Morphology study of 2-ethylhexyl acrylate/cellulose acetate propionate microcapsules prepared via solvent evaporation technique

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Morphology study of 2-ethylhexyl acrylate/cellulose acetate propionate microcapsules prepared via solvent evaporation technique

Popis výsledku v původním jazyce

Novel 2-ethylhexyl acrylate (2-EHA)/cellulose acetate propionate (CAP) microcapsules with mononuclear core-shell morphology are potentially an interesting model system for polymerization inside microcapsules. Microencapsulation was performed by solvent evaporation technique from dichloromethane solution dispersed in poly(vinyl alcohol) solution. Microcapsule morphology, which evolved from partially raspberry-like to a bowl like due to premature shell formation and subsequent solvent evaporation, was captured by microscopy imaging techniques. Thus it has been concluded that kinetics of CAP shell formation play a crucial role in preparation of 2 EHA/CAP microcapsules. Moreover, microcapsules were ruptured in compression under microscope in order to evaluate fracture type. Ductile fracture of microcapsule shell was observed. Shell thickness of 0.3 μm was estimated by scanning electron microscopy. Even though bowl-like morphology of microcapsules was not favorable for polymerization inside microcapsules, some microcapsules gained irregular crumpled shape which facilitated formation of microporous hollow particles after drying the microcapsule suspension. These microporous particles may promise further research potential for development of particles with controlled release profile.

Název v anglickém jazyce

Morphology study of 2-ethylhexyl acrylate/cellulose acetate propionate microcapsules prepared via solvent evaporation technique

Popis výsledku anglicky

Novel 2-ethylhexyl acrylate (2-EHA)/cellulose acetate propionate (CAP) microcapsules with mononuclear core-shell morphology are potentially an interesting model system for polymerization inside microcapsules. Microencapsulation was performed by solvent evaporation technique from dichloromethane solution dispersed in poly(vinyl alcohol) solution. Microcapsule morphology, which evolved from partially raspberry-like to a bowl like due to premature shell formation and subsequent solvent evaporation, was captured by microscopy imaging techniques. Thus it has been concluded that kinetics of CAP shell formation play a crucial role in preparation of 2 EHA/CAP microcapsules. Moreover, microcapsules were ruptured in compression under microscope in order to evaluate fracture type. Ductile fracture of microcapsule shell was observed. Shell thickness of 0.3 μm was estimated by scanning electron microscopy. Even though bowl-like morphology of microcapsules was not favorable for polymerization inside microcapsules, some microcapsules gained irregular crumpled shape which facilitated formation of microporous hollow particles after drying the microcapsule suspension. These microporous particles may promise further research potential for development of particles with controlled release profile.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10404 - Polymer science

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Studentská odborná konference Chemie je život 2017 Sborník konferenčních příspěvků

ISBN

978-80-214-5489-7

ISSN

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e-ISSN

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Počet stran výsledku

224

Strana od-do

174-184

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Brno

Datum konání akce

23. 3. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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