| 电子辐射对聚乙烯凝胶形成和不饱和结构的影响 |
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| 引用本文： | 廖凯莱 Ward.,TC. 电子辐射对聚乙烯凝胶形成和不饱和结构的影响[J]. 中山大学学报(自然科学版), 1990, 29(1): 48-54 |
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| 作者姓名： | 廖凯莱 Ward. TC |
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| 作者单位： | 中山大学高分子研究所，Virginia Polytechnic Institute and State University USA |
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| 摘 要： |
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| 关 键 词： | 聚乙烯 电子束 辐射 凝胶 |
Effects of Electron Beam Irradiation on the Gel Formation and Unsaturation of Polyethylenes |
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| Liao Kairong,Thomas C.Ward Institute of Polymer Science. Effects of Electron Beam Irradiation on the Gel Formation and Unsaturation of Polyethylenes[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 1990, 29(1): 48-54 |
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| Authors: | Liao Kairong Thomas C.Ward Institute of Polymer Science |
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| Affiliation: | Liao Kairong;Thomas C.Ward Institute of Polymer Science |
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| Abstract: | Four types of polyethylenes(HDPE,LDPE,LLDPE,and VLDPE)were irradiated with low energy electron beam in N_2 atmosphere.The results show that the molecular structure and physical morphology have great influ-ence on the gel points and the energy yields G(X)and G(S)for crosslinks and scissions respectively.The irradiation causes changes of unsaturation structure of the samples.The increase of trans-vinylene obeys the zero-order reaction kinetics within the dose range studied here(<26 Mrads).In the case of dose less than 14 Mrads,the decay of terminal vinyl can be treated with the first-order reaction kinetics;however,its decay behavior diverges from the kinetic curves with further increasing dose for all samples because of the chain seissions,which lead to the increase of the vinyl |
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| Keywords: | electron beam irradiation polyethylene gel formation unsaturation |
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