Inverse gas chromatography for the study of one phase and two phase polymer mixtures

✍ Scribed by Chai Zhikuan; D.J. Walsh

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 430 KB
• Volume: 19
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(83)90203-3

✦ Synopsis

Experiment finds that, for a chlorinated polyethylene (chlorine content 62.1~o by weight)/ poly(ethyl methacrylate) blend, a negative value of Z~3 is obtained, which indicates compatibility. With increasing temperature, X~3 increases towards zero as required by the lower critical solution temperature behaviour of polymer blends. For chlorinated polyethylene/poly(butyl acrylate) blends however the specific retention volume is a linear function of composition and a positive Z~3 results if calculated by the conventional theory. The magnitude of Z~3 is determined by the difference between the retention volumes of the pure polymers and decreases with temperature. This effect is assumed to be a result of phase separation during coating the blend onto the support. A theoretical treatment is developed to explain this behaviour.