Effect of radiation induced crosslinking and degradation of ETFE films

被引：23
作者：
Zen, H. A. [1 ]
Ribeiro, G. [1 ]
Geraldes, A. N. [1 ]
Souza, C. P. [1 ]
Parra, D. F. [1 ]
Lugao, A. B. [1 ]
机构：
[1] Ctr Chem & Environm, Inst Energy & Nucl Res, BR-05508000 Sao Paulo, Brazil
来源：
RADIATION PHYSICS AND CHEMISTRY | 2013年 / 84卷
关键词：
Radiation crosslinking; ETFE; Rheology; ETHYLENE-TETRAFLUOROETHYLENE COPOLYMER; MEMBRANES; PERFORMANCE; LINKER;
D O I：
10.1016/j.radphyschem.2012.06.030
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study the ETFE film with 125 mu m of thickness was placed inside a nylon bag and filled with either acetylene, nitrogen or oxygen. Following the procedure, the samples were irradiated at 5, 10 and 20 kGy. The physical and chemical properties of the modified and pristine films were evaluated by rheological and thermal analyses (TG and DSC), X-ray diffraction (XRD) and infrared spectroscopy (IR-ATR). In rheological analysis the storage modulus (G') indicates opposite profiles when the atmospheres (acetylene and oxygen) are evaluated according to the absorbed dose. For the samples submitted to radiation under oxygen atmosphere it is possible to observe the degradation process with the low levels of the storage modulus. The changes in the degree of crystallinity were verified in all modified samples when compared to the pristine polymer and this behavior was confirmed by DSC analysis. A decrease in the intensity of crystalline peak by X-ray diffraction was observed. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：136 / 139
页数：4
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