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Mechanical and rheological properties of silica-reinforced polypropylene/m-EPR blends (CROSBI ID 230451)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Pustak, Anđela ; Denac, Matjaž ; Sever Škapin, Andrijana ; Švab, Iztok ; Musil, Vojko ; Šmit, Ivan Mechanical and rheological properties of silica-reinforced polypropylene/m-EPR blends // Journal of polymer research, 23 (2016), 8; 163:1-13. doi: 10.1007/s10965-016-1062-x

Podaci o odgovornosti

Pustak, Anđela ; Denac, Matjaž ; Sever Škapin, Andrijana ; Švab, Iztok ; Musil, Vojko ; Šmit, Ivan

engleski

Mechanical and rheological properties of silica-reinforced polypropylene/m-EPR blends

Rheological and mechanical properties (tensile and impact properties) as well as the mechanical profiles of ternary isotactic polypropylene/silica/elastomer (iPP/SiO2/m-EPR metallocene catalyzed ethylene-propylene rubber) composites were investigated and discussed. The effects of two metallocene ethylene-propylene-based elastomers (m-EPR) differing in molecular weight/viscosity and their content on iPP/silica composites with different silica types differing in size (nano- vs. micro-) and surface properties (untreated vs. treated) were investigated. The two m-EPR elastomers were added to iPP/SiO2 96/4 composites as possible impact modifier and compatibilizer at the same time in 5, 10, 15, and 20 vol% per hundred volume parts of composites. The effects of different silica fillers and two m-EPR rubbers were discussed within the context of structure-morphology-mechanical property relationships of these iPP/SiO2/m-EPR composites. Tensile and impact strength properties were mainly influenced by combined competetive effects of stiff filler and tough m-EPR elastomer so sinergistic effect was also observed. The ductility of these composites was affected additionally by spherulite size of the iPP matrix due to the difference in nucleation abilities of silica fillers enabled by prevailing separated morphology observed in iPP/SiO2/m-EPR composites.

polypropylene composites ; mechanical properties ; structure-property relationships

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Podaci o izdanju

23 (8)

2016.

163:1-13

objavljeno

1022-9760

10.1007/s10965-016-1062-x

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Kemija

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