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Interrogation of a fluoropolymer dispersion manufactured with a non-fluorinated polymerization aid for targeted and non-targeted fluorinated residuals by liquid chromatography high resolution mass spectrometry
被引:3
作者:
Sworen, John C.
[1
]
Morken, Peter A.
[1
]
Smith, Adam P.
[2
]
Boyle, Jill E.
[1
]
Garcia, Maria D. Cervantes
[1
]
Kramer, Jordyn
[1
]
Wadsley, Michael P.
[1
]
Davis, Michael C.
[1
]
机构:
[1] Chemours Co, 201 Discovery Blvd, Newark, DE 19713 USA
[2] Chemours Co, 8480 DuPont Rd, Washington, WV USA
关键词:
Fluoropolymer;
NFS (non-fluorinated surfactant) PA (polymerization aid);
Non-targeted;
Residuals;
Polytetrafluoroethylene;
PERFLUOROALKYL SUBSTANCES;
POLYFLUOROALKYL;
IDENTIFICATION;
ACID;
D O I:
10.1016/j.chroma.2024.465369
中图分类号:
Q5 [生物化学];
学科分类号:
071010 ;
081704 ;
摘要:
Recent advances in fluoropolymer polymerization have focused on replacing perfluorinated polymerization aids (PAs) with hydrocarbon-based alternatives. Hydrocarbon PAs are vulnerable to fluorinated radicals during polymerization, leading to the creation of hundreds of process-specific polyfluorinated residuals. These residuals, which include low molecular weight extractable or leachable impurities, are challenging to detect at trace levels. This study investigates a polytetrafluoroethylene (PTFE) dispersion prepared with a hydrocarbon-based surfactant (DOSS) to measure these process-specific fluorinated residues. Liquid chromatography high resolution mass spectrometry is one of the few analytical methods that offers the sensitivity and selectivity required to detect these residuals in complex matrices at concentrations as low as parts per billion. The results indicate that using a hydrocarbon PA during emulsion polymerization produces numerous polyfluorinated residuals. These must be identified and monitored to develop effective abatement strategies, ensuring responsible fluoropolymer manufacturing.
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页数:7
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