[섬유] Use of Electrospun Nanofiber Web for Protective Textile Materials as Barriers to Liquid Penetration 출판일 : 2007.09.01 저자 : Seungsin Lee, S. Kay Obendorf 서지사항 : Textile Research Journal, Volume 77, Issue 9, 696페이지 등록일 : 2011.10.31 I 조회수 : 75 작성자 : admin |
To examine the potential of electrospun nanofibrous webs as barriers to liquid penetration in
protective clothing systems for agricultural workers, layered fabric systems with electrospun
polyurethane fiber web layered on spunbonded nonwoven were developed. Barrier
performance was evaluated for the layered fabric systems with different levels of
electrospun web area density, using three pesticide mixtures that represent a range of
surface tension and viscosity. Effects of electrospun web density on air permeability and
water vapor transmission were assessed as indications of thermal comfort performance.
Pore size distribution was measured to examine the effect of electrospun fiber web layers
on pore size. Penetration testing showed that a very thin layer of electrospun polyurethane
web significantly improved barrier performance for challenge liquids with a range of
physicochemical properties. Air permeability decreased with increasing electrospun web
area density, but was still higher than most of protective clothing materials currently
available. No significant change was observed in moisture vapor transport of the system
from electrospun nanofibrous web layers. Pore size distribution measurements indicated the
feasibility of engineering pore size via the level of electrospun web area density, hence,
controlling the level of protection and thermal comfort of layered fabric systems depending
on their need.
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