Počet záznamů: 1

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

SYSNO ASEP	0480894
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	A novel insight into the origin of toughness in polypropylene-calcium carbonate microcomposites: multivariate analysis of ss-NMR spectra
Tvůrce(i)	Kukačková, Olivia (UMCH-V)_RID Nguyen, Viet Dung (UMCH-V) Abbrent, Sabina (UMCH-V)_{RID, ORCID} Urbanová, Martina (UMCH-V)_{RID, ORCID} Kotek, Jiří (UMCH-V)_RID Brus, Jiří (UMCH-V)_{RID, ORCID}
Zdroj.dok.	Polymer. - : Elsevier - ISSN 0032-3861 Roč. 132, 6 December (2017), s. 106-113
Poč.str.	8 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	isotactic polypropylene microcomposites ; CaCO3 ; toughness
Vědní obor RIV	CD - Makromolekulární chemie
Obor OECD	Polymer science
CEP	GA16-04109S GA ČR - Grantová agentura ČR
	LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	UMCH-V - RVO:61389013
UT WOS	000416042500012
EID SCOPUS	85032686525
DOI	10.1016/j.polymer.2017.10.071
Anotace	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.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2018

Počet záznamů: 1