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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F14%3A00427379%21RIV15-GA0-61389013
rdf:type
n12:Vysledek skos:Concept
dcterms:description
High-quality titanate nanotubes (TiNT) were mixed with modified polypropylene (PP*) by a batch melt-mixing procedure. To improve compatibility between the nanofiller and the matrix, polypropylene (PP) was modified by electron beam irradiation. Effects of TiNT nanoparticles on crystallization, mechanical, thermal and rheological properties of the modified polypropylene were studied and compared with the analogous systems filled with commercial micro- (mTiO2) and nano- (nTiO2) titanium dioxide particles. Nucleation effects of the TiO2-based fillers on PP* crystallization were investigated in detail. The microstructure of the PP*/TiNT nanocomposites shows well-dispersed TiNT sparse aggregates (clouds), penetrated by the polymer. A large-scale structure in the nanocomposite melts confirmed also rheology. In comparison to the matrix characteristics, the stiffness and microhardness of the TiNT nanocomposites increase by 27 and 33 %, respectively. The enhancement in mechanical properties demonstrates that the quality titanate nanotubes can be used as an efficient filler in non-polar polymers using the polymers modified by irradiation. In the case of the nanocomposites containing nTiO2-anatase particles, the increase in these mechanical characteristics is lower. The investigated changes in the rate of crystallization indicate a marked nucleation effect of the nanotubes. The crystallization kinetics data, processed by the Avrami equation, suggest 3-dimensional crystal growth in the polypropylene matrix. The observed improvement in mechanical properties of the TiNT nanocomposites is induced not only by the nanofiller reinforcement but also by the changes of supermolecular structure of the polymer matrix due to nucleated crystallization. High-quality titanate nanotubes (TiNT) were mixed with modified polypropylene (PP*) by a batch melt-mixing procedure. To improve compatibility between the nanofiller and the matrix, polypropylene (PP) was modified by electron beam irradiation. Effects of TiNT nanoparticles on crystallization, mechanical, thermal and rheological properties of the modified polypropylene were studied and compared with the analogous systems filled with commercial micro- (mTiO2) and nano- (nTiO2) titanium dioxide particles. Nucleation effects of the TiO2-based fillers on PP* crystallization were investigated in detail. The microstructure of the PP*/TiNT nanocomposites shows well-dispersed TiNT sparse aggregates (clouds), penetrated by the polymer. A large-scale structure in the nanocomposite melts confirmed also rheology. In comparison to the matrix characteristics, the stiffness and microhardness of the TiNT nanocomposites increase by 27 and 33 %, respectively. The enhancement in mechanical properties demonstrates that the quality titanate nanotubes can be used as an efficient filler in non-polar polymers using the polymers modified by irradiation. In the case of the nanocomposites containing nTiO2-anatase particles, the increase in these mechanical characteristics is lower. The investigated changes in the rate of crystallization indicate a marked nucleation effect of the nanotubes. The crystallization kinetics data, processed by the Avrami equation, suggest 3-dimensional crystal growth in the polypropylene matrix. The observed improvement in mechanical properties of the TiNT nanocomposites is induced not only by the nanofiller reinforcement but also by the changes of supermolecular structure of the polymer matrix due to nucleated crystallization.
dcterms:title
Nanocomposites of polypropylene/titanate nanotubes: morphology, nucleation effects of nanoparticles and properties Nanocomposites of polypropylene/titanate nanotubes: morphology, nucleation effects of nanoparticles and properties
skos:prefLabel
Nanocomposites of polypropylene/titanate nanotubes: morphology, nucleation effects of nanoparticles and properties Nanocomposites of polypropylene/titanate nanotubes: morphology, nucleation effects of nanoparticles and properties
skos:notation
RIV/61389013:_____/14:00427379!RIV15-GA0-61389013
n3:aktivita
n7:P n7:I
n3:aktivity
I, P(GAP205/10/0348)
n3:cisloPeriodika
4
n3:dodaniDat
n17:2015
n3:domaciTvurceVysledku
n5:3071103 n5:1697978 Zhigunov, Alexander Vu, Ngoc Húng n5:4252454 n5:5033470 n5:3818322
n3:druhVysledku
n8:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
31490
n3:idVysledku
RIV/61389013:_____/14:00427379
n3:jazykVysledku
n18:eng
n3:klicovaSlova
titanate nanotubes; polypropylene nanocomposites; nucleation effect
n3:klicoveSlovo
n10:nucleation%20effect n10:titanate%20nanotubes n10:polypropylene%20nanocomposites
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[7E498DB0CB94]
n3:nazevZdroje
Polymer Bulletin
n3:obor
n13:CF
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
8
n3:projekt
n11:GAP205%2F10%2F0348
n3:rokUplatneniVysledku
n17:2014
n3:svazekPeriodika
71
n3:tvurceVysledku
Kratochvíl, Jaroslav Vacková, Taťana Šlouf, Miroslav Popelková, Daniela Vu, Ngoc Húng Zhigunov, Alexander Gohs, U. Mikešová, Jana
n3:wos
000333211100003
s:issn
0170-0839
s:numberOfPages
24
n4:doi
10.1007/s00289-013-1093-y