State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Shou-Ke Yan, E-mail skyan@mail.buct.edu.cn
收稿:2017-08-09,
录用:2017-9-8,
网络首发:2018-01-18,
纸质出版:2018-05
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Yi-Ran Zheng, Jie Zhang, Xiao-Li Sun, 等. Enhanced
Yi-Ran Zheng, Jie Zhang, Xiao-Li Sun, et al. Enhanced
Yi-Ran Zheng, Jie Zhang, Xiao-Li Sun, 等. Enhanced
Yi-Ran Zheng, Jie Zhang, Xiao-Li Sun, et al. Enhanced
Poly(vinylidene fluoride) (PVDF) exhibits pronounced polymorphs. Its
γ
phase is attractive due to the electroactive properties. The
γ
-PVDF is however difficult to obtain under normal crystallization condition. In a previous work
we reported a simple melt-recrystallization approach for producing
γ
-phase rich PVDF thin films through selective melting and subsequent recrystallization. We reported here another approach for promoting the
αγ
' phase transition to prepare
γ
-phase rich PVDF thin films. To this end
a stepwise crystallization and subsequent annealing process was used. The idea is based on a quick generation of a large amount of
α
-PVDF crystals with some of their
γ
-PVDF counterparts at suitable crystallization temperature and then annealing at a temperature above the crystallization temperature for enhancing the molecular chain mobility to overcome the energy barrier of phase transition. It was found that crystallizing the PVDF melt first at 152℃ for 4 h
then quenching to room temperature and finally annealing the sample at 160℃ for 100 h was the most efficient to produce
γ
-PVDF rich films. This is related to the melting and recrystallization of the
α
-PVDF crystals produced during quenching in the annealing process at 160℃
which favors the formation of
γ
-PVDF crystals for triggering the
αγ
' phase transition.
Q. D. Ling , D. J. Liaw , C. Zhu , D. S. H. Chan , E. T. Kang , K. G. Neoh . Polymer electronic memories:materials, devices and mechanisms . Prog. Polym. Sci. , 2008 . 33 ( 10 ): 917 - 978 . DOI: 10.1016/j.progpolymsci.2008.08.001 http://doi.org/10.1016/j.progpolymsci.2008.08.001 .
W. W. Doll , J. B. Lando . The polymorphism of poly(vinylidene fluoride) Ⅳ. The structure of high-pressure-crystallized poly(vinylidene fluoride) . J. Macromol. Sci. B , 1970 . 4 ( 4 ): 889 - 896 . DOI: 10.1080/00222347008217130 http://doi.org/10.1080/00222347008217130 .
Lovinger, A. J., in "Developments in Crystalline Polymers, Vol. 1", ed. by Bassett, D. C. Springer, Netherlands, 1982, p. 195
A. J. Lovinger . Ferroelectric polymers . Science , 1983 . 220 ( 4602 ): 1115 - 1121 . DOI: 10.1126/science.220.4602.1115 http://doi.org/10.1126/science.220.4602.1115 .
Z. Chen , K. Y. Kwon , X. Tan . Integrated IPMC/PVDF sensory actuator and its validation in feedback control . Sensor Actuat. A-Phys. , 2008 . 144 ( 2 ): 231 - 241 . DOI: 10.1016/j.sna.2008.01.023 http://doi.org/10.1016/j.sna.2008.01.023 .
B. Chu , X. Zhou , K. Ren , B. Neese , M. Lin , Q. Wang , F. Bauer , Q. M. Zhang . A dielectric polymer with high electric energy density and fast discharge speed . Science , 2006 . 313 ( 5785 ): 334 - 336 . DOI: 10.1126/science.1127798 http://doi.org/10.1126/science.1127798 .
A. J. Lovinger . Annealing of poly(vinylidene fluoride) and formation of a fifth phase . Macromolecules , 1982 . 15 ( 1 ): 40 - 44 . DOI: 10.1021/ma00229a008 http://doi.org/10.1021/ma00229a008 .
M. Li , H. J. Wondergem , M. J. Spijkamn , K. Asadi , I. Katsouras , P. W. M. Blom . Revisiting the δ-phase of poly(vinylidene fluoride) for solution-processed ferroelectric thin films . Nat. Mater. , 2013 . 12 ( 5 ): 433 - 438 . DOI: 10.1038/nmat3577 http://doi.org/10.1038/nmat3577 .
S. J. Kang , Y. J. Park , I. Bae , K. J. Kim , H. C. Kim , S. Bauer , E. L. Thomas , C. Park . Printable ferroelectric PVDF/PMMA blend films with ultralow roughness for low voltage non-volatile polymer memory . Adv. Funct. Mater. , 2009 . 19 ( 17 ): 2812 - 2818 . DOI: 10.1002/adfm.v19:17 http://doi.org/10.1002/adfm.v19:17 .
S. J. Kang , Y. J. Park , J. Y. Hwang , H. J. Jeong , J. S. Lee , K. J. Kim , H. C. Kim , J. Huh , C. Park . Localized pressure-induced ferroelectric pattern arrays of semicrystalline poly(vinylidene fluoride) by microimprinting . Adv. Mater. , 2007 . 19 ( 4 ): 581 - 586 . DOI: 10.1002/(ISSN)1521-4095 http://doi.org/10.1002/(ISSN)1521-4095 .
S. J. Kang , I. Bae , J. H. Choi , Y. J. Park , P. S. Jo , Y. Kim , K. J. Kim , J. M. Myoung , E. Kim , C. Park . Fabrication of micropatterned ferroelectric gamma poly(vinylidene fluoride) film for non-volatile polymer memory . J. Mater. Chem. , 2011 . 21 ( 11 ): 3619 - 3624 . DOI: 10.1039/c0jm02732d http://doi.org/10.1039/c0jm02732d .
A. J. Lovinger . Crystalline transformations in spherulites of poly(vinylidene fluoride) . Polymer , 1980 . 21 ( 11 ): 1317 - 1322 . DOI: 10.1016/0032-3861(80)90200-1 http://doi.org/10.1016/0032-3861(80)90200-1 .
A. J. Lovinger . Crystallization and morphology of melt-solidified poly(vinylidene fluoride) . J. Polym. Sci. Polym. Phys. Ed. , 1980 . 18 ( 4 ): 793 - 809 . DOI: 10.1002/pol.1980.180180412 http://doi.org/10.1002/pol.1980.180180412 .
K. Tashiro , M. Kobayahsi . Structural phase transition in ferroelectric fluorine polymers:X-ray diffraction and infrared/Raman spectroscopic study . Phase Transit. , 1989 . 18 ( 3-4 ): 213 - 246 . DOI: 10.1080/01411598908206864 http://doi.org/10.1080/01411598908206864 .
R. Gregorio , R. C. CapitãO . Morphology and phase transition of high melt temperature crystallized poly(vinylidene fluoride) . J. Mater. Sci. , 2000 . 35 ( 2 ): 299 - 306 . DOI: 10.1023/A:1004737000016 http://doi.org/10.1023/A:1004737000016 .
A. J. Lovinger . Conformational defects and associated molecular motions in crystalline poly(vinylidene fluoride) . J. Appl. Phys. , 1981 . 52 ( 10 ): 5934 - 5938 . DOI: 10.1063/1.328522 http://doi.org/10.1063/1.328522 .
Y. Takahashi , Y. Matsubara , H. Tadokoro . Mechanisms for crystal phase transformations by heat treatment and molecular motion in poly(vinylidene fluoride) . Macromolecules , 1982 . 15 ( 2 ): 334 - 338 . DOI: 10.1021/ma00230a026 http://doi.org/10.1021/ma00230a026 .
Y. Zheng , J. Zhang , X. Sun , H. Li , Z. Ren , S. Yan . Crystal structure regulation of ferroelectric poly(vinylidene fluoride) via controlled melt-recrystallization . Ind. Eng. Chem. Res. , 2017 . 56 ( 15 ): 4580 - 4587 . DOI: 10.1021/acs.iecr.7b00543 http://doi.org/10.1021/acs.iecr.7b00543 .
C. Meraga , A. Marigo . Influence of annealing and chain defects on the melting behavior of poly(vinylidene fluoride) . Eur. Polym. J. , 2003 . 39 ( 8 ): 1713 - 1720 . DOI: 10.1016/S0014-3057(03)00062-4 http://doi.org/10.1016/S0014-3057(03)00062-4 .
P. Martins , A. C. Lopes , S. Lanceros-Mendez . Electroactive phases of poly(vinylidene fluoride):determination, processing and applications . Prog. Polym. Sci. , 2014 . 39 ( 4 ): 683 - 706 . DOI: 10.1016/j.progpolymsci.2013.07.006 http://doi.org/10.1016/j.progpolymsci.2013.07.006 .
K. Tashiro , M. Kobayashi , H. Tadokoro . Vibrational spectra and disorder-order transition of poly(vinylidene fluoride) form Ⅲ . Macromolecules , 1981 . 14 ( 6 ): 1757 - 1764 . DOI: 10.1021/ma50007a028 http://doi.org/10.1021/ma50007a028 .
Y. T. Wang , P. R. Liu , Y. Lu , Y. F. Men . Mechanism of polymorph selection during crystallization of random butene-1/ethylene copolymer . Chinese J. Polym. Sci. , 2016 . 34 ( 8 ): 1014 - 1020 . DOI: 10.1007/s10118-016-1802-8 http://doi.org/10.1007/s10118-016-1802-8 .
D. D. Hu , S. B. Ye , F. Yu , J. C. Feng . Further understanding on the three domains of isotactic polypropylene by investigating the crystalline morphologies evolution after treatment at different domains . Chinese J. Polym. Sci. , 2016 . 34 ( 3 ): 344 - 358 . DOI: 10.1007/s10118-016-1745-0 http://doi.org/10.1007/s10118-016-1745-0 .
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