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Nucleation of isotactic polypropylene crystallization by gold nanoparticles
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SYSNO ASEP 0338149 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nucleation of isotactic polypropylene crystallization by gold nanoparticles Author(s) Masirek, R. (PL)
Szkudlarek, E. (PL)
Piorkowska, E. (PL)
Šlouf, Miroslav (UMCH-V) RID, ORCID
Kratochvíl, Jaroslav (UMCH-V) RID
Baldrian, Josef (UMCH-V)Source Title Journal of Polymer Science. Part B, Polymer Physics . - : Wiley - ISSN 0887-6266
Roč. 48, č. 4 (2010), s. 469-478Number of pages 10 s. Language eng - English Country US - United States Keywords crystallization ; isotactic polypropylene ; nanoparticles Subject RIV CD - Macromolecular Chemistry R&D Projects KAN200520704 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000274751200010 DOI 10.1002/polb.21908 Annotation Nucleation of isotactic polypropylene (iPP) crystallization by gold (Au) nanoparticles was studied. Regardless of their size, 4.3, 8.8, 28.3, and 84.5 nm, all particles were able to nucleate spherulites when deposited on the iPP surface. However, when added and melt-mixed with iPP, only the smallest particles affected significantly the iPP bulk crystallization. Au nanoparticles larger than 4.3 nm, at the concentration of 0.001 wt %, did not influence the crystallization of iPP. Contrary to this, 0.001 and 0.005 wt % of Au nanoparticles having the size of 4.3 nm increased crystallization temperature of the iPP by 7-8 °C and decreased markedly the sizes of polycrystalline aggregates. Aggregation of Au nanoparticles in the polymer matrix was evidenced by electron microscopy and contributed to their decreased effectiveness in the nucleation of iPP crystallization. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2010
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