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Citation: CAI Chuan-Lun, SHI Qiang, LI Li-Li, YIN Li-Gang, TANG Gong-Ben, YIN Jing-Hua. Preparation,Structure and Properties of PP-g-AA Grafting Copolymers[J]. Chinese Journal of Applied Chemistry, ;2007, 24(7): 737-741. shu

Preparation,Structure and Properties of PP-g-AA Grafting Copolymers

1.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: YIN Jing-Hua,
Received Date: 9 August 2006
Available Online: 29 September 2006
Fund Project: 国家自然科学基金重大项目(50290090)资助 (50290090)

Polypropylenes grafted with AA were prepared by reactive extrusion with pre-irradiated PP (rPP) as the homogeneous initiator.The effect of pre-irradiated dose,fraction of rPP and concentration of acrylic acid on grafting reaction was studied,and the grafted PP was characterized by means of Fourier transition infrared spectroscopy (FTIR),differential scanning calorimetry (DSC) and polarized light microscopy (PLM).The results show that the degradation of PP was suppressed effectively with this novel method for preparing PP-g-AA copolymers,and grafted copolymers with good mechanical properties were obtained.It was found that the product with higher G_d (0.19%) and relatively excellent mechanical properties can be produced if the mass ratio of PP/rPP/AA is 90:10:0.8,where selected preirradiation dose of rPP is 4 kGy.Moreover,an adhesive strength of 4.88 kN/m was reached in the PP-g-AA/aluminium laminate.
- polypropylene,
- AA,
- reactive extrusion,
- pre-irradiated
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