Nonisothermal crystallization behavior of a luminescent conjugated polymer,poly(9,9‐dihexylfluorene‐alt‐2,5‐didodecyloxybenzene) |
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| Authors: | Gui‐Zhong Yang Xiaolei Chen Yan Xu Chun‐Zhong Li Peiyi Wu Tianxi Liu |
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| Affiliation: | 1. Key Laboratory of Molecular Engineering of Polymers of Chinese Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China;2. Key Laboratory for Ultrafine Materials of Chinese Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China;3. Key Laboratory of Molecular Engineering of Polymers of Chinese Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR ChinaKey Laboratory of Molecular Engineering of Polymers of Chinese Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, PR China |
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| Abstract: | 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 |
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| Keywords: | polyfluorene crystallization kinetics nonisothermal |
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