A novel insight into the origin of toughness in polypropylene-calcium carbonate microcomposites: multivariate analysis of ss-NMR spectra

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00480894" target="_blank" >RIV/61389013:_____/17:00480894 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.polymer.2017.10.071" target="_blank" >http://dx.doi.org/10.1016/j.polymer.2017.10.071</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2017.10.071" target="_blank" >10.1016/j.polymer.2017.10.071</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A novel insight into the origin of toughness in polypropylene-calcium carbonate microcomposites: multivariate analysis of ss-NMR spectra

Popis výsledku v původním jazyce

Interface has been long time recognized as crucial for changing and optimizing mechanical properties of polymer composites and nanocomposites. Spectroscopic identification of this interface, however, remains a great challenge. This study combining solid-state 13C NMR spectroscopy with a principal component analysis (PCA) proposes a novel strategy to explore the role of interfacial area at vicinity of filler particles on toughness of polymer composites. Samples of commercial-grade isotactic polypropylene (PP), both neat and modified with various types of calcium carbonate (CaCO3) microparticles, were subjected to a combination of fracture mechanical testing and solid-state NMR analysis. Temperature-induced transformation between the free and constrained amorphous phases was monitored using the factor analysis of 13C MAS NMR spectra. The three-dimensional correlation plots clearly separated the prepared PP/CaCO3 microcomposites into the well-defined clusters, allowing the systems with differing quantities of partially ordered amorphous domains to be identified. These differences perfectly correlated with the toughness of the prepared composites. The results thus confirmed that the changes in the toughness of the microcomposites are closely related to the increased formation of the partially ordered trans-crystalline fraction of PP chains.

Název v anglickém jazyce

A novel insight into the origin of toughness in polypropylene-calcium carbonate microcomposites: multivariate analysis of ss-NMR spectra

Popis výsledku anglicky

Interface has been long time recognized as crucial for changing and optimizing mechanical properties of polymer composites and nanocomposites. Spectroscopic identification of this interface, however, remains a great challenge. This study combining solid-state 13C NMR spectroscopy with a principal component analysis (PCA) proposes a novel strategy to explore the role of interfacial area at vicinity of filler particles on toughness of polymer composites. Samples of commercial-grade isotactic polypropylene (PP), both neat and modified with various types of calcium carbonate (CaCO3) microparticles, were subjected to a combination of fracture mechanical testing and solid-state NMR analysis. Temperature-induced transformation between the free and constrained amorphous phases was monitored using the factor analysis of 13C MAS NMR spectra. The three-dimensional correlation plots clearly separated the prepared PP/CaCO3 microcomposites into the well-defined clusters, allowing the systems with differing quantities of partially ordered amorphous domains to be identified. These differences perfectly correlated with the toughness of the prepared composites. The results thus confirmed that the changes in the toughness of the microcomposites are closely related to the increased formation of the partially ordered trans-crystalline fraction of PP chains.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

—

Svazek periodika

132

Číslo periodika v rámci svazku

6 December

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

106-113

Kód UT WoS článku

000416042500012

EID výsledku v databázi Scopus

2-s2.0-85032686525