PDF(Pubmed)
Abstract：
The exposure of workers to propylene glycol monomethyl ether acetate (PGMEA) in manufacturing environments can result in potential health risks. Therefore, systems for PGMEA removal are required for indoor air quality control. In this study, core-shell zeolite socony mobil-5 (ZSM-5)/polyvinylpyrrolidone-polyvinylidene fluoride nanofibers were directly electrospun and partially wet-etched on a mesh substrate to develop a cover-free compact PGMEA air filter. The electrospinning behaviors of the core-shell nanofibers were investigated to optimize the electrospinning time and humidity and to enable the manufacture of thin and light air-filter layers. The partial wet etching of the nanofibers was undertaken using different etching solvents and times to ensure the exposure of the active sites of ZSM-5. The performances of the ZSM-5/PVDF nanofiber air filters were assessed by measuring five consecutive PGMEA adsorption-desorption cycles at different desorption temperatures. The synthesized material remained stable upon repeated adsorption-desorption cycles and could be regenerated at a low desorption temperature (80 °C), demonstrating a consistent adsorption performance upon prolonged adsorption-desorption cycling and low energy consumption during regeneration. The results of this study provide new insights into the design of industrial air filters using functional ceramic/polymer nanofibers and the application of these filters.
摘要：
在制造环境中，工人接触丙二醇单甲醚乙酸酯（PGMEA）可能会导致潜在的健康风险。因此,室内空气质量控制需要PGMEA去除系统。在这项研究中,将核壳沸石soconymobil-5（ZSM-5）/聚乙烯吡咯烷酮-聚偏氟乙烯纳米纤维直接电纺并在网状基材上部分湿法蚀刻，以开发无盖紧凑型PGMEA空气过滤器。研究了核壳纳米纤维的静电纺丝行为，以优化静电纺丝时间和湿度，并能够制造薄而轻的空气过滤层。使用不同的蚀刻溶剂和时间进行纳米纤维的部分湿法蚀刻以确保ZSM-5的活性位点的暴露。通过在不同解吸温度下测量五个连续的PGMEA吸附-解吸循环来评估ZSM-5/PVDF纳米纤维空气过滤器的性能。合成的材料在反复的吸附-解吸循环中保持稳定，并且可以在低解吸温度（80°C）下再生，在延长的吸附-解吸循环和再生过程中低能耗时，表现出一致的吸附性能。这项研究的结果为使用功能性陶瓷/聚合物纳米纤维的工业空气过滤器的设计以及这些过滤器的应用提供了新的见解。
