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

• Published in: Polymer international Vol. 56; no. 2; pp. 245 - 251
• Main Authors: Yang, Gui-Zhong, Chen, Xiaolei, Xu, Yan, Li, Chun-Zhong, Wu, Peiyi, Liu, Tianxi
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.02.2007; Wiley
• Subjects: Applied sciences; Crystallization; Exact sciences and technology; kinetics; nonisothermal; Organic polymers; Physicochemistry of polymers; polyfluorene; Properties and characterization; Phenylene derivative copolymer; Luminescent material; Crystallinity; Experimental study; Modeling; Kinetic model; polyfluorene; Melt crystallization; Conjugated copolymer; Aromatic copolymer; crystallization; nonisothermal; Alternating copolymer; Kinetics; Activation energy; Fluorene derivative copolymer
• ISSN: 0959-8103; 1097-0126
• DOI: 10.1002/pi.2147

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