Thermal diffusivity of polycaprolactone/poly(bisphenol A carbonate) blends by flash radiometry

✍ Scribed by Naoto Tsutsumi; Ken Kano

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 156 KB
• Volume: 37
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(19990415)37:8<745::aid-polb1>3.0.co;2-x

✦ Synopsis

This article presents thermal diffusivity (D) measurement by flash radiometry for the polymer blend of polycaprolactone (PCL) and poly(bisphenol A carbonate) (PC) with a lower critical solution temperature (LCST) phase diagram. The dependence of D on temperature is significantly changed by annealing above the cloud point. D is largely increased by the growth of PCL crystallite in the blends. In the miscible state, D is smaller than that predicted by the rule of mixtures, whereas the dependence of D on the weight fraction of PC for the immiscible (phase-separated) state is well expressed by the rule of mixtures.