Thermoplastic starch composites with TiO2 particles: preparation, morphology, rheology and mechanical properties

Ostafinska, Aleksandra; Mikešová, Jana; Krejčíková, Sabina; Nevoralová, Martina; Šturcová, Adriana; Zhigunov, Alexander; Michálková, Danuše; Šlouf, Miroslav

doi:https://dx.doi.org/10.1016/j.ijbiomac.2017.03.104

Number of the records: 1

Thermoplastic starch composites with TiO2 particles: preparation, morphology, rheology and mechanical properties

1.

SYSNO ASEP	0473601
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Thermoplastic starch composites with TiO2 particles: preparation, morphology, rheology and mechanical properties
Author(s)	Ostafinska, Aleksandra (UMCH-V)_{RID, ORCID} Mikešová, Jana (UMCH-V) Krejčíková, Sabina (UMCH-V) Nevoralová, Martina (UMCH-V)_{RID, ORCID} Šturcová, Adriana (UMCH-V)_RID Zhigunov, Alexander (UMCH-V)_{RID, ORCID} Michálková, Danuše (UMCH-V) Šlouf, Miroslav (UMCH-V)_{RID, ORCID}
Source Title	International Journal of Biological Macromolecules. - : Elsevier - ISSN 0141-8130 Roč. 101, August (2017), s. 273-282
Number of pages	10 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	thermoplastic starch ; titanium dioxide particles ; morphology
Subject RIV	JI - Composite Materials
OECD category	Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
R&D Projects	GA14-17921S GA ČR - Czech Science Foundation (CSF)
Institutional support	UMCH-V - RVO:61389013
UT WOS	000404491300030
EID SCOPUS	85016152586
DOI	10.1016/j.ijbiomac.2017.03.104
Annotation	Composites of thermoplastic starch (TPS) with titanium dioxide particles (mTiO2, average size 0.1 mu m) with very homogeneous matrix and well-dispersed filler were prepared by a two-step method, including solution casting (SC) followed by melt mixing (MM). Light and scanning electron microscopy confirmed that only the two-step procedure (SC + MM) resulted in ideally homogeneous TPS/mTiO2 systems. The composites prepared by single-step MM contained non-plasticized starch granules and the composites prepared by single-step SC suffered from mTiO2 agglomeration. Dynamic mechanical measurements showed an increase modulus with increasing filler concentration. In TPS containing 3 wt.% of mTiO2 the stiffness was enhanced by >40%. Further experiments revealed that the recommended addition of chitosan or the exchange of mTiO2 for anisometric titanate nanotubes with high aspect ratio did not improve the properties of the composites.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2018

Number of the records: 1