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Digital imaging of the oil permeation mechanism in an oleophobic textile.
- Source :
- Textile Research Journal; Aug2022, Vol. 92 Issue 15/16, p2662-2668, 7p
- Publication Year :
- 2022
-
Abstract
- Resistance of military clothing to oil permeation is important for effective protection against chemical warfare. In this paper, while a military textile is rendered oleophobic (oil contact angle ≈ 120°) through plasma-assisted deposition of perfluorodecyl acrylate (PFAC8), permeation of the textile by silicon oil is observed. Using high-definition digital imaging, we study the oil permeation dynamics, rationalize the permeation with a plausible mechanism and identify the threshold textile pore size for prevention of the permeation. We find that oil permeates defects of PFAC8 textiles. Our data suggests a linear variation for oil permeation volume ΔV with time t and implies a gravity-driving permeation mechanism. The mechanism comprises three stages involving merging and propagation of oil–yarn contact lines. The threshold pore size d<subscript>m</subscript> scales with σ/ P, where σ is the oil surface tension and P is the hydrostatic head exerted by the oil drop. The paper indicates the importance of an undamaged textile structure to 'robust' oil resistance. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00405175
- Volume :
- 92
- Issue :
- 15/16
- Database :
- Complementary Index
- Journal :
- Textile Research Journal
- Publication Type :
- Academic Journal
- Accession number :
- 158246122
- Full Text :
- https://doi.org/10.1177/00405175211006944