ESR Study on Peroxide Modification of Polypropylene

Industrial and Engineering Chemistry Research

Volumn 36, Issue 4, 1997, Pages 1130-1135

  Zhou, Weixia ^a   Zhu, Shiping ^a  

^a MCMASTER UNIVERSITY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

CHEMICAL MODIFICATION; COMPOSITION EFFECTS; ELECTRON SPIN RESONANCE SPECTROSCOPY; FREE RADICALS; PEROXIDES; THERMAL EFFECTS;

CONCENTRATION EFFECTS;

POLYPROPYLENES;

EID: 0031122045     PISSN: 08885885     EISSN: None     Source Type: Journal    
DOI: 10.1021/ie960410p     Document Type: Article

References (30)

1. Bamford, C. H. Radical Polymerization. In Encyclopedia of Polymer Science and Engineering; Kroschwitz, J. I., Ed.; Wiley: New York, 1985; Vol. 13, p 789.
2. Benson, S. W.; North, A. M. The Kinetics of Free Radical Polymerization Under Conditions of Diffusion-Controlled Termination. J. Am. Chem. Soc. 1962, 84, 935.
3. de Boer, J.; Pennings, A. J. Crosslinking of Ultra-High Molecular Weight Polyethylene in the Melt by Means of 2,5-Dimethyl-2,5-Bis(tert-butyldioxy)-3-Hexyne 2. Crystallization Behavior and Mechanical Properties. Polymer 1982, 23, 1944.
4. de Vries, K.; Roylance, D. Electron Spin Resonance. In Encyclopedia of Polymer Science and Engineering; Kroschwitz, J. I., Ed.; Wiley: New York, 1985; Vol. 5, p 687.
5. Dorn, M. Modification of Molecular Weight and Flow Properties of Thermoplastics. Adv. Polym. Technol. 1985, 5, 87.
6. Gilbert, B. C.; Dobbs, A. J. Electron Spin Resonance Studies of the Decomposition of Organic Peroxides. In Organic Peroxides; Swern, D., Ed.; Wiley Interscience: New York, 1972; Vol. 3, p 271.
7. Hamielec, A. E.; Gloor, P. E.; Zhu, S. Kinetics of Free Radical Modification of Polypropylene in Extruders-Chain Scission, Crosslinking and Grafting. Can. J. Chem. Eng. 1991, 69, 611.
8. Kamachi, M. ESR Studies on Radical Polymerization. Adv. Polym. Sci. 1987, 82, 207.
9. Kusumoto, N. ESR Studies of Polypropylene with Different Stereospecificities. J. Polym. Sci., Part C 1968, 23, 837.
10. Lambla, M. Reactive Extrusion: A New Tool for the Diversification of Polymer Materials. Macromol. Symp. 1994, 83, 37.
11. Ooi, T.; Shitsubo, M.; Hama, Y.; Shinohara, K. E.s.r. Study of γ-Irradiated Isotactic and Atactic Polypropylene. Polymer 1975, 16, 510.
12. Poole, C. P. Electron Spin Resonance: A Comprehensive Treatise on Experimental Techniques; Interscience: New York, 1967.
13. Ranby, B.; Rabek, J. ESR Spectroscopy in Polymer Research; Springer-Verlag: New York, 1977.
14. Russell, G. A. Reactivity, Selectivity, and Polar Effects in Hydrogen Atom Transfer Reactions. In Free Radicals; Kochi, J. K., Ed.; Wiley: New York, 1973; p 275.
15. Russell, G. T.; Napper, D. H.; Gilbert, R. G. Termination in Free-Radical Polymerizing Systems at High Conversion. Macromolecules 1988, 21, 2133.
16. Ryu, S. H.; Gogos, C. G.; Xanthos, M. Parameters Affecting Process Efficiency of Peroxide Initiated Controlled Degradation of Polypropylene. Adv. Polym. Technol. 1991/1992, 11 (2), 121.
17. Sheldon, R. A.; Kochi, J. K. Pair Production and Cage Reactions of Alkyl Radicals in Solution. J. Am. Chem. Soc. 1970, 92, 4395.
18. Shida, T. Electron Spin Resonance and Optical Studies of t-butyl Peroxide Ions Produced by γ-Irradiation. J. Phys. Chem. 1968, 72, 723.
19. Shimada, S. ESR Studies on Molecular Motion and Chemical Reactions in Solid Polymers in Relation to Structure. Prog. Polym. Sci. 1992, 17, 1045.
20. Suwanda, D.; Lew, R.; Balke, S. T. Reactive Extrusion of Polypropylene I: Controlled Degradation. J. Appl. Polym. Sci. 1988a, 35, 1019.
21. Suwanda, D.; Lew, R.; Balke, S. T. Reactive Extrusion of Polypropylene II: Degradation Kinetic Modeling. J. Appl. Polym. Sci. 1988b, 35, 1033.
22. Tang,Y.; Tzoganakis, C.; Hamielec, A. E.; Vlachopoulos, J. Peroxide Crosslinking of LLDPE During Reactive Extrusion. Adv. Polym. Technol. 1989, 9, 257.
23. Tzoganakis, C. Peroxide Degradation of PP during Reactive Extrusion. Ph.D. Thesis, McMaster University, Hamilton, Canada, 1988.
24. Tzoganakis, C.; Vlachopoulos, J.; Hamielec, A. E. Production of Controlled Rheology Polypropylene Resins by Peroxides Promoted Degradation During Extrusion. Polym. Eng. Sci. 1988a, 28, 170.
25. Tzoganakis, C.; Vlachopoulos, J.; Hamielec, A. E. Controlled Degradation of Polypropylene. Chem. Eng. Prog. 1988b, Nov, 47.
26. Xanthos, M. Reactive Extrusion: Principles and Practices; Hanser: New York, 1992.
27. Zhu, S.; Hamielec, A. E. Termination of Trapped Radicals at Elevated Temperatures during Copolymerization of MMA/EGDMA. Polymer 1990, 31, 1726.
28. Zhu, S.; Hamielec, A. E. Heat Effect for Free Radical Polymerization in Glass Ampoule Reactors. Polymer 1991, 32, 3021.
29. Zhu, S.; Hamielec, A. E. Kinetics of Polymeric Network Synthesis via Free Radical Mechanisms. Makromol. Chem., Macromol. Symp. 1992, 63, 135.
30. Zwolenik, J. J. Photolytic Generation and Kinetic Electron Spin Resonance Spectrometry of Cumylperoxy Radicals. J. Phys. Chem. 1967, 71, 2464.