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Citation: YU Qiang, LIN Ming-De, GONG Fang-Hong, XU Qing. Peroxide Crosslinking of Syndiotactic Polypropylene in the Presence of Polyfunctional Monomers[J]. Chinese Journal of Applied Chemistry, ;2000, 17(6): 624-627. shu

Peroxide Crosslinking of Syndiotactic Polypropylene in the Presence of Polyfunctional Monomers

1.
Department of Chemical Engineering, Jiangsu Institute of Petrochemical Technology, Changzhou 213016

Received Date: 16 December 1999
Available Online: 5 April 2000

Peroxide crosslinking of metallocene syndiotactic polypropylene(sPP) has been performed in the presence of divinyl benzene(DVB), ethyleneglycol dimethylacrylate(EGDMA), trimethylol propane trimethylacrylate(TMPTMA) and triallyl isocyanuate(TAIC) as coagents. The polyfunctional monomers were found to prohibite the thermal degradation of sPP. The crosslinked sPP with higher gel fraction were obtained in the system comprised of BPO and DVB. The gel fraction of the crosslinked sPP increased with increase in BPO and/or DVB. The gelation rate increased linearly with the concentration of DVB and BPO, following first order kinetics. The apparent activation energy of crosslinking was 62.5 kJ/mol as determined from the relations between gelation rate and crosslinking temperature.
- syndiotactic polypropylene,
- peroxide crosslinking,
- polyfunctional monomer,
- kinetics
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