Green electrospun and crosslinked poly(vinyl alcohol)/poly(acrylic acid) composite membranes for antibacterial effective air filtration
Green electrospun and crosslinked poly(vinyl alcohol)/poly(acrylic acid) composite membranes for antibacterial effective air filtration
复制标题
DOI：
10.1016/j.jcis.2017.09.101
复制
发表时间：
2018-02-01
影响因子：
9.9
通讯作者：
Huang, Chaobo
中科院分区：
文献类型：
--
作者：
Zhu, Miaomiao;Hua, Dawei;Huang, Chaobo
由于颗粒物（PM）水平不断增加以及耐药细菌和病毒株的增加，空气污染已成为一个主要的环境问题。因此，需要大力开发空气过滤和净化技术以及新型替代抗病毒和抗菌治疗方式。在这里，我们报告了一种环境友好的方法，通过绿色静电纺丝和热交联的多功能聚乙烯醇/聚丙烯酸（PVA-PAA）复合膜的生成。然后将超疏水二氧化硅纳米颗粒掺入纤维中，从而产生粗糙的表面，之后引入AgNO 3，从而通过UV还原形成Ag纳米颗粒。发现PVA-PAA-SiO2-Ag NPs膜具有高的空气过滤性能（对PM2.5的过滤效率> 98%）以及有效的抗菌和抗病毒活性。该绿色合成方法避免了使用有害的有机溶剂，从而绕过了由有机溶剂残留物引起的任何潜在毒性问题。这些新设计的PVA-PAA-SiO2 NPs-Ag NPs纳米纤维膜具有许多上级特征（例如，高过滤效率、高拉伸强度、生物相容性和抗菌特性），可以应用于生态友好的空气过滤材料，特别是用于个人空气过滤装置。(C)2017爱思唯尔公司All rights reserved.
Air pollution has become a major environmental concern given the ever increasing levels of particulate matter (PM) and the increased in treatment-resistant bacterial and viral strains. Major efforts are therefore required into the development of air filtration and purification technology as well as novel, alternative antiviral and antibacterial treatment modalities. Here, we report an environmentally friendly method for the generation of multifunctional poly(vinyl alcohol)/poly(acrylic acid) (PVA-PAA) composite membranes via green electrospinning and thermal crosslinking. Superhydrophobic silica nanoparticles were then incorporated into the fibers resulting in a rough surface, after which AgNO3 was introduced, resulting in the formation of Ag nanoparticles through UV reduction. The PVA-PAA-SiO2-Ag NPs membranes were found to possess high air filtration performance (with > 98% filtration efficiency for PM2.5) as well as potent antibacterial and antiviral activities. The green synthesis approach avoids the use of hazardous organic solvents, thereby bypassing any potential toxicity concerns caused by organic solvent residues. These newly designed PVA-PAA-SiO2 NPs-Ag NPs nanofibrous membranes with many superior features (e.g. high filtration efficiency, high tensile strength, biological compatibility, and antibacterial properties) can be applied in eco-friendly air filtration materials, in particular for personal air filtration devices. (C) 2017 Elsevier Inc. All rights reserved.