Journals / ARI The Bulletin of the Istanbul Technical University / 2004 / Cilt: 54 - Sayı: 2

Obtaining the ratio of termination rate constants of poly (methyl methacrylate) by the ultrasonic scission method

Pages
6–11
Publication Date
2022-10-11
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The Chi square map obtained by fitting the data to Schmid's equation gives the ratio of the rate constants for termination by disproportionation and by combination as $k_{td}/k_{tc}$ = 2.6 ± 0.4.

📌 3 Key Takeaways

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Objective & Hypothesis:The termination step in radical polymerization occurs either by combination or by disproportionation.
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Key Findings & Data:The termination mechanism of poly (methyl methacrylate) in sonochemical environment is studied by the ultrasonic scission method.
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Conclusion & Impact:The Chi square map obtained by fitting the data to Schmid's equation gives the ratio of the rate constants for termination by disproportionation and by combination as $k_{td}/k_{tc}$ = 2.6 ± 0.4.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The termination step in radical polymerization occurs either by combination or by disproportionation. The termination mechanism of poly (methyl methacrylate) in sonochemical environment is studied by the ultrasonic scission method. The method is improved to give quantitative results by incorporating non-linear least squares analysis of the data. The Chi square map obtained by fitting the data to Schmid's equation gives the ratio of the rate constants for termination by disproportionation and by combination as $k_{td}/k_{tc}$ = 2.6 ± 0.4.

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Cite This Article

KOÇ, Ö. A., GİZ, A., GİZ, Ç. H. (2022). Obtaining the ratio of termination rate constants of poly (methyl methacrylate) by the ultrasonic scission method. ARI The Bulletin of the Istanbul Technical University, Cilt: 54 - Sayı: 2, 6–11. https://ajindex.com/articles/448138

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References (30)

  1. G. J. Price, Adv. in Sonochem., 1, 231 (1990)
  2. G. Madras, S.Kumar, S. Chattopadhyay, Polym.Degrad. and Stab., 69, 73 (2000)
  3. G. Madras, S. Chattopadhyay, Polym. Degrad. and Stab., 71, 273 (2001)
  4. G. Madras, V. Karmore, Polym. Int., 50, 683(2001)
  5. K. S. Suslick, (Ed), Ultrasound. Its Chemical,Physical and Biological Effects, VCH publishers,New York (1988)
  6. T. J. Mason and J. P. Lorimer, Sonochemistry,Theory, Applications and Uses of Ultrasound in chemistry, Ellis Harwood Limited, John Wiley & Sons, New York (1988)
  7. M. S. Doulah, J. App. Polym. Sci., 22, 1735(1978)
  8. A. Giz, H. Çatalgil-Giz, M. Sunar, Macromol. Theory and Sim., 10, 117 (2001)
  9. P. A. R. Glynn, B. M. E. Van der Hoff, P. M. Reilly, J. Macromol. Sci. Chem., A6, 1653 (1972)
  10. P. A. R. Glynn, B. M. E. Van der Hoff, P. M. Reilly, J. Macromol. Sci. Chem., A7, 1695 (1973)
  11. G. Schmid, Phys. Z., 41, 326 (1940)
  12. G. Schmid, Z. Phys. Chem., A186, 113 (1940)
  13. P. Cacioli, G. Moad, A. K. Serelis and D. H. Solomon, Polym. Bull. (Berlin), 11, 325 (1984)
  14. T. Kashiwagi, A. Inaba, J. E. Brown, K. Hatada, T. Kitayama and E. Masuda, Macromolecules, 19, 2160 (1986)
  15. A. Meisters, G. Moad, E. Rizzardo and D. H. Solomon, Polym. Bull(Berlin), 20, 499 (1988)
  16. L. E. Manring, Macromolecules, 22, 2673 (1989)
  17. C. H. Bamford and E. F. T. White, Trans. Fara­day Soc, 54, 268 (1958)
  18. S, Bizilj, D. P. Kelly, A. K. Serelis, D. H. Solomon and K. E. White, Aust. J. Chem., 38, 1657 (1985)
  19. P. Cacioli, D. G. Hawthorne, R. L. Laslett, E. Rizzardo and D. H. Solomon, Macromol. Sci and Chem., A23, 839 (1986)
  20. J. C. Bevington, H. W. Melville and R. P. Tay­lor, J. Polym. Sci., 14, 463 (1954)
  21. G. Ayrey and C. G. Moore, J. Polym. Sci., 36, 41, (1959)
  22. G. V. Schulz, G. Henrici-Olive and S. Olive, Makromol. Chem., 31, 88 (1959)
  23. C. H. Bamford and A. D. Jenkins, Nature (Lon­don) 176, 78 (1955)
  24. C. H. Bamford, A. D. Jenkins and R. Johnston, Trans. Faraday Soc, 55, 179 (1959)
  25. P. W. Allen, A. G. Ayrey and C. G. Moore, J. Polym. Sci, 36, 55 (1959)
  26. G. M. Burnett and A. M. North, Makromol. Chem., 60, 960 (1964)
  27. N. Erolan, F. Ansan, and H. Çatalgil-Giz, Angew. Makromol. Chem., 226, 53 (1995)
  28. H. Çatalgil-Giz, A. Giz and A. Öncül-Koç, Polym. Bull. 43, 215 (1999)
  29. G. Schmidt-Naake, M. Drache, M. Weber, Macromol. Chem. Phys., 203, 2232 (2002)
  30. J. Brandrup, A. H. Immergut and E. A. Grulke, Ed., Polymer Handbook, VII,