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Novel embedding resins for 3D-SEM II
Šlouf, Miroslav ; Pavlova, Ewa ; Strachota, Beata ; Strachota, Adam ; Nebesářová, Jana ; Týč, Jiří ; Krzyžánek, Vladislav ; Skoupý, Radim
Research report for Thermo Fisher Scientific s. r. o., based on common project awarded by TA CR (program: National center of competence, TN01000008).
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Control of the morphology of biodegradable polymer blends
Ostafińska, Aleksandra ; Šlouf, Miroslav (advisor) ; Kosek, Juraj (referee) ; Vohlídal, Jiří (referee)
This dissertation, entitled »Control of the morphology of biodegradable polymer blends«, has been running parallel with the grant project »Multiphase biodegradable polymer systems« and it represents a new research direction in the Department of morphology and rheology of polymer materials at the Institute of Macromolecular Chemistry. The main idea was to employ our long-lasting work and experience in the field of morphology control of synthetic polymer blends in the very analogous field of the biodegradable polymer blends. We have chosen three most common, widely used and relatively cheap bio-based polymers - starch, poly(lactic acid) and poly(ε-caprolactone) - in order to investigate how the properties of their blends might be improved if we control the blend morphology in targeted, reproducible and well-defined way from the very beginning. It has been well established that morphology (phase structure, supramolecular structure) is one of the key factors influencing final properties of polymer blends, including mechanical performance, rate of (bio)degradation, gas permeability etc. In this work, numerous preliminary experiments showed that there are two systems in which the morphology control could significantly help in the improving of their end-use properties: PLA/PCL/TiX (where PLA = poly(lactic acid),...
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Control of the morphology of biodegradable polymer blends
Ostafińska, Aleksandra ; Šlouf, Miroslav (advisor) ; Kosek, Juraj (referee) ; Vohlídal, Jiří (referee)
This dissertation, entitled »Control of the morphology of biodegradable polymer blends«, has been running parallel with the grant project »Multiphase biodegradable polymer systems« and it represents a new research direction in the Department of morphology and rheology of polymer materials at the Institute of Macromolecular Chemistry. The main idea was to employ our long-lasting work and experience in the field of morphology control of synthetic polymer blends in the very analogous field of the biodegradable polymer blends. We have chosen three most common, widely used and relatively cheap bio-based polymers - starch, poly(lactic acid) and poly(ε-caprolactone) - in order to investigate how the properties of their blends might be improved if we control the blend morphology in targeted, reproducible and well-defined way from the very beginning. It has been well established that morphology (phase structure, supramolecular structure) is one of the key factors influencing final properties of polymer blends, including mechanical performance, rate of (bio)degradation, gas permeability etc. In this work, numerous preliminary experiments showed that there are two systems in which the morphology control could significantly help in the improving of their end-use properties: PLA/PCL/TiX (where PLA = poly(lactic acid),...
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A study of silver nanoparticle behavior in liquid media for ecotoxicity tests
Opršal, J. ; Pouzar, M. ; Knotek, P. ; Šlouf, Miroslav ; Pavlova, Ewa
The up to date increasing number of nanotechnology applications is linked with a serious danger of environmental pollution by nanomaterials. Consequently, the ecotoxicity testing of nanomaterials becomes an essential part of nanotechnology development. Classical ecotoxicity tests suffer with a number of complications when used for nanomaterials. In the case of aquatic toxicity tests, the nanoparticle agglomeration in the liquid media is a fundamental problem. The aim of this work is to evaluate the influence of important physico-chemical parameters (nanoparticle concentration and illumination conditions) on an agglomeration of 40 nm silver nanoparticles (AgNPs) in a liquid media prescribed for fish eco-toxicity test by the OECD 203 guideline (Medium 203).
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