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Citation: WU Shi-Shan, XU Xi. Effect of Ultraviolet Irradiation on Molecular Structure of High Density Polyethylene[J]. Chinese Journal of Applied Chemistry, ;2001, 18(9): 758-760. shu

Effect of Ultraviolet Irradiation on Molecular Structure of High Density Polyethylene

WU Shi-Shan ,
XU Xi

1.
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065

Received Date: 6 November 2000
Available Online: 8 May 2001
Fund Project: 福特-中国研究与发展基金项目(9715407) (9715407)国家重点基础研究专项经费资助项目(G199064809) (G199064809)

The structure change of HDPE under ultraviolet irradiation in air and O₂ atmosphere was studied by elemental analysis, FTIR, XPS, GPC.The oxygen containing groups such as C=O C-O were observed in molecular chains of HDPE after irradiation.The contents of C=O and C-O increase with irradiation time.The O₂ acceleretes the rate of HDPE functionalization.During ultraviolet irradiation, the molecular weight of HDPE is decreased and its MWD becomes narrow.
- HDPE,
- ultraviolet light,
- irradiation,
- functionalization
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