DEGRADATION PROCESSES IN OUTDOOR EXPOSURE

SUNLIGHT IS A POWERFUL SOURCE OF DETERIORATION FOR POLYMERS, MOST POLYMERS HAVING GROUPS OR IMPURITIES WHICH ABSORB VARIOUS WAVELENGTHS. CHAIN SCISSION AND CROSS-LINKING ARE TWO IMPORTANT PROCESSES TAKING PLACE DURING PHOTOLYSIS, HAVING A PROFOUND EFFECT ON THE MECHANICAL PROPERTIES OF THE POLYMERS. THE FUNDAMENTAL REACTIONS THAT CAN TAKE PLACE WHEN POLYMERS ARE EXPOSED, SEPARATELY, TO LIGHT, OXYGEN, OZONE, AND OTHER CHEMICALS ARE SURVEYED. THE KINETICS OF THE PHOTOLYTIC AND OXIDATIVE DEGRADATION REACTIONS ARE PRESENTED IN DETAIL.

• Supplemental Notes:
  • Vol 44, No 8, P 162
• Authors:
  • Jellinek, HHG
• Publication Date: 1967-4

Media Info

• Serial:
  • Modern Plastics
  • Publisher: McGraw-Hill, Incorporated

Subject/Index Terms

• TRT Terms: Kinetics; Light; Mechanical properties; Oxidation; Oxygen; Ozone; Polymers; Splitting (Communications); Surveys; Weathering
• Uncontrolled Terms: Degradation
• Old TRIS Terms: Crosslinking /molecular/; Splitting
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216191
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 27 1994 12:00AM