MODELING OF TERPOLYMERIZATION KINETICS AND DETERMINATION OF REACTIVITY RATIOS IN THE TDMA–STYRENE–MALEIC ANHYDRIDE SYSTEM

Authors

• Shohrux Boboxon ugli Mavlonov, Bukhara State Technical University, Bukhara region, Republic of UzbekistanFollow
• Sadriddin Fayzullayevich Fozilov, Bukhara State Technical University, Bukhara region, Republic of UzbekistanFollow

Abstract

In this study, the kinetics of terpolymerization, compositional evolution, and monomer reactivity ratios in the TDMA–styrene–maleic anhydride system were comprehensively investigated. Increasing the initiator concentration from 16.8×10⁻⁶ to 51.3×10⁻⁶ mol•L⁻¹ led to an increase in conversion from 6.4% to 15.2% and reaction rate from 4.075×10⁻⁶ to 8.965×10⁻⁶ mol•L⁻¹•s⁻¹. At low conversion (Xw≈0.02–0.09), the terpolymer composition remained close to the initial feed, although deviations due to differences in monomer reactivity were observed. With increasing conversion, some systems exhibited stable composition (±0.02), while others showed compositional drift (increase of MA fraction from 0.50 to 0.70). The determined reactivity ratios (rTDMA/St≈0.99; rSt/TDMA≈1.62; rTDMA/MA≈2.02; rMA/TDMA≈0.34; rSt/MA≈1.50; rMA/St≈0.32) indicate the dominant incorporation of TDMA and styrene and selective incorporation of MA. The ternary kinetic model demonstrated high agreement with experimental data (±0.03).

First Page

5

Last Page

13

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Recommended Citation

Mavlonov, Shohrux Boboxon ugli and Fozilov, Sadriddin Fayzullayevich (2026) "MODELING OF TERPOLYMERIZATION KINETICS AND DETERMINATION OF REACTIVITY RATIOS IN THE TDMA–STYRENE–MALEIC ANHYDRIDE SYSTEM," Technical science and innovation: Vol. 2026: Iss. 2, Article 7.
Available at: https://btstu.researchcommons.org/journal/vol2026/iss2/7