Compatibilizing effects of styrenic block copolymers in polypropylene/polystyrene blends /
Preučevali 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/...
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| Format: | Book Chapter |
| Jezik: | English |
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| Sorodne knjige/članki: | Vsebovano v:
Acta chimica slovenica |
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| LEADER | 02987naa a2200205 ib4500 | ||
|---|---|---|---|
| 001 | 3310876 | ||
| 003 | SI-MaCOB | ||
| 005 | 19970528000000.0 | ||
| 008 | 970527s1997 xv |||||||||||||| ||eng c | ||
| 040 | |a EPF |b slv |c SI-MaIIZ |d EPF |e ppiak | ||
| 080 | |a 678 | ||
| 100 | 1 | |a Radonjič, Gregor. |4 aut | |
| 245 | 0 | 0 | |a Compatibilizing effects of styrenic block copolymers in polypropylene/polystyrene blends / |c Gregor Radonjič, Vojko Musil, Matjaž Makarovič. |
| 300 | |a str. 29-44. | ||
| 520 | |a Preučevali 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. | ||
| 520 | |a Morphology and mechanical properties of immiscible polymer blends of isotactic polypropylene (PP) and atactic polystyrene (PS) have been investigated. The effect of the addition of poly(styrene-b-butadiene-b-styrene) (SBS) and poly(styrene-b-ethylene-co-propylene) (SEP) on changes of morphology and mechanical properties of PP/PS blends has also been studied. Binary and ternary blends with different weight ratios of PP and PS were prepared in the melt in Brabender kneading chamber. Scanning electron microscopy was used for the determination of the blends morphologies. Notched impact strength, Young's modulus, yield stress and elongation at yield were measured. An obvious decrease in dispersed particle dimensions of PS is observed with the addition of only 5wt.% of block copolymers SBS and SEP. Mechanical properties were affected because of the morphological changes. Notched impact strength and elongation at yield were substantially improved. Some theoretical models showed to be adequate to predict the values of Young's modulus and yield stress of such binary PP/PS blends. | ||
| 653 | 0 | |a polimeri |a polimerne mešanice |a polipropilen |a polistiren |a mehanske lastnosti |a morfologija |a kemija | |
| 700 | 1 | 2 | |a Musil, Vojko. |4 aut |
| 700 | 1 | 2 | |a Makarovič, Matjaž. |4 aut |
| 773 | 0 | |t Acta chimica slovenica |b [Tiskana izd.] |d Ljubljana : Slovensko kemijsko društvo =Slovenian Chemical Society, 1993- |x 1318-0207 |g 44, 1 (1997), str. 29-44 | |