Ekonomsko-poslovna fakulteta, Maribor (EPF)
POSLOVALNI ČAS/ IZPOSOJA NA DOM: Ponedeljek, Sreda, Petek 8.30 - 14.00. Torek, Četrtek 8.30 - 17.00. ČITALNICA: Ponedeljek, Torek, Sreda, Četrtek 8.30 - 17.00, Petek 8.30 - 14.00. Poletni poslovalni čas (julij-avgust) / Knjižnica in čitalnica: torek in četrtek 9.00 - 14.00.
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The use of ethylene/propylene copolymers as compatibilizers for recycled polyolefin blendsRadonjič, Gregor ; Gubeljak, NenadCompatibilizing effects of ethylene\propylene (EPR) diblock copolymers on the morphology and mechanical properties of immiscible blends produced from recycled low-density polyethylene (PE-LD) and ... high-density polyethylene (PE-HD) with 20 wt.-% of recycled poly (propylene) (PP) were investigated. Two different EPR block copolymers which differ in ethylene monomer unit content were applied to act as interfacial agents. The morphology of the studied blends was observed by scanning (SEM) and transmission electron microscopy (TEM). It was found that both EPR copolymers were efficient in reducing the size of the dispersed phase and improving adhesion between PE and PP phases. Addition of 10 wt.-% of EPR caused the formation of inferfacial layer surroundig dispersed PP particles with the occurence of PE-LD lamelle interpenetration into the layer. Tensile properties (elongation at yield, yield stress, elongation at break. Young's modulus) and notched impact strength were measured as a function of blend composition and chemical structure of EPR. It was found that the EPR with a higher content of ethylene monomer untis was a more efficient compatibilizer, especially for the modification of PE-LD\PP 80\20 blend. Notched impact strength and ductility were greatly improved due to the morphological changes and increased interfacial adhesion as result of the EPR localization between the phases. No significant improvements of mechanical properties for recycled PE-HD\PP 80\20 blend were observed by the addition of selected block copolymers.Vir: Macromolecular materials and engineering. - ISSN 1438-7492 (Vol.287, No. 2, 2002, str. 122-132)Vrsta gradiva - članek, sestavni delLeto - 2002Jezik - angleškiCOBISS.SI-ID - 6174748
Avtor
Radonjič, Gregor |
Gubeljak, Nenad
Teme
morfologija |
kompatibilnost |
recikliranje |
etilen |
propilen |
kopolimeri |
mešanice
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vir: Macromolecular materials and engineering. - ISSN 1438-7492 (Vol.287, No. 2, 2002, str. 122-132)
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Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Radonjič, Gregor | 11244 |
Gubeljak, Nenad | 10470 |
Vir: Osebne bibliografije
in: SICRIS
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