β-Phase Crystallization of Poly(vinylidene fluoride) in Poly(vinylidene fluoride)/Poly(ethyl methacrylate) Blends

被引：0
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作者：
Zi-Jie Huang
Jing Jiang
Gi Xue
Dong-Shan Zhou
机构：
[1] Nanjing University,Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology, and The State Key Laboratory of Coordination Chemistry
[2] Yili Normal University,School of Physical Science and Technology, Xinjiang Key Laboratory and Phase Transitions and Microstructures in Condensed Matters
来源：
Chinese Journal of Polymer Science | 2019年 / 37卷
关键词：
-Crystal of PVDF; Mesophase; PVDF/PEMA blend; Ultra-fast scanning calorimetry;
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摘要：
The nature of the crystalline phase of poly(vinylidene fluoride) (PVDF) in compatible blends with poly(ethyl methacrylate) (PEMA) was investigated by using X-ray diffraction (XRD), infrared microscopy (IR) and differential scanning calorimetry (DSC). The β phase of PVDF was observed after quenching from the melt and further annealing above the glass transition temperature over a composition range. The PVDF/PEMA blend with weight ratio of 3:2 has formed higher content of PVDF β crystals than others. By taking advantage of fast cooling rate of ultrafast differential scanning calorimeter (UFDSC), the quenching process of blends was modeled and tested simultaneously, and the melting behavior of β crystals in all blends was investigated. Three types of crystallization behavior of β phase PVDF in blends were found after quenching-annealing at different temperatures.
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页码：94 / 100
页数：6
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