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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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Preparation of acrylic copolymers via emulsion polymerization
Arvai, Tomáš ; Petrůj, Jaroslav (referee) ; Kučera, František (advisor)
The diploma thesis deals with preparation of acrylic copolymers via emulsion polymerization technique. Two sets of copolymer samples were prepared within this thesis, n BA/MMA and 2-EHA/MMA copolymers. n-BA/MMA copolymer sample was used for investigation of effect of surfactant concentration as well as effect of addition of acrylic acid to the feed composition. During all the copolymerizations, conversion was observed via solids content evaluation as the reaction progressed. Copolymerization was lead under inert atmosphere at continuous stirring and 80 °C for 4 hours. Glass transition temperature of samples was determined with DSC and Vicat softening point was measured as well. Data acquired from measurements were compared with values calculated with Fox equation which was used for modelling molar ratio of monomers in initial feed.
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Synthesis of Polymer Particles by Emulsion Polymerization.
Strašák, Tomáš
This report describes preparation of polystyrene particles with narrow size distribution by emulsion polymerization. These particles called also PS latex have size around 600-700 nm and serve as starting material for preparation of stationary phase for Ion Exchange Chromatography (IEC).
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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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Preparation of acrylic copolymers via emulsion polymerization
Arvai, Tomáš ; Petrůj, Jaroslav (referee) ; Kučera, František (advisor)
The diploma thesis deals with preparation of acrylic copolymers via emulsion polymerization technique. Two sets of copolymer samples were prepared within this thesis, n BA/MMA and 2-EHA/MMA copolymers. n-BA/MMA copolymer sample was used for investigation of effect of surfactant concentration as well as effect of addition of acrylic acid to the feed composition. During all the copolymerizations, conversion was observed via solids content evaluation as the reaction progressed. Copolymerization was lead under inert atmosphere at continuous stirring and 80 °C for 4 hours. Glass transition temperature of samples was determined with DSC and Vicat softening point was measured as well. Data acquired from measurements were compared with values calculated with Fox equation which was used for modelling molar ratio of monomers in initial feed.
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