Gamma-ray irradiation-induced variations in structural and electrical properties of PVP neutral polymer in water

被引：8
|
作者：
Belaidi, Amal [1 ,2 ]
Guettari, Moez [1 ]
Tajouri, Tahar [1 ]
机构：
[1] Univ Tunis, NMR Polymers & Composites Lab, Preparatory Inst Engn Studies Tunis, Tunis, Tunisia
[2] Univ Carthage, Fac Sci Bizerte, Carthage 7021, Tunisia
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2019年 / 322卷 / 02期
关键词：
Polyvinylpyrrolidone; Gamma irradiation; Electrical conductivity; PHYSICOCHEMICAL PROPERTIES; CONDUCTIVITY; CELLULOSE; POLYVINYLPYRROLIDONE; ELECTROLYTE; TRANSITION; CHITOSAN; UHMWPE; SUGAR;
D O I：
10.1007/s10967-019-06803-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The purpose of this study was to improve polyvinylpyrrolidone (PVP) electrical conductivity by means of gamma irradiation for a dosimetric application. PVP was irradiated with various doses of gamma radiation and dissolved in water to investigate its structural, optical, and electrical characteristics. Electron paramagnetic resonance measurements (EPR) depicted the presence of free radical (H-center dot). FTIR and UV-visible spectra revealed a structural deformation in the post-irradiated polymer (PVP*) through chain scission. In addition, the gap and Urbach energy were investigated and discussed. The obtained results of electrical conductivity show an exponential behavior indicating a character of a pseudo-polyelctrolyte. The pH measurements revealed an acidic character of PVP*.
引用
收藏
页码：869 / 877
页数：9
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