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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Polymer

ISSN

0032-3861

e-ISSN

—

Volume of the periodical

132

Issue of the periodical within the volume

6 December

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

106-113

UT code for WoS article

000416042500012

EID of the result in the Scopus database

2-s2.0-85032686525