Nonisothermal crystallization behavior of a luminescent conjugated polymer, poly(9,9-dihexylfluorene-alt-2,5-didodecyloxybenzene)

The nonisothermal crystallization kinetics of poly(9,9‐dihexylfluorene‐alt‐2,5‐didodecyloxybenzene) (PF6OC12) from the melt were investigated using differential scanning calorimetry under different cooling rates. Several analysis methods were used to describe the nonisothermal crystallization behavi...

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Bibliographic Details
Published in:Polymer international 2007-02, Vol.56 (2), p.245-251
Main Authors: Yang, Gui-Zhong, Chen, Xiaolei, Xu, Yan, Li, Chun-Zhong, Wu, Peiyi, Liu, Tianxi
Format: Article
Language:English
Subjects:
Applied sciences
Crystallization
Exact sciences and technology
kinetics
nonisothermal
Organic polymers
Physicochemistry of polymers
polyfluorene
Properties and characterization
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Summary:The nonisothermal crystallization kinetics of poly(9,9‐dihexylfluorene‐alt‐2,5‐didodecyloxybenzene) (PF6OC12) from the melt were investigated using differential scanning calorimetry under different cooling rates. Several analysis methods were used to describe the nonisothermal crystallization behavior of PF6OC12. It was found that the modified Avrami method by Jeziorny was only valid for describing the early stage of crystallization but was not able to describe the later stage of PF6OC12 crystallization. Also, the Ozawa method failed to describe the nonisothermal crystallization behavior of PF6OC12. However, the method developed by combining the Avrami and Ozawa equations could successfully describe the nonisothermal crystallization kinetics of PF6OC12. According to the Kissinger method, the activation energy was determined to be 114.9 kJ mol−1 for the nonisothermal melt crystallization of PF6OC12. Copyright © 2006 Society of Chemical Industry
ISSN:0959-8103
1097-0126
DOI:10.1002/pi.2147