Joint effects of long-chain branching and specific nucleation on morphology and thermal properties of polypropylene blends

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F20%3A63526151" target="_blank" >RIV/70883521:28110/20:63526151 - isvavai.cz</a>
Result on the web
<a href="https://www.expresspolymlett.com/letolt.php?file=EPL-0010572&mi=c" target="_blank" >https://www.expresspolymlett.com/letolt.php?file=EPL-0010572&mi=c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3144/expresspolymlett.2020.77" target="_blank" >10.3144/expresspolymlett.2020.77</a>

Result language
angličtina
Original language name
Joint effects of long-chain branching and specific nucleation on morphology and thermal properties of polypropylene blends
Original language description
The influence of long-chain branching and specific β-nucleation on polymorphic composition, melting and crystallization, and morphology of polypropylene blends were investigated by wide-angle X-ray scattering, differential scanning calorimetry, and scanning electron microscopy. Linear polypropylene and long-chain branched polypropylene were used for the preparation of blends in various proportions. N,N′-dicyclohexylnaphthalene-2,6-dicarboxamide was introduced (0 or 0.03 wt%) as a β-specific nucleating agent into prepared blends. It was found that LCB-PP strongly induces γ-phase formation in the blends and suppresses the nucleation activity of a β-specific nucleating agent. Blends containing a predominant amount of α-and γ-phases showed higher thermodynamic stability within melting, as compared to the samples rich in β-phase. During crystallization, LCB-PP in the blends increases nucleation density by self-seeding effect, manifesting itself in the shift of crystallization temperature. β-phase in the blends is distinctly separated in spherulites, while α-and γ-phases coexist on the lamellae level.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10404 - Polymer science

Project
<a href="/en/project/EF16_027%2F0008464" target="_blank" >EF16_027/0008464: International mobility of UTB researchers in Zlín</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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