming-jun1
1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2. State Key Laboratory of Organic-inorganic Composite, Beijing University of Chemical Technology, Beijing 100029, China
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摘要 采用无溶剂的熔体静电纺丝技术制备可降解聚乳酸(PLA)纳米纤维,是一种很有前景和挑战性的绿色制备技术。其制备的纳米纤维膜孔隙率高、吸附能力强,可高效地处理环境污染问题。借助自制的熔体微分电纺装置,在PLA中引入了有机改性蒙脱土(OMMT),在260℃下制备了PLA/OMMT纳米纤维膜。探究了OMMT含量对PLA纤维形貌、吸油性能、空气过滤性能及降解性能的影响,并获得了最佳的OMMT配比含量。研究表明:加入OMMT后PLA热稳定性提高,结晶度大幅降低。OMMT质量分数为2%时制备的纤维,其直径为450nm。该纤维膜吸油倍率为133.5g/g,是市售PP无纺布的4~5倍,保油倍率为84.2g/g,具有良好的重复使用性能。针对粒径≥0.3μm尘埃粒子的空气过滤效率为99.31%,达到欧标H11过滤等级。且相比于纯PLA纤维膜降解性能提高,减少了二次污染,符合工业化绿色环保要求。
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王循
丁玉梅
余韶阳
杜琳
杨卫民
李好义
陈明军
关键词 熔体静电纺丝污染纳米材料吸附过滤降解    
Abstract:Degradable polylactide (PLA) nanofibers can be prepared by solvent free melt electrospinning technology which is promising,challenging and green. The nanofiber membrane prepared by this method have high porosities and strong adsorption capacities,and thus are useful for treating the environmental pollution efficiently. The organic montmorillonite(OMMT) was introduced into PLA, and the PLA/OMMT nanofiber membrane were prepared at 260℃ by using a self-made melt differential electrospinning device. The effect of OMMT content of PLA nanofiber membrane on the morphology,the oil absorption property,the air filtration performance and the degradability was investigated, and the optimum OMMT content was obtained. The research shows that the thermal stability of PLA is increased and the crystallinity of PLA is decreased significantly after adding OMMT. When the OMMT content is 2%,the diameter of the fiber reaches 450nm. The oil absorption rate of the nanofiber membrane is 133.5g/g which is 4-5 times higher than that of commercially available PP non-wovens,and the oil holding rate is 84.2g/g. Moreover,the nanofiber membrane has good reuse performance. The air filtration efficiency of the nanofiber membrane for dust particles(≥ 0.3μm) is 99.31%,reaching the European standard H11 filtration class. The degradation of PLA/OMMT nanofiber membrane is improved comparing with the pure PLA, which reduces the second pollution and accords with the requirements of industrial green environmental protection.
Key wordsmelt electrospinning    pollution    nanomaterials    membrane    adsorption    filtration    degradation
收稿日期: 2018-04-16      出版日期: 2019-07-19
中图分类号:  TQ340.9  
通讯作者: 李好义(1987-),男,讲师,博士,研究方向为高分子材料先进制造,联系地址:北京化工大学机电工程学院(100029),lhy@mail.buct.edu.cn     E-mail: lhy@mail.buct.edu.cn
引用本文:   
王循, 丁玉梅, 余韶阳, 杜琳, 杨卫民, 李好义, 陈明军. 熔体微分电纺PLA/OMMT可降解纳米纤维膜制备及污染处理[J]. 材料工程, 2019, 47(7): 99-105.
WANG Xun, DING Yu-mei, YU Shao-yang, DU Lin, YANG Wei-min, LI Hao-yi, CHEN Ming-jun. Preparation and pollution treatment of degradable PLA/OMMT nanofiber membrane by melt differential electrospinning. Journal of Materials Engineering, 2019, 47(7): 99-105.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.000428      或      http://jme.biam.ac.cn/CN/Y2019/V47/I7/99
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