Volume 56, Issue 22 pp. 1521-1528
Full Paper

Stretch-Induced Melting and Recrystallization of Polyethylene-Plasticizer Film Studied by In Situ X-Ray Scattering: A Thermodynamic Point of View

Xiaowei Chen

Xiaowei Chen

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Wenwen Zhang

Wenwen Zhang

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Ke Ye

Ke Ye

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Lingpu Meng

Corresponding Author

Lingpu Meng

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

Correspondence to: L. Meng: (E-mail: [email protected])Search for more papers by this author
Fei Lv

Fei Lv

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Tian Cao

Tian Cao

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Caixia Wan

Caixia Wan

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Xin Chen

Xin Chen

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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Liangbin Li

Liangbin Li

National Synchrotron Radiation Laboratory, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, 230026 China

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First published: 08 October 2018
Citations: 9

ABSTRACT

With in situ synchrotron radiation X-ray scattering, the structural alteration of polyethylene-plasticizer film during uniaxial stretching is studied at temperature far below melting point of crystal. By analyzing the evolution rule of structural parameters quantitatively, stretch-induced melting and recrystallization process is validated to be the underlying mechanism of plastic deformation for the system. The physical essence of stretch-induced melting is proved to be phase transition driven by elastic energy which originates from lattice deformation. Conversely, the recrystallization process is proved to be controlled by temperature; furthermore, the growth of lamellae during recrystallization is in perfect accordance with kinetic theory by Lauritzen and Hoffman. This study provides a quantitative understanding to the long-existing melting–recrystallization model from a thermodynamics point of view. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 1521–1528

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