Radical grafting of maleic anhydride onto polypropylene via reactive extrusion

Kód výsledku v 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>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Radical grafting of maleic anhydride onto polypropylene via reactive extrusion

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Radical grafting of maleic anhydride onto polypropylene via reactive extrusion

Popis výsledku anglicky

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

Druh

O - Ostatní výsledky

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů