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

doi:10.3724/SP.J.1095.2011.00648

Chinese Journal of Applied Chemistry ›› 2011, Vol. 28 ›› Issue (10): 1130-1134.DOI: 10.3724/SP.J.1095.2011.00648

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

ZHANG Zhenjiang^1,2, WAN Dong^1,2, XING Haiping^1,2, TANG Tao^1*

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

Received:2010-11-01 Revised:2010-12-28 Published:2011-10-10 Online:2011-10-10

Abstract

Abstract:

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(＞2Me) 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.

Key words: Polypropylene, melt grafting, long chain branched

CLC Number:

O631.1

ZHANG Zhenjiang1,2, WAN Dong1,2, XING Haiping1,2, TANG Tao1*. The Effect of Tetramethylthiuram Disulfide on the Heat-induction Melt-grafting of Polypropylene[J]. Chinese Journal of Applied Chemistry, 2011, 28(10): 1130-1134.

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

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