Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (5): 518-523.DOI: 10.11944/j.issn.1000-0518.2020.05.190361

• Full Papers • Previous Articles     Next Articles

Melt Functionalization of Polyethylene Initiated by N-Hydroxyphthalimide

WEN Lianga,YANG Huaweib*(),SHI Hengchongb,LUAN Shifangb,YIN Jinghuab,SHI Deana*()   

  1. aHubei Provincial Key Laboratory of Polymer,Materials School of Materials Science and Engineering,Hubei University,Wuhan 430062,China
    bState Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2019-12-30 Accepted:2020-03-24 Published:2020-05-01 Online:2020-04-29
  • Contact: YANG Huawei,SHI Dean
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51803213, No.51973052)

Abstract:

N-Hydroxyphthalimide (NOP) was used as the radical initiator in the melt graft polymerization of linear low density polyethylene (LLDPE) with four N-halamine precursors, methacrylamide (MA), N-tert-butyl acrylamide (N-t-BuA), maleimide (MI) and 2,4-diamino-6-diallylamino-1,3,5-triazine (NDAM). Meanwhile, the traditional peroxide method was conducted for comparison by using dicumyl peroxide (DCP) as the free radical initiator for melt grafting. The grafting efficiency of the NOP initiator is controlled by the molecular structure and the loading level of the monomer based on the quantitative Fourier transform infrared spectrometer (FT-IR) results. N-t-BuA shows the highest grafting efficiency, which is 2.5%~16.0% lower than that in the DCP system, while MI has the least grafting efficiency, about 55% of the DCP method. However, the crosslink side reaction in the NOP system is more controllable than that in the DCP system, as revealed by the real-time torque, the gel content and the melt index data.

Key words: N-hydroxyphthalimide, melt free radical grafting, polyethylene