Journal of Radiation Research and Radiation Proces ›› 2012, Vol. 30 ›› Issue (3): 148-152.doi: 10.11889/j.1000-3436.2012.rrj.30.120304

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Pre-irradiation-induced grafting of acrylic acid onto SBS powder

LI Jianxi1  LI Linfan2  YANG Xingkun1  LI Jihao2  YU Ming2  DENG Bo2  LI Jingye2   

  1. 1(College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China)
    2(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China)
  • Received:2011-10-26 Revised:2011-12-06 Online:2012-06-20 Published:2014-09-11

Abstract:

In this paper acrylic acid was grafted onto SBS powder using pre-irradiation method to produce SBS-g-PAA. The effects of monomer concentration, absorbed dose, reaction time and temperature on degree of grafting were discussed in detail. The FTIR spectra of SBS-g-PAA proved that the polyacrylic acid ha been grafted onto SBS powder successfully. Moreover, the thermogravimetry, X-rays diffraction and the scanning electron microscope were also investigated. Compared with pristine SBS powder, the SBS-g-PAA powder analysis indicated that the thermal degradation exhibited a two-step degradation pattern meanwhile the crystallinity declined and the surface became smoother because of the introduction of polyacrylic acid.

Key words: SBS(Styrene-butadiene-styrene triblock copolymer), Pre-irradiation grafting, Powder, Acrylic acid 

CLC Number: 

  • O631.3+1,0631.3+4,0631.6