Return to search

Vliv katalytického systému na strukturu E/P kopolymerů / Effect of catalystic system on the structure of E/P copolymers

Thesis is focused on structural study of ethylene-propylene copolymers (E/P copolymers) produced by gas phase polymerization. Goal of work was to determine the effect of used catalysts on the distribution of ethylene units in the resulting material. Three E/P copolymers were prepared on commercial Ziegler Natta catalysts with diether or phthalate based internal donors. The copolymers were fractionated according crystallization ability and molar mass. Next, the mass content and the distribution of the ethylene units in the copolymer were determined in each fraction by nuclear magnetic resonance (NMR). Together with other structural analytical methods, phthalate internal donor has been found to produce ethylene blocks under certain conditions, while the diether ID lacks this ability.

Identiferoai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:401947
Date January 2019
CreatorsKolomazník, Vít
ContributorsKratochvíla,, Jan, CSc, Zdeněk Buráň,
PublisherVysoké učení technické v Brně. Fakulta chemická
Source SetsCzech ETDs
LanguageCzech
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/masterThesis
Rightsinfo:eu-repo/semantics/restrictedAccess

Page generated in 0.0016 seconds