Počet záznamů: 1
Nucleation of isotactic polypropylene crystallization by gold nanoparticles
- 1.
SYSNO ASEP 0338149 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Nucleation of isotactic polypropylene crystallization by gold nanoparticles Tvůrce(i) Masirek, R. (PL)
Szkudlarek, E. (PL)
Piorkowska, E. (PL)
Šlouf, Miroslav (UMCH-V) RID, ORCID
Kratochvíl, Jaroslav (UMCH-V) RID
Baldrian, Josef (UMCH-V)Zdroj.dok. Journal of Polymer Science. Part B, Polymer Physics . - : Wiley - ISSN 0887-6266
Roč. 48, č. 4 (2010), s. 469-478Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova crystallization ; isotactic polypropylene ; nanoparticles Vědní obor RIV CD - Makromolekulární chemie CEP KAN200520704 GA AV ČR - Akademie věd CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000274751200010 DOI 10.1002/polb.21908 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2010
Počet záznamů: 1