Morphology and thermal degradation studies of PHB/acetylated lignin foils

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F19%3APU132348" target="_blank" >RIV/00216305:26310/19:PU132348 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Morphology and thermal degradation studies of PHB/acetylated lignin foils

Popis výsledku v původním jazyce

Poly(3-hydroxybutyrate) (PHB) is biopolymer with the advantages including bio-origin, biocompatibility, and biodegradability. Unfortunately, rheological and mechanical properties of PHB are influenced by the range of thermal degradation occurred during polymer processing. This work takes advantage of acetylated lignin reinforcing PHB composites that originate from grape bunches or seeds. Lignin was isolated by formic acid/ acetic acid. PHB/acetylated lignin composites were prepared by solution casting followed by thermoforming. The solubility and compatibility of lignin have been improved by acetylation. Neat PHB foil was very brittle reaching crystallinity of 70 %. Such high crystallinity causes high brittleness, which is not suitable for foils with packaging application. Lignin is a rigid highly cross-linked natural polymer consisting of phenylpropane units with no plasticizing effect. We will present that there is a high potential for preparation of PHB/PHA blends to improve the flexibility of PHB/

Název v anglickém jazyce

Morphology and thermal degradation studies of PHB/acetylated lignin foils

Popis výsledku anglicky

Poly(3-hydroxybutyrate) (PHB) is biopolymer with the advantages including bio-origin, biocompatibility, and biodegradability. Unfortunately, rheological and mechanical properties of PHB are influenced by the range of thermal degradation occurred during polymer processing. This work takes advantage of acetylated lignin reinforcing PHB composites that originate from grape bunches or seeds. Lignin was isolated by formic acid/ acetic acid. PHB/acetylated lignin composites were prepared by solution casting followed by thermoforming. The solubility and compatibility of lignin have been improved by acetylation. Neat PHB foil was very brittle reaching crystallinity of 70 %. Such high crystallinity causes high brittleness, which is not suitable for foils with packaging application. Lignin is a rigid highly cross-linked natural polymer consisting of phenylpropane units with no plasticizing effect. We will present that there is a high potential for preparation of PHB/PHA blends to improve the flexibility of PHB/

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10404 - Polymer science

Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2019

Kód důvěrnosti údajů

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