Commercial Grade of P(3HB‐co‐3HHX) Final Properties Adjustment by the Modification of Cooling Conditions in the Injection Molding and Ageing Process

Autor:	Juan Ivorra‐Martinez, Jaume Gomez‐Caturla, Miguel Angel Peydro, Miguel Angel Selles, Teodomiro Boronat
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	ageing and annealing degree of crystallinity injection molding mechanical properties P(3HB‐co‐3HHx) PHA Materials of engineering and construction. Mechanics of materials TA401-492 Engineering (General). Civil engineering (General) TA1-2040
Zdroj:	Macromolecular Materials and Engineering, Vol 309, Iss 6, Pp n/a-n/a (2024)
Druh dokumentu:	article
ISSN:	1439-2054 1438-7492
DOI:	10.1002/mame.202400033
Popis:	Abstract Poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) is a polymer obtained by bacterial fermentation that emerges as an alternative to polymers of petrochemical origin. The complex crystallization kinetics that occurs over 15 days after melting, known as ageing, limits its industrial application. During the aging process, there is a change of the degree of crystallinity, which has an effect on the chemical structure of the material. Additionally, changes in the mechanical properties, colorimetry, and dimensional shrinkage are observed. Different material properties are observed depending on the cooling conditions employed. For the ageing process, two different conditions are considered: ageing at room temperature and annealing at high temperature (60 °C).
Databáze:	Directory of Open Access Journals
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