Preparation and Evaluation of Polyurethane Foam/Rubber Membrane-Based Samplers for Use in Isocyanate Sampling

Details

• Personal Author:
  Aminabhavi TM ; Anderson T ; George SC ; Norman S ; Rudzinski WE ; Thomas S ; Unnikrishnan G ; Varkey JT ; Yin J
• Description:
  In order to collect isocyanate in both aerosol and vapor forms, we have developed a dual-membrane sampler which features a moist porous bed, backed up by an impermeable membrane. A polyester-polyurethane foam (PUF) was selected to function as the porous bed, and it was evaluated for its ability to resist solvent degradation and swelling while permitting rapid air penetration. Natural rubber (NR) and styrene-butadience rubber (SBR) membranes were prepared to serve as backup membranes. These were also evaluated for their solvent compatibitility and air-penetration characteristics. A polyester-polyurethane foam backed up by a NR membrane prepared by an efficient vulcanization procedure was selected as the best combination for development of the isocyanate sampler. Recovery studies using the hexamethylene-based polyisocyanate, biuret, indicated better than 80% recovery of polyisocyanate after application to the PUF. [Description provided by NIOSH]
• Subjects:
  Aerosols Environmental Monitoring Isocyanates Occupational Exposure Occupational Health Polyurethanes Safety Solvents Styrene
• Keywords:
  Air-sampling Analytical-methods Occupational-exposure Polyurethane-foams Sampling Sampling-equipment Sampling-methods Styrenes Vapors
• ISSN:
  0360-2559
• 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
• Pages in Document:
  103-113
• Volume:
  37
• Issue:
  1
• NIOSHTIC Number:
  nn:20024574
• Citation:
  Polym-plast Technol Eng 1998 Jan; 37(1):103-113
• CAS Registry Number:
  Biuret (CAS RN 108-19-0) ; Hexamethylene diisocyanate (CAS RN 822-06-0) ; Styrene (CAS RN 100-42-5)
• Federal Fiscal Year:
  1998
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Performing Organization:
  Texas State University - San Marcos
• Peer Reviewed:
  True
• Start Date:
  19950501
• Source Full Name:
  Polymer-Plastics Technology and Engineering
• End Date:
  19970430
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:416f349e35313f6e81ad3dac5cb53f773465deec8a075e87b3210c0a266bcc666fc295acd8e0376b71faa5f6febc943fb031515aba4e662588cecd20a6810df1
• Download URL:
  https://stacks.cdc.gov/view/cdc/196320/cdc_196320_DS1.pdf
• File Type:
  [PDF - 1.70 MB ]