Journal of Radiation Research and Radiation Processing ›› 2020, Vol. 38 ›› Issue (1): 1-9.doi: 10.11889/j.1000-3436.2020.rrj.38.010201

• RADIATION CHEMISTRY •     Next Articles

Radiation preparation and properties of low-density polyethylene grafted maleic anhydride

YE Cuicui1,2,DING Xiaojun1,2,LI Linfan1,LI Jingye1,3()   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Shanghai Normal University, Shanghai 200234, China
  • Received:2019-11-19 Revised:2019-12-13 Accepted:2019-12-13 Online:2020-02-20 Published:2020-02-25
  • Contact: LI Jingye
  • About author:YE Cuicui (female) was born in February 1991, and obtained her master’s degree from Hangzhou Normal University in 2017. Now she is a graduate student at Shanghai Institute of Applied Physics, Chinese Academy of Sciences, majoring in inorganic chemistry
  • Supported by:
    National Natural Science Foundation of China(11575277)


Modification of low-density polyethylene (LDPE) by grafting it with a maleic anhydride (MAH) was conducted using a co-irradiation technique at room temperature under a vacuum atmosphere at absorbed doses of 10 kGy, 25 kGy, 50 kGy, and 100 kGy. The effects of the absorbed dose on the chemical structure and physical properties of LDPE-g-MAH were investigated. The Fourier transform infrared spectroscopy showed that the MAH was grafted onto the LDPE surface successfully. The grafting degree of the MAH increased with the absorbed dose. The melting temperature (Tm) and thermal degradation temperature (T5%) of the LDPE-g-MAH films decreased with the increasing absorbed doses because of the occurrence of crystal defects of LDPE caused by irradiation. However, the morphologies and crystal forms of LDPE did not change after irradiation. This work provides an effective strategy for radiation graft modification of LDPE.

Key words: Radiation grafting, Modification, Low-density polyethylene, Maleic anhydride

CLC Number: 

  • TL13