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Compatibilizing effects of styrenic block copolymers in polypropylene/polystyrene blendsRadonjič, Gregor ; Musil, Vojko ; Makarovič, MatjažPreučevali smo morfologijo in mehanske lastnosti nemešljive polimerne mešanice polipropilena (PP) s polistirenom (PS) ter kompatibilizacijske učinke ob dodatku poli(stiren-b-etilen-co-propilena) ... (SEP) oziroma poli(stiren-b-butadien-b-stirena) (SBS) na spremembo morfologije in mehanskih lastnosti PP/PS mešanic. Binarne in ternarne mešanice z različnimi masnimi razmerji PP in PS smo pripravili v Brabenderjevem gnetilniku. Z vrstičnim elektronskim mikroskopom smo preučevali morfologijo polimernih mešanic. Izmed mehanskih lastnosti smo določevali zarezno udarno žilavost, Youngov modul, mejo plastičnosti in raztezek na meji plastičnosti. Ugotovili smo znatno zmanjšanje premera delcev dispergiranega PS ob dodatku samo 5m.% blokkopolimerov SEP oziroma SBS. Zaradi sprememb morfologije je prišlo v nekaterih primerih do bistvenega izboljšanja zarezne udarne žilavosti in raztezka na meji plastičnosti. Nekateri teoretični modeli so se pokazali za primerne pri predvidevanju Youngovih modulov in meje plastičnosti binarnih PP/PS mešanic.Source: Acta chimica slovenica. - ISSN 1318-0207 (44, 1, 1997, str. 29-44)Type of material - article, component partPublish date - 1997Language - englishCOBISS.SI-ID - 3310876
Author
Radonjič, Gregor |
Musil, Vojko |
Makarovič, Matjaž
Topics
polimeri |
polimerne mešanice |
polipropilen |
polistiren |
mehanske lastnosti |
morfologija |
kemija
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Database name | Field | Year |
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Radonjič, Gregor | 11244 |
Musil, Vojko | 07545 |
Makarovič, Matjaž | 07270 |
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