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Technological optimization of a pilot line for production PP-g-IAH
 Arvai, Tomáš ; Petrůj, Jaroslav (referee) ; Kučera, František (advisor)
The bachelor thesis deals with optimization of a pilot line for production polypropylene grafted with itaconic anhydride. Theoretical part describes actual knowledge about radical grafting of polyolefins with emphasis on the variety of factors affecting melt grafting. Extruded mass per hour, torque and die pressure were measured during all extrusions within optimization. Two sets of samples were prepared in the co-rotating twin-screw extruder (Brabender 25 DSE L/D = 34). Sample set prepared at 200 °C ranged from 1:2 to 1:20 molar ratio of initiator/monomer, set prepared at 230 °C ranged from 1:4 to 1:20 molar ratio. Parameters set for all extrusions were 30 RPM, reaction time 3 minutes. All samples contained the same mass concentration of monomer 0.5 %, initiator selected 2,5-di(tert-butylperoxy)-2,5-dimethylhexane (Luperox 101). Degradation of samples was observed through MVR measurements, monomer content in extruded samples was analyzed by acid-base titration and FT-IR spectroscopy.
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