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浙江大学学报(工学版)
浙江大学学报(工学版)  2020, Vol. 54 Issue (1): 196-201    DOI: 10.3785/j.issn.1008-973X.2020.01.023
生物医学工程、化学工程     
悬浮油滴在改性PAN纤维膜上的行为研究
魏颖颖(),姜东岳,付清腾,郭飞*()
大连理工大学 能源与动力学院，辽宁 大连 116024
Behaviors of aerosol oil droplets on modified PAN fibrous webs
Ying-ying WEI(),Dong-yue JIANG,Qing-teng FU,Fei GUO*()
School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
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摘要：

针对大气环境中的气溶胶悬浮油滴的过滤式处理，以PAN纤维膜为实验介质，研究气溶胶油滴在PAN纤维膜及改性处理后的PAN纤维膜上的富集规律和演变的行为. 实验结果表明，油滴在不同表面能的纤维上的结构不同. 油滴在PAN纤维上形成轴对称结构，在改性PAN纤维上形成非轴对称结构. 随着油滴在纤维上的富集，改性PAN纤维上的非轴对称油滴逐渐转变为轴对称油滴. 油滴在改性PAN纤维和PAN纤维上的最终形态都不能铺展形成液膜，而是形成轴对称的油滴. 通过测量纤维膜压力降和液体穿透压可以发现，改性PAN纤维膜相比原始PAN纤维膜，能够避免油滴浸润，具有阻隔油滴侵入纤维膜内部的作用.
关键词： 静电纺丝;  PAN纤维膜;  表面改性;  PM2.5;  气溶胶油滴    
Abstract:

The morphology and evolution of aerosol oil droplets on PAN fibrous webs and modified PAN fibrous webs was analyzed based on the filtration treatment of aerosol suspending oil droplets in the atmosphere. The experimental results show that aerosol oil droplets exhibit different structures and evolution behaviors on fibrous webs with different surface energy. Aerosol oil droplets form axisymmetric structures on PAN fibers and non-axisymmetric structures on modified PAN fibers. Non-axisymmetric structure of aerosol oil droplets on modified PAN fibers switches to axisymmetric structure during the growth of aerosol oil droplets on the fibers. The final structure of aerosol oil droplets on the modified PAN fibers and PAN fibers do not form the liquid film on the fibers, and form large axisymmetric aerosol oil droplets. The pressure drop and the liquid entry pressure of the fibrous membrane were measured. Results show that modified PAN fibrous membrane can prevent aerosol oil droplets from infiltrating compared to original PAN fibrous membranes and have the function of blocking aerosol oil droplets from invading the fibrous membranes.
Key words: electrospinning    PAN fibrous membrane    surface modification    PM2.5    aerosol oil droplet
收稿日期: 2018-11-28 出版日期: 2020-01-05
CLC:  TQ 028  
基金资助: 大连市青年科技之星资助项目（2017RQ027）；中央高校基本科研业务费专项资金资助项目（DUT17JC05）
通讯作者: 郭飞     E-mail: weiyingying@mail.dlut.edu.cn;feiguo@dlut.edu.cn
作者简介: 魏颖颖（1994—），女，硕士生，从事纤维膜及相关应用研究. orcid.org/0000-0003-0902-8125. E-mail： weiyingying@mail.dlut.edu.cn
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魏颖颖
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引用本文:

魏颖颖,姜东岳,付清腾,郭飞. 悬浮油滴在改性PAN纤维膜上的行为研究[J]. 浙江大学学报(工学版), 2020, 54(1): 196-201.

Ying-ying WEI,Dong-yue JIANG,Qing-teng FU,Fei GUO. Behaviors of aerosol oil droplets on modified PAN fibrous webs. Journal of ZheJiang University (Engineering Science), 2020, 54(1): 196-201.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2020.01.023    或    http://www.zjujournals.com/eng/CN/Y2020/V54/I1/196

wB/
% 		v/
（mL·min?1） 		U/kV n/
（r·min?1） 		l/
cm 		t/
μm 		d/μm
正电 负电
11.5 0.02 +18 ?4 40 20 60±2 0.17±0.02
14 0.02 +19 ?4 40 20 64±2 0.32±0.03
18 0.02 +20 ?4 40 20 64±4 0.58±0.01
表 1  静电纺丝参数和纤维膜参数
图 1  引发式化学气相沉积（iCVD）装置示意图
图 2  纤维膜压力降测量装置的示意图
图 3  光学显微镜照片
图 4  气溶胶油滴被不同纤维捕获的光学显微镜照片
图 5  纤维长时间捕捉气溶胶油滴的图像和示意图
图 6  纤维膜压力降和液体穿透压实验数据
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