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Vliv technologických podmínek a složení polyhydroxybutyrátových materiálů na krystalinitu / Inflence of technological conditions and polyhydroxybutyrate materials composition on crystallinity

Diploma thesis is summarizing sources and technology of PHB and its physical and chemical properties compared to other polymers. Thesis mentions usage and function of certain additives in PHB matrix and their impact on the final product. Practical part of the thesis is concerned with technological parameters and degradation of the PHB during extrusion. The thesis also observes behaviour of nucleating agents on crystallinity and crystallization properties of prepared compounds. Degradation was analyzed by MFI and colour difference against standard material, FTIR was not successfully used for the purpose of degradation. Crystallinity and crystallization behaviour was analysed by DSC and optical microscopy with heated operating table. Graphs were created from results of analysis and suitable usage of each nucleating agent was considered. Boron nitride was selected as the most suitable nucleating agent due to creating higher amount of smaller spherulites.

Identiferoai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:295671
Date January 2017
CreatorsOlšan, Jakub
ContributorsPetruš, Josef, Kučera, František
PublisherVysoké učení technické v Brně. Fakulta chemická
Source SetsCzech ETDs
LanguageCzech
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/masterThesis
Rightsinfo:eu-repo/semantics/restrictedAccess

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