摘要
以酪蛋白和聚乙烯醇为原料,基于正交试验设计,运用静电纺丝技术纺制纳米蛋白纤维膜。研究聚乙烯醇质量分数固定时,酪蛋白质量分数、纺丝电压和接收距离等参数对纳米纤维膜成膜性的影响。分别应用透射电镜、透气性测试、傅里叶红外光谱、X射线衍射、比表面积和孔隙率测试等手段研究纤维膜微观结构、透气性、成膜性及稳定性。结果表明:所制备的纳米纤维膜为介孔结构,具有良好的孔隙率与比表面积;酪蛋白质量分数对纤维膜为主要影响因素,接收距离和纺丝电压为次要影响因素;酪蛋白与PVA分子之间以氢键结合,随着酪蛋白质量分数提升,氢键和结晶度发生变化,结合更紧密但纤维膜无序且多晶粒排列,成膜性逐渐下降。由正交试验得出,酪蛋白质量分数为5%,纺丝电压为27 kV,接收距离为9 cm时纺制的纳米纤维膜具备良好成膜性、且微观结构均匀、稳定性好。
Based on the orthogonal experiment designed,casein and polyvinyl alcohol were used as raw materials to spin the nanofiber membrane by electrospinning.The effects of casein concentration,spinning voltage and receiving distance on the film formation of nanofiber films with fixed polyvinyl alcohol content were studied.The microstructure,permeability,film formation and stability of the fiber membrane were investigated by transmission electron microscopy,permeability test,Fourier transform infrared spectroscopy,X-ray diffraction,specific surface area and porosity test.The results show that the nanofiber membrane has a mesoporous structure and has good porosity and specific surface area.Casein concentration is the main influence on the fiber membrane,receiving distance and spinning voltage are the secondary influence.Casein and PVA molecules are bonded by hydrogen bonds.With the increase of casein concentration,hydrogen bonds and crystallinity change,and the binding is closer,but the fiber membrane is disorderly and multi-grain arrangement,and the film-forming property gradually decreases.Orthogonal experiments show that the nanofiber membranes have good film formation,uniform microstructure and stability when the concentration of casein iS5%,the spinning voltage iS27 kV and the receiving distance is 9 cm.
作者
张思远
高晓平
胡海娜
杨博琛
康乐
ZHANG Siyuan;GAO Xiaoping;HU Haina;YANG Bochen;KANG Le(Inner Mongolia University of Technology,Hohhot,Inner Mongolia 010081,China)
出处
《毛纺科技》
CAS
北大核心
2022年第5期9-15,共7页
Wool Textile Journal
关键词
纳米蛋白纤维膜
成膜性
正交试验设计
介孔结构
酪蛋白
Nano protein fiber membrane
film forming property
orthogonal experimental design
mesoporous structure
casein
