Evaluation of Solvent Resistivity of Fluoropolymers for Use as Backup Membranes in Isocyanate Samplers

Details

• Personal Author:
  Aminabhavi TM ; Harlapur SF ; Rudzinski W
• Description:
  Four types of fluoroelastomer (VITON) membranes were tested for their resistivity toward dimethyl sulfoxide, dioxane, and toluene at 25, 45, and 60 degrees C, using a gravimetric method. Coefficients of diffusion and permeation were calculated from the sorption results. Analytical solutions of Fick's equation as well as a numerical method were used to calculate the concentration profiles of liquids in the membrane materials at different penetration depths and exposure times. Activation parameters for diffusion, permeation, and sorption were obtained from the Arrhenius equation. These membrane materials were evaluated for their ability to serve as a barrier to solvent permeation in a composite membrane sampler for the analytical determination of isocyanates generated during spray-painting operations. [Description provided by NIOSH]
• Subjects:
  Isocyanates Manufacturing And Industrial Facilities Occupational Exposure Occupational Health Paint Safety Solvents Toluene
• Keywords:
  Analytical-methods Materials-testing Occupational-exposure Paint-spraying Painting Sampling Sampling-methods Spray-painting Toluenes
• ISSN:
  0021-8995
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 6 ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  62
• Issue:
  10
• NIOSHTIC Number:
  nn:20024572
• Citation:
  J Appl Polym Sci 1996 Dec; 62(10):1587-1595
• CAS Registry Number:
  1,4-Dioxane (CAS RN 123-91-1) ; Dimethyl sulfoxide (CAS RN 67-68-5) ; Toluene (CAS RN 108-88-3)
• Federal Fiscal Year:
  1997
• Performing Organization:
  Texas State University - San Marcos
• Peer Reviewed:
  True
• Start Date:
  19950501
• Source Full Name:
  Journal of Applied Polymer Science
• End Date:
  19970430
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:976176eacc69963c577b51a9af680a4a2b1e74579b06b9f9b5b9bbff368c795563bfd6dad8763a02d5922794f1cae208df82ecc798973f17e4b6e2e72b824f77
• Download URL:
  https://stacks.cdc.gov/view/cdc/196319/cdc_196319_DS1.pdf
• File Type:
  [PDF - 571.50 KB ]