Use of inverse gas chromatography to measure diffusion coefficients in crosslinked polymers at different temperatures

✍ Scribed by Paul L Jackson; Malcolm B Huglin

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 303 KB
• Volume: 31
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(94)00124-3

✦ Synopsis

Inverse gas chromatography has been used to measure diffusion coefficients in an amine cured epoxy resin (AM-ER) and in an anhydride cured epoxy resin (AN-ER) as stationary phase. Of several common liquids examined detectable diffusion data in both resins over a range of temperature was afforded onl:y by chlorobenzene as penetrant. Within the range 433493 K, an activation energy for diffusion of 164 f 6 kJ mol-i was derived for this penetrant in AM-ER and about twice this value for chlorobenzene in AN-ER. It is proposed that the difference is attributable, in part, to the different affinity of chlorobenzene for each resin, as indicated by relevant values of the cohesive energy densities.