Počet záznamů: 1
Relations between morphology and micromechanical properties of alpha, beta and gamma phases of iPP
- 1.
SYSNO ASEP 0488784 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Relations between morphology and micromechanical properties of alpha, beta and gamma phases of iPP Tvůrce(i) Šlouf, Miroslav (UMCH-V) RID, ORCID
Pavlova, Ewa (UMCH-V) RID
Krejčíková, Sabina (UMCH-V)
Ostafinska, Aleksandra (UMCH-V) RID, ORCID
Zhigunov, Alexander (UMCH-V) RID, ORCID
Krzyžánek, Vladislav (UPT-D) RID, ORCID, SAI
Sowinski, P. (PL)
Piorkowska, E. (PL)Zdroj.dok. Polymer Testing. - : Elsevier - ISSN 0142-9418
Roč. 67, May (2018), s. 522-532Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova polypropylene ; gamma-phase ; micromechanical properties Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science Vědní obor RIV – spolupráce Ústav přístrojové techniky - Elektronika a optoelektronika, elektrotechnika CEP NV15-31269A GA MZd - Ministerstvo zdravotnictví TE01020118 GA TA ČR - Technologická agentura ČR LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UMCH-V - RVO:61389013 ; UPT-D - RVO:68081731 UT WOS 000432644900062 EID SCOPUS 85044586277 DOI 10.1016/j.polymertesting.2018.03.039 Anotace The relations between crystalline structure and micromechanical properties of alpha-, beta- and gamma-phase of isotactic polypropylene (iPP) were investigated. The iPP samples with various crystalline phase compositions were prepared by a controlled high-pressure crystallization that enabled us to obtain not only alpha-iPP and beta-iPP modifications, but also a series of almost pure gamma-iPP samples with gradually changing morphology, crystallinity and lamellar thickness. The micromechanical properties were assessed by instrumented microindentation hardness testing (MHI), from which we determined indentation hardness (HIT), indentation modulus (EIT), indentation creep (CIT) and elastic part of the indentation work (ηIT). It was demonstrated that gamma-iPP does not necessarily exhibit better mechanical performance than alpha- and beta-iPP, as suggested by some previous studies, because the final properties are strongly influenced not only by the phase composition (i.e. by the content of alpha-, beta- and gamma-phase), but also by the overall crystallinity. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2019
Počet záznamů: 1