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Citation: ZHANG Zhenjiang, WAN Dong, XING Haiping, TANG Tao. The Effect of Tetramethylthiuram Disulfide on the Heat-induction Melt-grafting of Polypropylene[J]. Chinese Journal of Applied Chemistry, ;2011, 28(10): 1130-1134. doi: 10.3724/SP.J.1095.2011.00648 shu

The Effect of Tetramethylthiuram Disulfide on the Heat-induction Melt-grafting of Polypropylene

ZHANG Zhenjiang ^a,b ,
WAN Dong ^a,b ,
XING Haiping ^a,b ,
TANG Tao ^a,,

1.
a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
2.
b Graduate School of the Chinese Academy of Sciences, Beijing

Corresponding author: TANG Tao,
Received Date: 2 November 2010
Available Online: 15 January 2011
Fund Project: 国家自然科学基金(50921062,50873099和20804045)资助项目 (50921062,50873099和20804045)

Trimethylol propane triacrylate(TMPTA) and polypropylene(PP) powder without any additives were used to prepare long chain branched polypropylene by in situ heat-induction melt-grafting.The long chain branches of PP with molecular mass over twice the molecular mass between successive entanglements(>2M_e) have dramatic effect on the rheological properties.The effect of tetramethylthiuram disulfide(TMTD) on the heat-induction melt-grafting was studied.It was found that the grafting degree of TMPTA decreased but the branching efficiency increased when TMTD was added to the system.According to the result of theoretic calculation,the branching frequency increased from 0.03 to 0.34 when TMTD was employed under the same conditions.
- polypropylene,
- melt grafting,
- long chain branched
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