Tailoring end-use properties of polypropylene through a combination of specific nucleation and long-chain branching

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F25%3A63598639" target="_blank" >RIV/70883521:28110/25:63598639 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10118-024-3234-1" target="_blank" >https://link.springer.com/article/10.1007/s10118-024-3234-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10118-024-3234-1" target="_blank" >10.1007/s10118-024-3234-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tailoring end-use properties of polypropylene through a combination of specific nucleation and long-chain branching

Popis výsledku v původním jazyce

The present study presents an assessment of the interrelations between long-chain branching, specific nucleation, and end-use properties of polypropylene blends: blends of linear polypropylene (L-PP) and long-chain branched polypropylene (LCB-PP) modified by a specific β-nucleating agent (NA). Specimens with various LCB-PP compositions with and without NA were prepared under complex flow fields by injection molding. Wide-angle X-ray scattering was employed to capture the X-ray patterns of both the skin and core of the specimens, determining the overall crystallinity and amounts of individual polymorphs. The increasing content of LCB-PP and γ-phase, at the same time, in the blends is reflected in both increasing crystallinity and improved mechanical properties, namely, yield stress and Young’s modulus. On the other hand, the composition of the blends had no significant effect on the impact strength, except for nucleated L-PP. It has been demonstrated that adding a relatively small amount of LCB-PP is sufficient to modify the mechanical properties of linear polypropylene. Even a very small amount of LCB-PP in the L-PP suppressed the effectiveness of NA.

Název v anglickém jazyce

Tailoring end-use properties of polypropylene through a combination of specific nucleation and long-chain branching

Popis výsledku anglicky

The present study presents an assessment of the interrelations between long-chain branching, specific nucleation, and end-use properties of polypropylene blends: blends of linear polypropylene (L-PP) and long-chain branched polypropylene (LCB-PP) modified by a specific β-nucleating agent (NA). Specimens with various LCB-PP compositions with and without NA were prepared under complex flow fields by injection molding. Wide-angle X-ray scattering was employed to capture the X-ray patterns of both the skin and core of the specimens, determining the overall crystallinity and amounts of individual polymorphs. The increasing content of LCB-PP and γ-phase, at the same time, in the blends is reflected in both increasing crystallinity and improved mechanical properties, namely, yield stress and Young’s modulus. On the other hand, the composition of the blends had no significant effect on the impact strength, except for nucleated L-PP. It has been demonstrated that adding a relatively small amount of LCB-PP is sufficient to modify the mechanical properties of linear polypropylene. Even a very small amount of LCB-PP in the L-PP suppressed the effectiveness of NA.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chinese Journal of Polymer Science (English Edition)

ISSN

0256-7679

e-ISSN

1439-6203

Svazek periodika

43

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

101-109

Kód UT WoS článku

001350460900006

EID výsledku v databázi Scopus

2-s2.0-85208782184