In situ Fourier transform infrared spectroscopic study of the conformational changes of high-density poly(ethylene) during the melting and crystallization processes
Yan Xiao
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorLiangyu Yan
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorPuming Zhang
Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China
Search for more papers by this authorNa Zhu
Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China
Search for more papers by this authorLiang Chen
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorPeng He
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorYanping Wang
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
State Key Laboratory for Modification of Chemical Fiber and Materials, Donghua University, Shanghai 200051, People's Republic of China
Search for more papers by this authorXinyuan Shen
State Key Laboratory for Modification of Chemical Fiber and Materials, Donghua University, Shanghai 200051, People's Republic of China
Search for more papers by this authorCorresponding Author
Xinyuan Zhu
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China===Search for more papers by this authorDeyue Yan
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorYan Xiao
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorLiangyu Yan
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorPuming Zhang
Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China
Search for more papers by this authorNa Zhu
Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China
Search for more papers by this authorLiang Chen
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorPeng He
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorYanping Wang
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
State Key Laboratory for Modification of Chemical Fiber and Materials, Donghua University, Shanghai 200051, People's Republic of China
Search for more papers by this authorXinyuan Shen
State Key Laboratory for Modification of Chemical Fiber and Materials, Donghua University, Shanghai 200051, People's Republic of China
Search for more papers by this authorCorresponding Author
Xinyuan Zhu
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China===Search for more papers by this authorDeyue Yan
The State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Search for more papers by this authorAbstract
The conformational analysis of high-density poly(ethylene) (HDPE) during the melting and crystallization processes has been performed by the aid of the time-reserved Fourier transform infrared spectroscopy and multivariate analysis technique. Upon heating, the conformational transition of HDPE takes place, gradually, due to the restraint of crystal lattice, and various conformational transformations can be discerned clearly. However, during the cooling process, HDPE crystallizes very quickly and only one major conformational transition occurs in the crystallization process. The comparison of conformational changes during the melting and crystallization processes exhibits that although the polymer crystallization is the reverse process of polymer melting, there still exist some obvious differences in the conformational transformation between them. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4835–4841, 2006
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