Chiang Mai Journal of Science, Faculty of Science, Chiang Mai University

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Kinetics Studies of Non-Isothermal Melt Crystallization of Poly(ε-caprolactone) and Poly(L-lactide)

Paper Type	Contributed Paper
Title	Kinetics Studies of Non-Isothermal Melt Crystallization of Poly(ε-caprolactone) and Poly(L-lactide)
Author	Wanich Limwanich [a], Sawarot Phetsuk [b], Puttinan Meepowpan [b], Nawee Kungwan [b], Winita Punyodom*[b]
Email	winitacmu@gmail.com
Abstract: The non-isothermal melt crystallization kinetics of the synthesized poly(ε-caprolactone) (PCL) and poly(L-lactide) (PLL) with identical number average molecular weight (= 1.8´10⁴) and polydispersity index (PDI = 1.8) was studied by differential scanning calorimetry (DSC). The crystallizations of PCL and PLL were performed under the cooling rates of 5.0, 7.5, 10.0 and 12.5 °C.min^-1. From non-isothermal DSC analysis, the crystallization rates increased with increasing of the cooling rates, while the crystallization time decreased for both polymers. The Avrami, Ozawa and Liu models were applied to describe non-isothermal crystallization and determine kinetic parameters for PCL and PLL crystallizations. From Avrami, Ozawa and Liu models, the crystallization mechanism of PCL and PLL was nucleation with three dimensional growths. From Avrami, Liu and Friedman analysis, the synthesized PCL crystallized faster than PLL with the identical molecular weight and PDI value.
Start & End Page	329 - 338
Received Date	2015-09-15
Revised Date
Accepted Date	2015-11-01
Full Text	Download
Keyword	crystallization, kinetics, differential scanning calorimetry (DSC), poly(L-lactide), poly(ε-caprolactone), biodegradable polymer
Volume	Vol.43 No.2 (SPECIAL ISSUE 1)
DOI
Citation	[a] W.L., [b] S.P., [b] P.M., [b] N.K. and Punyodom[b] W., Kinetics Studies of Non-Isothermal Melt Crystallization of Poly(ε-caprolactone) and Poly(L-lactide), Chiang Mai Journal of Science, 2016; 43(2)*: 329-338.
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Kinetics Studies of Non-Isothermal Melt Crystallization of Poly(ε-caprolactone) and Poly(L-lactide)

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