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Citation: WANG Yong, YAO Zhan-Hai, SONG Yong-Xian, YIN Jing-Hua. Influence of Reactive Extruding Conditions on the Grafting Degree, Grafting Efficiency and Melt Flow Rate of PP-g-GMA[J]. Chinese Journal of Applied Chemistry, ;2001, 18(6): 466-468. shu

Influence of Reactive Extruding Conditions on the Grafting Degree, Grafting Efficiency and Melt Flow Rate of PP-g-GMA

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

Received Date: 31 August 2000
Available Online: 2 January 2001
Fund Project: 国家"九七三"项目(G1999064806) (G1999064806)国家自然科学基金(59873022)资助课题 (59873022)

The functionalization of polypropylene grafted with glycidyl methacrylate (GMA) through reactive extrusion is reported. The influences of the concentration of GMA and initiator dicumyl peroxide (DCP), reaction temperature and residence time of materials in the extruder on the grafting degree (G_d), grafting efficiency (G_e) and melt flow rate (MFR) were investigated. The results showed that the G_d of PP-g-GMA was in direct proportion to the loading level of GMA. And there was a very limited effect of the concentration of the initiator on the grafting degree. The proper processing temperature window of the reative extrusion was 195~230℃. When the residence time of materials in the extruder was over one minute the grafting degree kept constant. The MFR of PP-g-GMA was proportional to the concentration of initiator and inversely proportional to the loading level of monomer. There were very limited effects of both the residence time and extruding temperature on the MFR of PP-g-GMA and no obvious influence of the concentration of monomer and initiator, extruding temperature and residence time of material in the extruder on the grafting efficiency of PP-g-GMA.
- polypropylene,
- glycidyl methacrylate,
- reactive extrusion,
- grafting copolymerization
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