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| rdf:type
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| Description
| - As a member of the group of heterophase polymers, the high-impact polypropylene (hiPP) consists of two immiscible phases - of porous crystalline matrix (made from isotactic polypropylene = iPP) and of soft rubbery domains (made from ethylene-propylene random copolymer = EPR) built in the pores of the iPP matrix. In such material the hardness of crystalline iPP is supplemented with the impact toughness due to a good dispersion of EPR domains with suitable sizes. The mapping of the hiPP morphology and its evolution during the polymerization process is crucial for understanding how various manufacturing factors influence the hiPP morphology. The distribution and sizes of pores within the iPP particles (and subsequent EPR distribution within hiPP particles) are determined by type of Ziegler-Natta (Z N) catalyst and by reaction conditions. In this contribution we discuss the differences between iPP and hiPP samples grown on different Z N catalysts. Also EPR content and EPR composition are proven to be the factors affecting hiPP morphology as further shown in this work. In this work the morphology of hiPP particles was mapped by two methods. The X Ray micro-tomography (?-CT) is a non-destructive technique allowing imaging of the whole particle internal structure. However, the resolution of the X Ray ?-CT is limited to 1 ?m. The other method, Atomic Force Microscopy (AFM), has almost atomic resolution but the maximal size of the scanned area is (100x100) ?m2. The combination of both these imaging techniques offers the complete view on the hiPP morphology. The scanned morphology (including EPR domains size and distribution characterization) was processed by suitable morphological descriptors such as (i) distance transform, (ii) lineal path distribution that are able to quantitatively describe anisotropic morphology with percolated phases.
- As a member of the group of heterophase polymers, the high-impact polypropylene (hiPP) consists of two immiscible phases - of porous crystalline matrix (made from isotactic polypropylene = iPP) and of soft rubbery domains (made from ethylene-propylene random copolymer = EPR) built in the pores of the iPP matrix. In such material the hardness of crystalline iPP is supplemented with the impact toughness due to a good dispersion of EPR domains with suitable sizes. The mapping of the hiPP morphology and its evolution during the polymerization process is crucial for understanding how various manufacturing factors influence the hiPP morphology. The distribution and sizes of pores within the iPP particles (and subsequent EPR distribution within hiPP particles) are determined by type of Ziegler-Natta (Z N) catalyst and by reaction conditions. In this contribution we discuss the differences between iPP and hiPP samples grown on different Z N catalysts. Also EPR content and EPR composition are proven to be the factors affecting hiPP morphology as further shown in this work. In this work the morphology of hiPP particles was mapped by two methods. The X Ray micro-tomography (?-CT) is a non-destructive technique allowing imaging of the whole particle internal structure. However, the resolution of the X Ray ?-CT is limited to 1 ?m. The other method, Atomic Force Microscopy (AFM), has almost atomic resolution but the maximal size of the scanned area is (100x100) ?m2. The combination of both these imaging techniques offers the complete view on the hiPP morphology. The scanned morphology (including EPR domains size and distribution characterization) was processed by suitable morphological descriptors such as (i) distance transform, (ii) lineal path distribution that are able to quantitatively describe anisotropic morphology with percolated phases. (en)
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| Title
| - Mapping and control of the high-impact polypropylene morphology
- Mapping and control of the high-impact polypropylene morphology (en)
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| skos:prefLabel
| - Mapping and control of the high-impact polypropylene morphology
- Mapping and control of the high-impact polypropylene morphology (en)
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| skos:notation
| - RIV/60461373:22340/12:43893901!RIV13-MSM-22340___
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22340/12:43893901
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - statistical descriptors; X-Ray microCT; AFM; morphology; Heterophase polymers (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - 20th International Congress of Chemical and Process Engineering
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Gregor, Tomáš
- Kosek, Juraj
- Smolná, Klára
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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| is http://linked.open...avai/riv/vysledek
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