Ionic Liquid Assisted α-γ′ Phase Transition of Poly(vinylidene fluoride) Thin Films

被引：23

作者：

Liu, Zixiong ^{[1
]}

Wang, Haijun ^{[1
]}

Liu, Kun ^{[1
]}

Li, Huihui ^{[2
]}

Sun, Xiaoli ^{[2
]}

Hu, Jian ^{[3
]}

Wang, Shaojuan ^{[3
]}

Yuan, Chunlei ^{[1
]}

Yan, Shouke ^{[2
,3
]}

机构：

[1] Shaanxi Univ Sci & Technol, Xian 710021, Shaanxi, Peoples R China

[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[3] Qingdao Univ Sci & Technol, Key Lab Rubber Plast, Minist Educ, Shandong Prov Key Lab Rubber Plast, Qingdao 266042, Peoples R China

来源：

MACROMOLECULES | 2022年 / 55卷 / 06期

关键词：

CRYSTALLIZATION; DIPOLE; BETA; TRANSFORMATIONS; TOUGHNESS; PRESSURE; BEHAVIOR; FORMS;

D O I：

10.1021/acs.macromol.1c02653

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this work, a simple and efficient approach has been developed for preparing gamma-PVDF films with a wide range of thickness based on the spontaneous diffusion of ionic liquids (ILs) into the alpha-PVDF matrix. It involves three steps: (i) preparation of alpha-PVDF films, (ii) surface coating of the resultant alpha-PVDF films with ionic liquids or quaternary ammonium solution, and (iii) annealing the surface modified PVDF thin film at a high temperature. In this way, the original alpha-PVDF film is then transferred into a gamma-rich one through the well-known alpha-gamma' phase transition. The alpha-gamma' transition is found to be much faster and more efficient for high-temperature prepared samples. It has been further confirmed that the alpha-gamma' phase transition includes the induction and slow phase transition stages for low-temperature fabricated samples as well as the rapid and then slow transition stages for the samples prepared at 120 and 150 degrees C.

引用

页码：2160 / 2170

页数：11

共 45 条

[41] Structure changes during the induction period of cold crystallization of isotactic polystyrene investigated by infrared and two-dimensional infrared correlation spectroscopy [J].

Zhang, JM ;

Duan, YX ;

Shen, DY ;

Yan, SK ;

Noda, I ;

Ozaki, Y .

MACROMOLECULES, 2004, 37 (09) :3292-3298

[42] Nanoconfined Ionic Liquids [J].

Zhang, Shiguo ;

Zhang, Jiaheng ;

Zhang, Yan ;

Deng, Youquan .

CHEMICAL REVIEWS, 2017, 117 (10) :6755-6833

[43] Facilitated phase transformation of PVDF in its composite with an ionic liquid [J].

Zhou, Huan ;

Wang, Haijun ;

Liu, Zixiong ;

Yang, Haibo ;

Yuan, Chunlei ;

Wang, Yuxin .

POLYMER, 2021, 220

[44] Novel Ferroelectric Polymers for High Energy Density and Low Loss Dielectrics [J].

Zhu, Lei ;

Wang, Qing .

MACROMOLECULES, 2012, 45 (07) :2937-2954

[45] Polar phase formation and competition in the melt crystallization of poly (vinylidene fluoride) containing an ionic liquid [J].

Zhu, Yun ;

Li, Chun ;

Na, Bing ;

Lv, Ruihua ;

Chen, Bibo ;

Zhu, Jie .

MATERIALS CHEMISTRY AND PHYSICS, 2014, 144 (1-2) :194-198

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