Naslov
Preparation of poly(3-hydroxybutyrate) plasticized with mixture of methyl esters derived from waste edible oils

Autori
Andričić, Branka ; Dragičević, Danijela ; Krešić, Irena ; Stipanelov Vrandečić, Nataša

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28th Croatian Meeting of Chemists and Chemical Engineers / Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2023, 182-182

Skup
28th Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
PHB, plasticization, FAME

Sažetak
Poly(3-hydroxybutyrate) (PHB) is a biodegradable polymer belonging to the poly(hydroxyalkanoate) group. It is a very brittle, material that is difficult to process and is also thermally unstable during processing. In theory, an efficient plasticizer would solve most of these problems. The fully biodegradable material must also contain a biodegradable plasticizer. Therefore, PHB was modified by mixing with various amounts of fatty acid methyl esters (FAME) to improve its mechanical and thermal properties for wider commercial application. FAME was synthesized by batch transesterification of waste edible oils with methanol. GC-MS analysis was used to determine the composition of FAME. The major components (94 %) are methyl esters of oleic and linoleic fatty acids and the rest are palmitic and stearic esters. PHB/FAME blends with 0, 10, 15, 20, 25 and 30 mas. % of FAME were prepared by dissolving both components in chloroform and followed by film casting. The characteristics of phase transitions of PHB in the blends were determined by differential scanning calorimetry (second heating curve). It was found that FAME lowers the glass transition temperature of PHB up to 10 °C (80/20 blend), but increases the degree of crystallinity from 15 % up to 60 % (75/25 blend).

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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