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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
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume57Issue:12Pages:4298-4310
Subtype期刊论文
AbstractWhile 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.
KeywordCross-linking Mechanical-properties Physical-properties Packaging Materials Ionizing-radiation Rubber-elasticity Cable Materials Spin-resonance Free-radicals Networks
DOI10.1021/acs.iecr.8b00062
Indexed BySCI
Language英语
WOS IDWOS:000428972500017
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/29057
Collection中科院上海应用物理研究所2011-2019年
Affiliation1.Wang, HT
2.Li, LF
3.Guan, JP
4.Jiang, HQ
5.Shen, RF
6.Ding, XJ
7.Li, JY
8.Li, YJ
Recommended Citation
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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