Nucleated crystallization of isotactic polypropylene in multilayered sandwich nanocomposites with gold particles

0377315 - ÚMCH 2013 RIV US eng J - Journal Article
Šlouf, Miroslav - Sikora, Antonín - Pavlova, Ewa - Vlková, Helena - Baldrian, Josef - Baše, Tomáš - Piorkowska, E.
Nucleated crystallization of isotactic polypropylene in multilayered sandwich nanocomposites with gold particles.
Journal of Applied Polymer Science. Roč. 125, č. 6 (2012), s. 4338-4346. ISSN 0021-8995. E-ISSN 1097-4628.
[International Conference on Polymer Behavior /4./. Lodz, 19.09.2010-23.09.2010]
R&D Projects: GA ČR GAP205/10/0348; GA AV ČR KAN200520704
Institutional research plan: CEZ:AV0Z40500505; CEZ:AV0Z40320502
Keywords : isotactic poly(propylene) * nucleated crystallization * gold nanoparticles
Subject RIV: EB - Genetics ; Molecular Biology; CF - Physical ; Theoretical Chemistry (UACH-T)
Impact factor: 1.395, year: 2012

Nucleation of isotactic polypropylene (PP) crystallization by gold particles with various sizes and shapes was studied. The morphology of gold particles ranged from microcrystals with well-developed crystal facets (AuMC) to vacuum-sputtered 5 nm gold nanoparticles (AuNP), 30 nm gold nanoislands (AuNI), and compact gold nanolayer (AuNL). The nucleated crystallization was studied by means of the improved sandwich method, which consisted in the controlled deposition of a homogeneous nucleant layer between ~ 100 μm PP films, followed by the careful thermal treatment and the evaluation of the nucleation activity by three independent methods: polarized-light microscopy, two-dimensional wide-angle X-ray scattering, and differential scanning calorimetry. It was demonstrated that the nucleating activity of gold strongly depended on its morphology.
Permanent Link: http://hdl.handle.net/11104/0006997