当前位置:
X-MOL 学术
›
J. Appl. Polym. Sci.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Morphology, physical, and mechanical properties of potentially applicable coelectrospun polysulfone/chitosan‐polyvinyl alcohol fibrous membranes in water purification
Journal of Applied Polymer Science ( IF 3 ) Pub Date : 2020-09-18 , DOI: 10.1002/app.49933 Sanaz Rezaei Soulegani 1 , Zahra Sherafat 1 , Maryam Rasouli 1
Journal of Applied Polymer Science ( IF 3 ) Pub Date : 2020-09-18 , DOI: 10.1002/app.49933 Sanaz Rezaei Soulegani 1 , Zahra Sherafat 1 , Maryam Rasouli 1
Affiliation
Polysulfone (PSU) is a widely used polymer in water purification membranes. However, its hydrophobicity hinders its practical application. Herein, the wettability of PSU has been improved by producing a coelectrospun fibrous composite membrane using a hydrophilic component, chitosan‐polyvinyl alcohol (CS‐PVA). First, different proportions of PVA and CS solutions were mixed and electrospun to prepare CS‐PVA blend fibers. Scanning electron microscope (SEM) observations revealed that CS‐PVA blend fibers with maximum CS content can be obtained in 30:70 CS:PVA weight ratio. The optimum CS‐PVA solution was subsequently used alongside PSU solution and were fed into two distinct syringes, which were then electrospun simultaneously at a constant voltage and distance of 15 kV and 15 cm, respectively. Different composite compositions of PSU/CS‐PVA were achieved using different feeding rates for each solution. Based on SEM images, the prepared composite fibers were beadless. The ultimate strength of the composite mats decreased by increasing the amount of CS‐PVA due to the significant difference in the fiber diameter of each component and the resulting stress concentration. However, the thermal stability of composite membranes remained almost the same as pure PSU fibers. Moreover, samples with higher CS‐PVA content showed better wettability and higher water flux.
中文翻译:
净水中可能适用的电纺聚砜/壳聚糖-聚乙烯醇纤维膜的形态,物理和机械性能
聚砜(PSU)是水净化膜中广泛使用的聚合物。但是,其疏水性阻碍了其实际应用。在此,通过使用亲水性成分壳聚糖-聚乙烯醇(CS-PVA)生产共电纺丝纤维复合膜,可以改善PSU的润湿性。首先,将不同比例的PVA和CS溶液混合并进行电纺丝,以制备CS-PVA共混纤维。扫描电子显微镜(SEM)观察表明,CS:PVA重量比为30:70时,可以获得CS含量最大的CS-PVA混纺纤维。随后将最佳的CS-PVA溶液与PSU溶液一起使用,并注入两个不同的注射器中,然后分别以恒定电压和15 kV和15 cm的距离同时进行电纺。对于每种溶液,使用不同的进料速度可获得不同的PSU / CS-PVA复合成分。基于SEM图像,制备的复合纤维是无珠的。由于每个组件的纤维直径和所产生的应力集中存在显着差异,因此通过增加CS-PVA的量会降低复合材料垫的极限强度。但是,复合膜的热稳定性几乎与纯PSU纤维相同。此外,CS-PVA含量较高的样品表现出更好的润湿性和更高的水通量。由于每个组件的纤维直径和所产生的应力集中存在显着差异,因此通过增加CS-PVA的量会降低复合材料垫的极限强度。但是,复合膜的热稳定性几乎与纯PSU纤维相同。此外,CS-PVA含量较高的样品表现出更好的润湿性和更高的水通量。由于每个组件的纤维直径和所产生的应力集中存在显着差异,因此通过增加CS-PVA的量会降低复合材料垫的极限强度。但是,复合膜的热稳定性几乎与纯PSU纤维相同。此外,CS-PVA含量较高的样品表现出更好的润湿性和更高的水通量。
更新日期:2020-11-25
中文翻译:
净水中可能适用的电纺聚砜/壳聚糖-聚乙烯醇纤维膜的形态,物理和机械性能
聚砜(PSU)是水净化膜中广泛使用的聚合物。但是,其疏水性阻碍了其实际应用。在此,通过使用亲水性成分壳聚糖-聚乙烯醇(CS-PVA)生产共电纺丝纤维复合膜,可以改善PSU的润湿性。首先,将不同比例的PVA和CS溶液混合并进行电纺丝,以制备CS-PVA共混纤维。扫描电子显微镜(SEM)观察表明,CS:PVA重量比为30:70时,可以获得CS含量最大的CS-PVA混纺纤维。随后将最佳的CS-PVA溶液与PSU溶液一起使用,并注入两个不同的注射器中,然后分别以恒定电压和15 kV和15 cm的距离同时进行电纺。对于每种溶液,使用不同的进料速度可获得不同的PSU / CS-PVA复合成分。基于SEM图像,制备的复合纤维是无珠的。由于每个组件的纤维直径和所产生的应力集中存在显着差异,因此通过增加CS-PVA的量会降低复合材料垫的极限强度。但是,复合膜的热稳定性几乎与纯PSU纤维相同。此外,CS-PVA含量较高的样品表现出更好的润湿性和更高的水通量。由于每个组件的纤维直径和所产生的应力集中存在显着差异,因此通过增加CS-PVA的量会降低复合材料垫的极限强度。但是,复合膜的热稳定性几乎与纯PSU纤维相同。此外,CS-PVA含量较高的样品表现出更好的润湿性和更高的水通量。由于每个组件的纤维直径和所产生的应力集中存在显着差异,因此通过增加CS-PVA的量会降低复合材料垫的极限强度。但是,复合膜的热稳定性几乎与纯PSU纤维相同。此外,CS-PVA含量较高的样品表现出更好的润湿性和更高的水通量。