Effect of wet processing and chemical finishing on fabric hand

Tomasino, Charles

doi:10.1533/9781845690984.3.289

Cited by 1 publication

(1 citation statement)

References 21 publications

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“…Surfactants (also known as fiber finishes) are typically applied to fibers to dissipate any static electricity generated during processing. , Excessive static can create conditions in which fibers adhere to equipment. Surfactants act as lubricants, surface conditioners, or softeners . Lubrication is very important in needle-punching and weaving operations .…”

Section: Discussionmentioning

confidence: 99%

Are Geotextiles Silent Contributors of Ultrashort Chain PFASs to the Environment?

Mikhael,

Bouazza,

Gates

et al. 2024

Environ. Sci. Technol.

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We investigated the presence of per- and poly fluoroalkyl substances (PFASs) in woven and nonwoven polypropylene geotextiles and four nonwoven polyester geotextiles commonly used in modern geosynthetic composite lining systems for waste containment facilities such as landfills. Targeted analysis for 23 environmentally significant PFAS molecules and methods for examining “PFAS total” concentrations were utilized to assess their occurrence in geotextiles. This analysis showed that most geotextile specimens evaluated in the current investigation contained the ultrashort chain PFAS compound pentafluoropropionic acid (PFPrA). While the concentrations ranged from nondetectable to 10.84 μg/g, the average measured concentrations of PFPrA were higher in polypropylene than in polyester geotextiles. “PFAS total” parameters comprising total fluorine (TF) and total oxidizable precursors (TOPs) indicate that no significant precursor mass nor untargeted intermediates were present in geotextiles. Therefore, this study identified geotextiles as a possible source of ultrashort PFASs in engineered lined waste containment facilities, which may contribute to the overall PFAS total concentrations in leachates or liquors they are in contact with. The findings reported for the first time herein may lead to further implications on the fate and migration of PFASs in geosynthetic composite liners, as previously unidentified concentrations, particularly of ultrashort-chain PFASs, may impact the extent of PFAS migration through and attenuation by constituents of geosynthetic composite liner systems. Given the widespread use of geotextiles in various engineering activities, these findings may have other unknown impacts. The significance of these findings needs to be further elucidated by more extensive studies with larger geotextile sample sizes to allow broader, generalized conclusions to be drawn.

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Section: Discussionmentioning

confidence: 99%