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Monitoring of morphology and properties during preparation of PCL/PLA microfibrillar composites with organophilic montmorillonite

SYSNO ASEP	0525258
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Monitoring of morphology and properties during preparation of PCL/PLA microfibrillar composites with organophilic montmorillonite
Author(s)	Šlouf, Miroslav (UMCH-V)_{RID, ORCID} Ujčić, Aleksanda (UMCH-V)_{RID, ORCID} Nevoralová, Martina (UMCH-V)_{RID, ORCID} Vacková, Taťana (UMCH-V)_RID Fambri, L. (IT) Kelnar, Ivan (UMCH-V)_{RID, ORCID}
Article number	188
Source Title	Frontiers in Materials. - : Frontiers Media - ISSN 2296-8016 Roč. 7, 25 June (2020), s. 1-16
Number of pages	16 s.
Language	eng - English
Country	CH - Switzerland
Keywords	biodegradable microfibrillar composites ; polycaprolactone ; poly(lactic acid)
Subject RIV	CD - Macromolecular Chemistry
OECD category	Polymer science
R&D Projects	TN01000008 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
	TE01020118 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
	GA19-06065S GA ČR - Czech Science Foundation (CSF)
	LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	UMCH-V - RVO:61389013
UT WOS	000549174800001
EID SCOPUS	85087740560
DOI	10.3389/fmats.2020.00188
Annotation	Biodegradable microfibrillar composites PCL/PLA/C15, where PCL is poly(ε-caprolactone), PLA is poly(lactic acid), and C15 is organophilic montmorillonite, have been prepared. Microindentation hardness testing was employed in monitoring the gradual improvement of PCL stiffness due to PLA addition, C15 addition, flow-induced orientation, and changing crystallinity throughout the whole preparation process. Neat PCL after extrusion and injection molding was quite soft, but the stiffness of the material increased after melt-blending with 20 wt.% of PLA, after the addition of 2 wt.% of C15, and after the preparation of the final microfibrillar composite. The indentation modulus and indentation hardness of all intermediate products and the final PCL/PLA/C15 microfibrillar composite were associated not only with the composition and morphology but also with the crystallinity of both components. The modulus of the final PCL/PLA/C15 composite was almost two times higher in comparison with the original PCL matrix.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2021
Electronic address	https://www.frontiersin.org/articles/10.3389/fmats.2020.00188/full

Number of the records: 1