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Plasma Chemical Surface Treatment of Polymeric Materials for Biomedical Applications
Mikušková, Radka ; Kozáková, Zdenka (referee) ; Krčma, František (advisor)
The theoretical part of bacalor thesis summarizes a plasma application for surface modification of materials used for biomedical applications. The main focus is on polymeric materials. Practical part focuses on specific surface modifications. An aim is to obtain from the initially hydrophobic surface hydrophilic by plasma chemical surface treatment and to optimize the method. Hydrophilicity is achieved by treating the sample in low temperature low pressure plasma generated in air based gaseous mixtures. The surface treatment efficiency is characterizad by water leak through the material. Structural changes of material surface are confirmed by X-ray photoelectron spectroscopy.
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Study of selected surface treatment methods of metallic materials
Mikušková, Radka ; Vlas, Petr (referee) ; Krčma, František (advisor)
The theoretical part of this master thesis summarizes the issue of surface treatment of metallic material with a focus on corrosion protection. It describes corrosion and divides the corrosion protection possibilities, focusing primarily on the way of creating protective surfaces, which is currently the most widespread method. From this category, the phosphating and electrostatic coating are described in more detail, because these methods are used later in the experimental part. It also deals with the methodology of corrosion testing and evaluation of corrosion. The practical part focuses on specific and selected surface treatment and is based on the requirements of private company IDEAL-Trade Service, spol. s r.o. Its goal is to optimize Zr-phosphate chemical pretreatment to increase the corrosion resistance of the material. In the begging, the X-ray diffraction analysis (XRD) of sample from coating line was performed using aforementioned Zr-phospating process. Then, a simple laboratory model of the process was constructed. For individual treated samples, the concentration of the bath and its pH were always altered. Furthermore, the preparation solution was enhanced by additives and the effect on the resulting properties was monitored. For the selection of the additive, the elemental analysis by inductively coupled plasma (IPC) of the old and new phosphating bath in the coating line was used.
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Study of selected surface treatment methods of metallic materials
Mikušková, Radka ; Vlas, Petr (referee) ; Krčma, František (advisor)
The theoretical part of this master thesis summarizes the issue of surface treatment of metallic material with a focus on corrosion protection. It describes corrosion and divides the corrosion protection possibilities, focusing primarily on the way of creating protective surfaces, which is currently the most widespread method. From this category, the phosphating and electrostatic coating are described in more detail, because these methods are used later in the experimental part. It also deals with the methodology of corrosion testing and evaluation of corrosion. The practical part focuses on specific and selected surface treatment and is based on the requirements of private company IDEAL-Trade Service, spol. s r.o. Its goal is to optimize Zr-phosphate chemical pretreatment to increase the corrosion resistance of the material. In the begging, the X-ray diffraction analysis (XRD) of sample from coating line was performed using aforementioned Zr-phospating process. Then, a simple laboratory model of the process was constructed. For individual treated samples, the concentration of the bath and its pH were always altered. Furthermore, the preparation solution was enhanced by additives and the effect on the resulting properties was monitored. For the selection of the additive, the elemental analysis by inductively coupled plasma (IPC) of the old and new phosphating bath in the coating line was used.
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Transformation of neutrality concept in theory and practice of selected European states
Mikušková, Radka ; Romancov, Michael (advisor) ; Pulgret, Miroslav (referee)
Proměny konceptu neutrality v teorii a praxi vybraných evropských států Abstract The thesis explores the emergence of a unique concept of neutrality within each the three neutral European countries: Sweden, Switzerland and Austria. In then examines changes in the policy of neutrality over time within each compared states, with emphasis on the post - Cold War transition from a bipolar to a multipolar world order. It is concluded that the end of the Cold War has had a marked influence on changes in the concept of neutrality within each of the compared states, largely because of the emergence of novel threats which can be now more effectively controlled through international cooperation as opposed to unilateral action by a single nation.
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Transformation of neutrality concept in theory and practice of selected European states
Mikušková, Radka ; Romancov, Michael (advisor) ; Pulgret, Miroslav (referee)
Proměny konceptu neutrality v teorii a praxi vybraných evropských států Abstract The thesis explores the emergence of a unique concept of neutrality within each the three neutral European countries: Sweden, Switzerland and Austria. In then examines changes in the policy of neutrality over time within each compared states, with emphasis on the post - Cold War transition from a bipolar to a multipolar world order. It is concluded that the end of the Cold War has had a marked influence on changes in the concept of neutrality within each of the compared states, largely because of the emergence of novel threats which can be now more effectively controlled through international cooperation as opposed to unilateral action by a single nation.
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Plasma Chemical Surface Treatment of Polymeric Materials for Biomedical Applications
Mikušková, Radka ; Kozáková, Zdenka (referee) ; Krčma, František (advisor)
The theoretical part of bacalor thesis summarizes a plasma application for surface modification of materials used for biomedical applications. The main focus is on polymeric materials. Practical part focuses on specific surface modifications. An aim is to obtain from the initially hydrophobic surface hydrophilic by plasma chemical surface treatment and to optimize the method. Hydrophilicity is achieved by treating the sample in low temperature low pressure plasma generated in air based gaseous mixtures. The surface treatment efficiency is characterizad by water leak through the material. Structural changes of material surface are confirmed by X-ray photoelectron spectroscopy.
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