Behaviour of fused silica capillaries subjected to gamma radiation. Part 2: Physical aspects

✍ Scribed by Barry, E. F. ;Chabot, G. E. ;Ferioli, P. ;Hubball, J. A. ;Rand, E. M.

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 716 KB
• Volume: 6
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240060603

✦ Synopsis

Five commercial varieties of uncoated fused silica capillary tubing used in high resolution gas chromatography were subjected to cobalt-60 gamma radiation. The advantages and superior performance of fused silica open tubular columns coated with OV-1 and subsequently immobilized or crosslinked in situ by radiation is reported in a previous paper in this Journal; however, in this investigation a loss in flexibility of irradiated capillaries was also noted. Quantitative measurements on flexibility were performed on specimens of irradiated fused silica capillaries, indicating that changes do indeed occur upon irradiation. Scanning electron micrographs also illustrate slight deterioration of the outer protective polyimide coating. Most surprisingly, it was alsoestablished thatavariationdoesexistintheflexibilityofthe commercially available raw material studied.