Radical grafting of maleic anhydride onto polypropylene via reactive extrusion

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU116777" target="_blank" >RIV/00216305:26310/15:PU116777 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Radical grafting of maleic anhydride onto polypropylene via reactive extrusion
Original language description
This work contributes to extension of the knowledge in the field of chemical modification of polypropylene carried out using reactive extrusion. The grafting reaction is affected by many parameters, such as concentration of initiators, monomers or stabilizers. The first part is focused on stabilizers function during grafting reaction. Considerable decrease in grafting yield of maleic anhydride (MAH) was observed at concentration of primary stabilizers higher than its induction period. Two radical initiators containing the different amount of peroxide groups (the commonly used Luperox 101 and the new Trigonox 301) were employed and compared. The yield of the PP-g-MAH was determined by means acid-base titration and FT-IR spectroscopy. The grafting reactions are accompanied by ?-scission of backbone irrespective of the nature and concentration of peroxide and monomers. The degree of degradation was measured by melt-flow rate (MFR). The slight changes in melting temperature and crystallini
Czech name
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Czech description
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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