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Testing of surfactants for copolymerization of acrylic monomers
Novotný, Igor ; Arvai, Tomáš (referee) ; Kučera, František (advisor)
The Bachelor thesis deals with testing effect of surfactants for preparing acrylate copolymers of methyl methacrylate and butyl arylate via emulsion copolymerization. The effect of concentration of surfactant used to rate of copolymerization during copolymerization was investigated. By DLS was measured particle size and relative average molecular weight was determinate via capillary viscometer for characterization of prepared copolymers. Data acquired from measurements were compared and analyzed if it has some contribution when surfactants are mixed together.
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Grafting VTMOS onto PHB
Novotný, Igor ; Petruš, Josef (referee) ; Kučera, František (advisor)
Diploma thesis deals with the grafting of vinyltrimethoxysilane (VTMOS) onto poly(3–hydroxybutyrate)PHB. Subsequent characterization of the amount of grafted VTMOS and changes in the thermal properties associated with the rate of crystallization. The theoretical part deals with mechanism and the influences of grafting. In the experimental part VTMOS was grafted onto PHB without subjecting VTMOS to hydrolysis and subsequent crosslinking. By differential scanning calorimetry (DSC) and Avrami equation, the effect of grafted silane group on pure was studied. The MVR was used to compare the rheological properties of initial PHB, grafted PHB and crosslinked PHB by siloxane linkages.
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Identification of risks in the process of marketing strategy formulation and realisation and their solving
Novotný, Igor ; Válka, Vít (referee) ; Chalupský, Vladimír (advisor)
The aim of this thesis is to identify the risk, emerging from use of the marketing attitude in ALL SPORTS ltd., qulify its potential impact to the operation of the company and suggest the proceeding to minimize the negative impacts. First part includes theoritical resources for exploring of the aim, there is explained basic terminology and described technique, styles and analyses that are necessary for identifying the risks, identification of the risk situation and ratio of the probability that risk situation will occure. Second part of the thesis is practical and theoretical informations mentioned in first part are applied for identification and valuation of the risks. On the basis of performed analyses I identified risks and ratio of the probability for occuring. In the last part of the thesis I described proceeding for elimination of these risks including quantification of the cost.
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Grafting VTMOS onto PHB
Novotný, Igor ; Petruš, Josef (referee) ; Kučera, František (advisor)
Diploma thesis deals with the grafting of vinyltrimethoxysilane (VTMOS) onto poly(3–hydroxybutyrate)PHB. Subsequent characterization of the amount of grafted VTMOS and changes in the thermal properties associated with the rate of crystallization. The theoretical part deals with mechanism and the influences of grafting. In the experimental part VTMOS was grafted onto PHB without subjecting VTMOS to hydrolysis and subsequent crosslinking. By differential scanning calorimetry (DSC) and Avrami equation, the effect of grafted silane group on pure was studied. The MVR was used to compare the rheological properties of initial PHB, grafted PHB and crosslinked PHB by siloxane linkages.
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Identification of risks in the process of marketing strategy formulation and realisation and their solving
Novotný, Igor ; Válka, Vít (referee) ; Chalupský, Vladimír (advisor)
The aim of this thesis is to identify the risk, emerging from use of the marketing attitude in ALL SPORTS ltd., qulify its potential impact to the operation of the company and suggest the proceeding to minimize the negative impacts. First part includes theoritical resources for exploring of the aim, there is explained basic terminology and described technique, styles and analyses that are necessary for identifying the risks, identification of the risk situation and ratio of the probability that risk situation will occure. Second part of the thesis is practical and theoretical informations mentioned in first part are applied for identification and valuation of the risks. On the basis of performed analyses I identified risks and ratio of the probability for occuring. In the last part of the thesis I described proceeding for elimination of these risks including quantification of the cost.
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Testing of surfactants for copolymerization of acrylic monomers
Novotný, Igor ; Arvai, Tomáš (referee) ; Kučera, František (advisor)
The Bachelor thesis deals with testing effect of surfactants for preparing acrylate copolymers of methyl methacrylate and butyl arylate via emulsion copolymerization. The effect of concentration of surfactant used to rate of copolymerization during copolymerization was investigated. By DLS was measured particle size and relative average molecular weight was determinate via capillary viscometer for characterization of prepared copolymers. Data acquired from measurements were compared and analyzed if it has some contribution when surfactants are mixed together.
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