Investigation on Molecular Structures of Electron-Beam-Irradiated Low-Density Polyethylene by Rheology Measurements
Wang, HT; Li, LF; Guan, JP; Jiang, HQ; Shen, RF; Ding, XJ; Li, JY; Li, YJ
2018
发表期刊INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
卷号57期号:12页码:4298-4310
文章类型期刊论文
摘要While the effect of high-energy irradiation on low-density polyethylene (LDPE) has been extensively investigated, the molecular structure changes under different irradiation conditions are less well understood. In this work, we have made systematic investigations on the molecular structure of electron beam irradiated LDPE under various irradiation conditions. The microstructures have been mainly characterized by rheological measurements using small amplitude oscillatory shear (SAOS) and analyzed by a weighted relaxation spectrum and a van Gurp-Palmen plot. It was found that the linear viscoelasticity of LDPE exhibited a strong dependence on the radiation atmosphere due to oxidative degradation in the presence of oxygen. An improved/destroyed network structure could be acquired when LDPE was irradiated in a nitrogen/oxygen environment, as compared with that in air. Differences became more significant when LDPE was irradiated at higher temperature (80 degrees C) due to the facilitated diffusion of free radicals within the polymer matrix. For the first time, the effects of electron beam on LDPE under various irradiating conditions have been clarified.
关键词Cross-linking Mechanical-properties Physical-properties Packaging Materials Ionizing-radiation Rubber-elasticity Cable Materials Spin-resonance Free-radicals Networks
DOI10.1021/acs.iecr.8b00062
收录类别SCI
语种英语
WOS记录号WOS:000428972500017
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29057
专题中科院上海应用物理研究所2011-2018年
作者单位1.Wang, HT
2.Li, LF
3.Guan, JP
4.Jiang, HQ
5.Shen, RF
6.Ding, XJ
7.Li, JY
8.Li, YJ
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GB/T 7714
Wang, HT,Li, LF,Guan, JP,et al. Investigation on Molecular Structures of Electron-Beam-Irradiated Low-Density Polyethylene by Rheology Measurements[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2018,57(12):4298-4310.
APA Wang, HT.,Li, LF.,Guan, JP.,Jiang, HQ.,Shen, RF.,...&Li, YJ.(2018).Investigation on Molecular Structures of Electron-Beam-Irradiated Low-Density Polyethylene by Rheology Measurements.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,57(12),4298-4310.
MLA Wang, HT,et al."Investigation on Molecular Structures of Electron-Beam-Irradiated Low-Density Polyethylene by Rheology Measurements".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 57.12(2018):4298-4310.
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