✦ LIBER ✦

Blends of polycarbonate and poly(ϵ-caprolactone) and the determination of the polymer–polymer interaction parameter of the two polymers

✍ Scribed by Yong Sung Chun; Junghoon Park; Jong Baek Sun; Woo Nyon Kim

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 99 KB
Volume: 38
Category: Article
ISSN: 0887-6266
DOI: 10.1002/1099-0488(20000801)38:15<2072::aid-polb120>3.0.co;2-4

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✦ Synopsis

The thermal properties of blends of polycarbonate (PC) and poly(-caprolactone) (PCL) were investigated by differential scanning calorimetry (DSC). From the thermal analysis of PC-PCL blends, a single glass-transition temperature (T g ) was observed for all the blend compositions. These results indicate that there is miscibility between the two components. From the modified Lu and Weiss equation, the polymerpolymer interaction parameter ( 12 ) of the PC-PCL blends was calculated and found to range from Ϫ0.012 to Ϫ0.040 with the compositions. The 12 values calculated from the T g method decreased with the increase of PC weight fraction. By taking PC-PCL blend as a model system, the values of 12 were compared with two different methods, the T g method and melting point depression method. The two methods are in reasonably good agreement for the 12 values of the PC-PCL blends.

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