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Degradation possibilities of synthetic macromolecular materials centred on biodegradations
Zichová, Miroslava ; Ondruška, Vladimír (referee) ; Babák, Libor (advisor)
This work deals with the degradation possibilities of synthetic macromolecular materials. Mechanical, chemical and chemo-physical degradation is described, but the work is focused on biodegradation. Polymer biodegradation is its decomposition by microorganisms. The aim of the work is to show the advantages of biodegradation and to arrange the knowledge acquired about the biodegradation of particular macromolecular materials. There is resumed the information about the degradation of polyurethanes as an exception among synthetic polymers, which are mostly resistant to biodegradation. Attention is also paid to biodegradable polymers.
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Ekologická likvidace a recyklace plastických hmot
Nippon EKO a.s.
Zpracování polyolefinových odpadů metodou katalytického rozkladu polymerů, při kterém se získávají tekuté uhlovodíky. Produkt získaný tímto způsobem neobsahuje síru, chlor a jiné heteroatomy, což rozhoduje o jeho využitelnosti jako vysoce kvalitního syntetického oleje. Pro výrobu lze použít polymerový odpad, který je stovky let nezničitelný např. zemědělské fólie a obaly vyrobené z polypropylenu, polyetylénu a polystyrenu.
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Numerical modelling of damage of a particulate composite with polymer matrix
Máša, Bohuslav ; Ševčík, Martin ; Náhlík, Luboš
The main focus of this contribution is estimation of mechanical properties of a composite loaded in tension using finite element method. Investigated composite is composed of matrix in a rubbery state filled by alumina-based particles (Al2O3). Hyperelastic properties of the matrix have been modelled by the Mooney-Rivlin material model. The damage mechanisms of the matrix have also been taken into account. Results of numerical analyses have been compared with experimental data and good agreement between numerical models with damage mechanisms of matrix and experimental data has been found.
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Anti-cancer drugs with immunoprotective/immunomodulatory effect
Říhová, Blanka ; Etrych, Tomáš ; Kovář, Marek ; Chytil, Petr ; Hovorka, Ondřej ; Plocová, Daniela ; Mrkvan, Tomáš ; Strohalm, Jiří ; Šírová, Milada ; Šubr, Vladimír ; Kubáčková, K. ; Ulbrich, Karel
Cytotoxic drugs based on HPMA polymer show direct cytotoxic and cytostatic effect together with an ability to mobilize the immune system. Two types of linkage of the drug to the polymer are discussed, as well as linkage-related differences in tumour cell accumulation and fate of the cells
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Polymer nanomaterials and nanoprocesses in polymers
Raab, Miroslav
Polymeric nanomaterials and nanoprocesses in polymers. Polymeric nanomaterials have been attracting great interest both from scientific and technological points of view. The basic ways to nanomaterials with polymeric matrix are reviewed together with the methods for their structural characterization. These methods are suitable also for the study of nanoprocesses in polymers.
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