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The role of oleate-functionalized layered double hydroxide in the melt compounding of polypropylene nanocomposites
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SYSNO ASEP 0380812 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The role of oleate-functionalized layered double hydroxide in the melt compounding of polypropylene nanocomposites Tvůrce(i) Donato, R. K. (BR)
Luza, L. (BR)
da Silva, R. F. (BR)
Moro, C. C. (BR)
Guzatto, R. (BR)
Samios, D. (BR)
Matějka, Libor (UMCH-V) RID
Dimzoski, Bojan (UMCH-V)
Amico, S. C. (BR)
Schrekker, H. S. (BR)Zdroj.dok. Materials Science & Engineering C-Materials for Biological Applications. - : Elsevier - ISSN 0928-4931
Roč. 32, č. 8 (2012), s. 2396-2403Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova renewable feedstock functionalized nanofiller ; polymer-matrix nanocomposite ; melt compounding Vědní obor RIV CD - Makromolekulární chemie CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000310396900039 DOI 10.1016/j.msec.2012.07.013 Anotace In this research, the oleate-functionalized magnesium and aluminum layered double hydroxide (LDH; Mg: Al=3:1) o-LDH was applied as nanofiller in the melt blending of polypropylene (PP) nanocomposites, in order to understand its role in this process. o-LDH was prepared using the memory effect of the calcined carbonated LDH. Blending of PP and low o-LDH filler contents of 0.45 and 0.90 wt. % afforded the nanocomposites PP0.45 and PP0.90, respectively, which were characterized by transmission electron microscopy, X-ray diffraction, small angle X-ray scattering, thermo-gravimetric analysis, differential scanning calorimetry and dynamic mechanical analysis. The oleate LDH surface functionalization enhanced the system compatibility as a relative regular dispersion of o-LDH tactoids was observed within the matrix, together with partial PP intercalation. This o-LDH incorporation increased the PP relative crystallinity, induced crystalline orientation and decreased the glass transition temperature. Furthermore, the nanocomposites showed improved initial resistance to decomposition and stiffness. These results showed that the o-LDH acted as both nucleating agent and plasticizer, and that the presented approach can be used for the development of PP nanocomposites with distinguished properties. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2013
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