Thermal degradation of polymers and polymer blends

Year 2014, Volume: 42 Issue: 1, 143 - 150, 01.03.2014

Satılmış Basan

Abstract

Polymers and their blends undergo various thermal or radiation effects in areas of usage. Therefore, in the academic investigations and industrial applications, radiolysis and thermal degradation of polymers, polymer blends and mixed polymers is very important. In this study, recent studies on ther- mal degradation of heated and irradiated polymers and their blends being done by the second branch in left side of our polymer tree Fig.1 are reviewed. The studies have been classified as preparation and investigation of graft copolymer structures with γ-rays, determination of gelation dose for γ-irradiated polymers, thermal degradation of γ-irradiated polymers, determination of thermal gelation points of polymers, comparison of various isothermal thermogravimetric methods and new compact method, and preparation and thermal degradation of maleic anhydride copolymers and terpolymers.

Keywords

Polymer, polymer blends, thermal stability, thermal degradation, Radiation, thermal gelation, gelation dose, maleic anhydride, graft copolymer, terpolymer

Polimerlerin ve polimer karışımlarının ısısal bozunması

Abstract

P olimerler ve polimer karışımları uygulama alanlarında çeşitli ısısal etkilere veya yüksek enerjili ışın etkilerine maruz kalırlar. Bu yüzden, akademik araştırmalarda ve endüstriyel uygulamalarda polimerlerin ve polimer karışımlarının radyolizi ve ısısal bozunması çok önemlidir. Bu çalışmada, polimer ağacımızın soldan ikinci dalı tarafından, ısıtılmış ve ışınlanmış polimerlerin ve polimer karışımlarının ısısal bozunması ile ilgili yaptıkları son çalışmalar gözden geçirilmiştir. Çalışmalar, γ-ışınları ile aşı kopolimerlerinin hazırlanması ve yapılarının incelenmesi, γ-ışınları ile ışınlanmış polimerlerin jelleşme dozunun belirlenmesi, γ-ışınları ile ışınlanmış polimerlerin ısısal bozunması, polimerlerin ısısal jelleşme noktasının belirlenmesi, çeşitli izotermal termogravimetrik yöntemlerin kıyaslanması,bu alanda yeni bir yöntem önerilmesi, maleik anhitrit kopolimer ve terpolimerlerin hazırlanması ve ısısal bozunması olarak sınıflandırılmıştır

Keywords

Polimer, polimer karışımları, ısısal kararlılık, ısısal bozunma, ışıma, ısısal jelleşme, jelleşme dozu, maleik anhdrit, aşı kopolimeri, terpolimer

References

• 1. A. Bhattacharya, Radiation and industrial polymers, Prog. Polym. Sci., 25 (2000) 371.
• 2. S. Basan, The Effect of Composition on the Thermal Stability of Vinyl Acetate/ Vinyl Chloride Graft Copolymers. Ph.D. Thesis, Hacettepe University, Ankara (1982).
• 3. O. Güven, S. Basan, Grafting of Vinyl Acetate on Poly (Vinyl Chloride) with γ-Rays. Cumhuriyet Univ., Faculty Sci. Art J. Sci., 1 (1984) 101.
• 4. O. Güven, S. Basan, Spectrophotometric investigation of structure of vinyl acetate/ vinyl chloride graft copolymers. VII. National Science Congress, Chemistry Section, TUBITAK Publications, 543 (1982) 935.
• 5. S. Basan, O.güven, The effect of composition on the thermal stability of vinyl acetate/ vinyl chloride graft copolymers-I results of dynamic thermogravimetry (TGA). I. National Macromolecule Symposium, 239- 243, Ankara, 28-29 September 1983.
• 6. S. Basan, O. Güven, The effect of composition on the thermal stability of vinyl acetate/ vinyl chloride graft copolymers-II results of isothermal thermogravimetry (TGA). I. National Macromolecule Symposium, 244- 250, Ankara, 28-29 September 1983.
• 7. S. Basan, O. Güven, The effect of composition on the thermal stability of vinyl acetate/ vinyl chloride graft copolymers-III results of UV-VIS spectroscopy. I. National Macromolecule Symposium, 251-256, Ankara, 28-29 September 1983.
• 8. O. Güven, S. Basan, Effect of γ-rays on the thermal degradation of vinyl acetate/vinyl chloride graft copolymers. Cumhuriyet Univ. Faculty Sci. Art J. Sci., 1 (1983) 79.
• 9. O. Güven, V. Deniz, S. Basan, U. Tarhan, Spectrophotometric determination of gelation dose in the γ-irradiation of poly(vinyl chloride), 5th.”Tihany Symposium on Radiation Chemistry, Siofok, 19-24 September 1982.
• 10. O. Güven, F. Yiğit, S. Basan, Spectrophotometric determination of gelation dose of γ-irradiated poly(vinyl acetate), I. National Macromolecule Qollocium, Ankara, 12 December 1984.
• 11. S. Basan, O. Güven, Thermal degradation of γ-irradiated poly(vinyl chloride). Polym. Degrad. Stability, 11 (1985) 45.
• 12. S. Basan, Thermal degratadion of γ-irradiated poly(vinyl acetate), Polym. Degrad. Stability, 39 (1993) 7.
• 13. S. Basan, Contribution of gel and sol fractions to the thermal stability of γ-irradiated poly(vinyl acetate) Polym. Degrad. Stability, 39 (1993) 151.
• 14. S. Basan, determination of thermal gelation points of a vinylidene chloride/acrylonitrile copolymer by a spectrophotometric technique, Polym. Degrad. Stability, 33 (1991) 429.
• 15. S. Basan, E. Karadağ, Thermal gelation of poly(vinyl chloride), Polym. Int., 38 (1995) 83.
• 16. A. Boztuğ, H.B. Zengin, S. Basan, Determination of gelation temperature of poly(vinyl chloride) by thermomechanical and thermogravimetric parameters. J. Appl. Polym. Sci., 96 (2005) 1635.
• 17. S. Basan, O. Güven, A comparison of various isothermal thermogravimetric methods applied to the degradation of PVC, Thermochim. Acta, 106 (1986) 169.
• 18. S. Basan, O. Güven, Compact methods for the kinetic analysis of isothermal thermogravimetric curves, Thermochim. Acta, 106 (1986) 179.
• 19. I.C. Mcneıll, J.G. Gorman, S. Basan, Thermal degradation of blends of PVC with poly(tetramethylene sebacate), Polym. Degrad. Stability, 33 (1991) 263.
• 20. I.C. McNeıll, S. Basan, Thermal degradation of blends of PVC with polydimethylsiloxane, Polym. Degrad. Stability, 39 (1993) 139.
• 21. I.C. Mcneıll, S. Basan, Thermal degradation of blends of PVC with bisphenol A polycarbonate, Polym. Degrad. Stability, 39 (1993) 145.
• 22. I.C. Mcneıll, S. Basan Thermal degradation of blends of PVC with poly(ethylene adipate), Polym. Degrad. Stability, 41 (1993) 311.
• 23. A. Boztuğ, H.B. Zengin, S. BAsan, Thermomechanical and thermogravimetric analysis of blends of poly(vinyl chloride) with maleic anhydride-allyl propionate copoplymer, J. Mol. Structure, 697 (2004) 61.
• 24. A. Boztug, S. Basan, Synthesis and characterization of maleic anhydride-styrene-allyl propionate terpolymer ester derivatives, J. Appl. Polym. Sci., 89 (2003) 296.
• 25. A. Boztuğ, S. Basan, O.E. Ekberov, Characterization and synthesis of some alternating terpolymers of maleic anhydride, Mat. Res. Innovat., 8 (2004) 89.
• 26. A. Boztuğ, S. Basan, Characteization and synthesis of maleic anhydride-styrene-vinyl acetate terpolymer ester derivatives, J. Mater. Sci., 39 (2004) 6843.
• 27. H.B. Zengin, A. Boztuğ, S. Basan, Poly(hepten-1-alt. maleic anhydride)-hexamethylenediamine conjugate: synthesis and characterization of the thermal behaviour, J. Mater. Sci. Letter., 40 (2005) 4691.
• 28. H.B. Zengin, A. Boztuğ, S. Basan, Synthesis and comparative study of thermal stabilities of the imidization of some maleic anhydride copolymers, J. Appl. Polym. Sci., 101 (2006) 2250.
• 29. A. Boztuğ, S. Basan, Thermal characterization of n-alkyl maleate-styrene-allyl propionate terpolymers, J. Appl. Polym. Sci., 103 (2007) 600.
• 30. A. Boztuğ, S. Basan, The modification and characterization of maleic anhydrite –styrene-methyl methacrylate terpolymers by poly(ethylene adipate), J. Mol. Structure, 830 (2007) 126.