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Description
| - The paper deals with the effects of nucleation on photodegradation of isotactic polypropylene. The starting polymer was modified by a specific α-nucleating/clarifying agent Millad 3988 based on 1,3;2,4-bis(3,4- dimethylbenzylidene) sorbitol. Several concentrations were applied. Samples prepared by compression moulding were then exposed to UV-irradiation. Infrared spectroscopy showed that the degradation kinetics is similar for all the samples. Melting and crystallization behaviour of irradiated samples was followed using a differential scanning calorimetry. In all cases UV-irradiation led to decrease of melting/crystallization temperature as a result of polymer degradation. The surface cracking was observed using polarized light microscopy. The network of the surface cracking was significantly different for neat and nucleated samples.
- The paper deals with the effects of nucleation on photodegradation of isotactic polypropylene. The starting polymer was modified by a specific α-nucleating/clarifying agent Millad 3988 based on 1,3;2,4-bis(3,4- dimethylbenzylidene) sorbitol. Several concentrations were applied. Samples prepared by compression moulding were then exposed to UV-irradiation. Infrared spectroscopy showed that the degradation kinetics is similar for all the samples. Melting and crystallization behaviour of irradiated samples was followed using a differential scanning calorimetry. In all cases UV-irradiation led to decrease of melting/crystallization temperature as a result of polymer degradation. The surface cracking was observed using polarized light microscopy. The network of the surface cracking was significantly different for neat and nucleated samples. (en)
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Title
| - Photodegradation of Polypropylene with sorbitol-based nucleating agent
- Photodegradation of Polypropylene with sorbitol-based nucleating agent (en)
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skos:prefLabel
| - Photodegradation of Polypropylene with sorbitol-based nucleating agent
- Photodegradation of Polypropylene with sorbitol-based nucleating agent (en)
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skos:notation
| - RIV/70883521:28110/10:63509304!RIV11-MSM-28110___
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http://linked.open...avai/riv/aktivita
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| - RIV/70883521:28110/10:63509304
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| - polypropylene; nucleating agent; sorbitol; photodegradation; polymorphis (en)
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http://linked.open.../riv/klicoveSlovo
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| - Latest Trends on Engineering Mechanics, Structures, Engineering Geology
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| - Navrátilová, Jana
- Čermák, Roman
- Vašek, Leoš
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