Joint effects of long-chain branching and specific nucleation on morphology and thermal properties of polypropylene blends

Gajzlerová, Lenka; Navrátilová, Jana; Ryzí, Adriana; Slaběňáková, Tereza; Čermák, Roman

dc.title	Joint effects of long-chain branching and specific nucleation on morphology and thermal properties of polypropylene blends	en
dc.contributor.author	Gajzlerová, Lenka
dc.contributor.author	Navrátilová, Jana
dc.contributor.author	Ryzí, Adriana
dc.contributor.author	Slaběňáková, Tereza
dc.contributor.author	Čermák, Roman
dc.relation.ispartof	Express Polymer Letters
dc.identifier.issn	1788-618X Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued	2020
utb.relation.volume	14
utb.relation.issue	10
dc.citation.spage	952
dc.citation.epage	961
dc.type	article
dc.language.iso	en
dc.publisher	BME-PT and GTE
dc.identifier.doi	10.3144/expresspolymlett.2020.77
dc.relation.uri	https://www.expresspolymlett.com/letolt.php?file=EPL-0010572&mi=c
dc.subject	polymer blends and alloys	en
dc.subject	polypropylene	en
dc.subject	long-chain branching	en
dc.subject	specific nucleation	en
dc.subject	thermal properties	en
dc.description.abstract	The influence of long-chain branching and specific β-nucleation on polymorphic composition, melting and crystallization, and morphology of polypropylene blends were investigated by wide-angle X-ray scattering, differential scanning calorimetry, and scanning electron microscopy. Linear polypropylene and long-chain branched polypropylene were used for the preparation of blends in various proportions. N,N′-dicyclohexylnaphthalene-2,6-dicarboxamide was introduced (0 or 0.03 wt%) as a β-specific nucleating agent into prepared blends. It was found that LCB-PP strongly induces γ-phase formation in the blends and suppresses the nucleation activity of a β-specific nucleating agent. Blends containing a predominant amount of α-and γ-phases showed higher thermodynamic stability within melting, as compared to the samples rich in β-phase. During crystallization, LCB-PP in the blends increases nucleation density by self-seeding effect, manifesting itself in the shift of crystallization temperature. β-phase in the blends is distinctly separated in spherulites, while α-and γ-phases coexist on the lamellae level. © 2020, BME-PT and GTE. All rights reserved.	en
utb.faculty	Faculty of Technology
dc.identifier.uri	http://hdl.handle.net/10563/1009833
utb.identifier.obdid	43881626
utb.identifier.scopus	2-s2.0-85088902742
utb.identifier.wok	000566773200005
utb.source	j-scopus
dc.date.accessioned	2020-08-13T13:10:36Z
dc.date.available	2020-08-13T13:10:36Z
dc.description.sponsorship	Operational Program for Research, Development, and Education; European UnionEuropean Union (EU) [CZ.02.2.69/0.0/0.0/16_027/0008464]; [IGA/CPS/2018/006]; [IGA/CPS/2019/002]
utb.contributor.internalauthor	Gajzlerová, Lenka
utb.contributor.internalauthor	Navrátilová, Jana
utb.contributor.internalauthor	Ryzí, Adriana
utb.contributor.internalauthor	Slaběňáková, Tereza
utb.contributor.internalauthor	Čermák, Roman
utb.fulltext.affiliation	L. Gajzlerova, J. Navratilova, A. Ryzi, T. Slabenakova, R. Cermak Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, 760 01 Zlin, Czech Republic Corresponding author, e-mail: lgajzlerova@utb.cz
utb.fulltext.dates	Received 6 January 2020; accepted in revised form 22 March 2020
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utb.fulltext.sponsorship	This article was written with the support of Operational Program for Research, Development, and Education, co-funded by the European Union, within the framework of the project ‘International Mobility of Researchers of TBU in Zlín’ (Reg. number: CZ.02.2.69/0.0/0.0/16_027/0008464) and by the internal grant agency of the projects IGA/CPS/2018/006 and IGA/CPS/2019/002. The authors kindly acknowledge to Jirina Dohnalova for her help with sample preparation and testing.
utb.wos.affiliation	[Gajzlerova, L.; Navratilova, J.; Ryzi, A.; Slabenakova, T.; Cermak, R.] Tomas Bata Univ Zlin, Fac Technol, Vavreckova 275, Zlin 76001, Czech Republic
utb.scopus.affiliation	Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, Zlin, 760 01, Czech Republic
utb.fulltext.projects	CZ.02.2.69/0.0/0.0/16_027/0008464
utb.fulltext.projects	IGA/CPS/2018/006
utb.fulltext.projects	IGA/CPS/2019/002