Vibrational spectrum of PVDF and its interpretation

被引：394

作者：

Bormashenko, Y ^{[1
]}

Pogreb, R ^{[1
]}

Stanevsky, O ^{[1
]}

Bormashenko, E ^{[1
]}

机构：

[1] Coll Judea & Samaria, Lab Polymer & Composites Mat, Res Inst, IL-44837 Ariel, Israel

来源：

POLYMER TESTING | 2004年 / 23卷 / 07期

关键词：

PVDF; alpha; beta; gamma; delta-phases; IR spectrum; thermal history; boled; splitting of peaks; cooling rate;

D O I：

10.1016/j.polymertesting.2004.04.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

IR spectra of poled and non-poled PVDF films were studied. Non-poled extruded samples were annealed and cooled at different cooling rates. Then, FTIR spectra of all samples were taken under scanning with different diaphragms. It was found that the spectra and their interpretation depend strongly on the scale of the scanning procedure for both poled and non-poled films. Scanning by a diaphragm with a diameter D close to the size of beta-phase domains d reveals the presence of the beta-phase in the annealed non-poled PVDF, whereas spectra obtained with a "large" diaphragm (D much greater than d) do not show discernable peaks inherent to the beta-phase. Cooling rate influence on the beta-phase contents is strong. When the diameter of the diaphragm D and size of crystalline gamma inclusions are of the same magnitude, peak splitting is observed in the poled PVDF. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：791 / 796

页数：6

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