V.35,no.4,Dec 2023 https://doi.org/10.5764/TCF. Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2022 / V.34,no.1,Mar Title Preparation of Poly(vinyl alcohol)/polypropylene Nano-filter by High Speed Centrifugal Solution Spinning Authors Seong Baek Yang, Jungeon Lee, Jae Min Park, Jae Hoon Jung1, Tae Young Kim, Ki Young Kim2, Sang Jun Lee2, and Jeong Hyun Yeum Institution/Affiliations Kyungpook National University, IJS Co., Ltd Pages/Total page pp.20 ~ 26 / 7 Language Korean Abstract Centrifugal spinning is an emerging technique for fabricating micro-to-nanofibers in recent years. To obtain fibers with the desired size and morphology, it is necessary to configure and optimize the parameters used in centrifugal spinning. In this study, it was controlled by changing the solution’s concentration (7.5, 10, and 12.5 wt.%) and disk’s rotational velocity (6,000, 8,000, and 10,000 rpm) to prepare centrifugal spun nano-filter. The morphological property, air permeability, and dust collection efficiency of the PVA/PP bi-layer nanoweb prepared by centrifugal spun PVA on the PP micron nonwoven substrate are studied using a field emission scanning electron microscope, an air permeability tester, and a filter tester equipment, and the analysis results indicate that it is suitable as a nano-filter when the concentration of PVA solution is 10 wt.% and the rotational velocity of the disk is 8,000 rpm. The resultant reduced diameter and uniform fibers also proved that an excellent dust collection efficiency filter could be made. Keywords high speed centrifugal solution spinning, poly(vinyl alcohol), multi-layered filter, dust collection efficiency, nanofiber Download   Reference http://koreascience.or.kr/journal/OSGGBT.page?&lang=ko