摘要
将玉米醇溶蛋白溶解于不同配比的乙醇/水溶剂中,通过静电纺丝技术制备微纳米非织造材料;通过溶剂熏蒸处理该材料,研究玉米醇溶蛋白微纳米非织造材料的纤维形貌对空气过滤性能的影响。当溶剂中乙醇与水的质量比为6∶4时,玉米醇溶蛋白纤维截面呈圆形,纤维呈圆柱状;当乙醇与水的质量比大于6∶4时,玉米醇溶蛋白纤维截面呈椭圆扁平状,且纤维呈自转曲的带状;当乙醇与水的质量比为7∶3时,带状纤维膜平均孔径最小、空气滤效最高。在纺丝时间相同情况下,与圆柱状纤维膜相比,带状纤维膜的厚度增加76.19%,孔隙率提高37.59%,滤效提高3.85%,滤阻下降72.63%,品质因数提高334.72%。熏蒸处理后带状纤维膜断裂强度提高约5倍。该非织造材料能有效去除甲醛,可为静电纺玉米醇溶蛋白纤维在高效低阻的多功能空气过滤领域的应用奠定基础。
In order to realize that the air filter can not only capture fine particles but also remove harmful gases under low resistance,zein micro/nano nonwovens were prepared by electrospinning with spinning solution with different composition solvent(mixture of ethanol and water)ratio under the same conditions and the material was fumigated by the solvent to study the effects of the nonwovens with different morphology on the air filtration performance.6∶4 zein solution(the mass ratio of ethanol/water is 6∶4)gave rise to the zein fiber with a straight rod-like morphology,while the 6∶4 and above zein solution(the mass ratio of ethanol/water was greater than 6∶4)yielded the zein fiber with a self-curved ribbon-like morphology.Therein,the 7∶3 zein solution gave the membranes the smallest pore size and the highest air filtration efficiency.The results show that under the same spinning time,compared with the rod-like membranes,the thickness of ribbon-like membranes increase by 76.19%,the porosity improve by 37.61%,the filtration efficiency increase by 3.85%while the filtration resistance decrease by 72.63%,and the quality factor enlarge by 334.72%.After fumigation,the breaking strength of the ribbon fiber membrane increase by ca.5 times.In addition,zein micro/nano nonwovens can effectively remove formaldehyde,which lays a foundation for the application of electrospun zein fiber in the field of multifunctional air filtration with high efficiency at low resistance and harmful gases removal.Zein was dissolved in different ratios of ethanol/water solvents to prepare micro/nano nonwoven materials by electrospun technology.The material was treated by solvent fumigation to study the effect of fiber morphology of zein micro/nano nonwoven materials on the air filtration performance.When the mass ratio of ethanol to water in the solvent was 6∶4,the cross-section of zein fibers was round and the fibers showed rod-like morphology.When the mass ratio of ethanol to water was greater than 6∶4,the cross-section of zein fibers was elliptical and flat,and the fibers showed a self-rotating curved ribbon-like morphology.When the mass ratio of ethanol to water was 7∶3,the ribbon-like fiber membrane had the smallest average pore size and the highest air filtration efficiency.The thickness of the ribbon-like fiber membrane increases by 76.19%and the porosity increases by 37.59%,while the filtration efficiency increases by 3.85%,the filtration resistance decreases by 72.63%and the quality factor increases by 334.72%compared with the rod-like fiber membrane under the same spinning time.The breaking strength of the fumigation-treated ribbon-like fiber membrane increased by about 5 times.The zein micro/nano nonwoven material can effectively remove formaldehyde,laying the foundation for the application of electrospun zein fiber in the field of multifunctional air filtration with high efficiency and low resistance.
作者
鲁谦之
张正男
段书霞
田崇
靳向煜
赵奕
LU Qianzhi;ZHANG Zhengnan;DUAN Shuxia;TIAN Chong;JIN Xiangyu;ZHAO Yi(Engineering Research Center of Technical Textiles,Ministry of Education,Donghua University,Shanghai 201620,China;College of Textiles,Ministry of Education,Donghua University,Shanghai 201620,China;Henan Key Laboratory of Medical and Protective Products,Xinxiang 453400,Henan,China;Henan Yadu Holding Group Co.,Ltd.,Xinxiang 453400,Henan,China)
出处
《东华大学学报（自然科学版）》
CAS
北大核心
2023年第3期46-52,共7页
Journal of Donghua University(Natural Science)
基金
中央高校基本科研业务费专项资金(2232020G-06)
河南省医用防护用品重点实验室资助(YD2021002)
关键词
玉米醇溶蛋白
静电纺
纤维膜
空气过滤
形貌调控
甲醛去除
zein
electrospinning
fiber membrane
air filtration
morphology control
formaldehyde removal
