为了获得高效低阻、绿色环保的空气滤膜,采用熔体微分静电纺丝技术制备聚乳酸(PLA)/乙酰柠檬酸三丁酯(ATBC)(PLA/ATBC)空气滤膜,通过加入增塑剂ATBC改善熔体流动性,制得直径均匀的纳米纤维,并重点研究了空气过滤性能。研究结果表明:随着ATBC用量的增加,纤维膜结构由松散趋于紧实,纤维直径呈先减小后小幅度增加的趋势;ATBC用量为10%(wt,质量分数)条件下,纤维平均直径为0.42μm,制得的PLA/ATBC空气滤膜对粒径大于等于0.3μm的颗粒的稳态过滤效率最高达99.95%,过滤阻力为195.2Pa,具有较好的应用前景。
In order to obtain a high-efficiency,low-resistance,environmentally-friendly air filter membrane,PLA/ATBC air filter membrane was prepared by melt differential electrospinning technology,and the melt fluidity was improved by adding a plasticizer ATBC to obtain a nanofiber having a uniform diameter.The air filtration performance was mainly studied.The results shown that with the increase of ATBC mass fraction,the membrane structure was tend to be loose and firm,and the fiber diameter decreased first and then increased slightly.When the ATBC mass fraction was 10%,the average fiber diameter was 0.42μm.The steady-state filtration efficiency of particles with particle size greater than or equal to 0.3μm was up to 99.95%.The filter with ATBC mass fraction of 15% had lower steady-state pressure drop and higher steady-state filtration efficiency.The filter had a good application prospect.
[1] 曹鼎,付志峰,李从举.静电纺丝技术在过滤中的应用进展[J].化工新型材料,2011,39(8):15-18.
[2] 李莘,徐阳,王爱民,等.熔体静电纺PET复合过滤材料的制备及性能研究[J].工程塑料应用,2013,41(12):8-11.
[3] 徐浩,陈龙,孙俊芬,等.PSA纳米纤维毡的制备和性能[J].合成纤维工业,2017,40(2):42-45.
[4] 皇甫晨晨,邓炳耀,刘庆生.静电纺聚丙烯腈复合滤料的制备与性能[J].化工新型材料,2016,44(12):226-228.
[5] Nayak R,Kyratzis I L,Truong Y B,et al.Melt-electrospinning of polypropylene with conductive additives[J].Journal of Materials Science,2012,47(17):6387-6396.
[6] Kenawy E R,Bowlin G L,Mansfield K,et al.Release of tetracycline hydrochloride from electrospun poly(ethylene-co-vinylacetate),poly(lactic acid),and a blend[J].Journal of Controlled Release,2015,81(1):57-64.
[7] 倪冰选,杨欣卉,张鹏.静电纺纳米纤维复合梯度型空气过滤材料的研究进展[J].合成纤维工业,2017,40(6):47-52.
[8] 丁彬,斯阳,俞建勇.静电纺纳米纤维材料在环境领域中的应用研究进展[J].中国材料进展,2013,32(8):492-512.
[9] 余承涛,韩理理,包建娜,等.不同构型聚乳酸共混体系的立构复合结晶研究进展[J].化工学报,2016,67(2):390-396.
[10] Li H,Chen H,Zhong X,et al.Interjet distance in needleless melt differential electrospinning with umbellate nozzles[J].Journal of Applied Polymer Science,2014,131(15):338-347.
[11] Ma X,Zhang L,Tan J,et al.Continuous manufacturing of nanofiber yarn with the assistance of suction wind and rotating collection via needleless melt electrospinning[J].Journal of Applied Polymer Science,2017,134(20):44820-44824.
[12] Chen H,Li H,Ma X,et al.Large scaled fabrication of microfibers by air-suction assisted needleless melt electrospinning[J].Fibers & Polymers,2016,17(4):576-581.
[13] 简小平.非织造布空气过滤材料过滤性能的研究[D].上海:东华大学,2013.
[14] 王珊.聚偏氟乙烯/聚四氟乙烯复合驻极纳米纤维膜的制备及其空气过滤性能研究[D].上海:东华大学,2017.
[15] 杨卫民.高分子材料先进制造的微积分思想[J].中国塑料,2010,24(7):1-6.
基金资助
国家自然科学基金(51603009);国家重点研发计划(2016YFB0302000)
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