Abstract
In this experimental research, different types of essential oils (EOs) were blended with polyhydroxybutyrate (PHB) to study the influence of these additives on PHB degradation. The blends were developed by incorporating three terpenoids at two concentrations (1 and 3%). The mineralization rate obtained from CO2 released from each sample was the factor that defined biodegradation. Furthermore, scanning electron microscope (SEM), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA) were used in this research. The biodegradation percentages of PHB blended with 3% of eucalyptol, limonene, and thymol after 226 days were reached 66.4%, 73.3%, and 76.9%, respectively, while the rate for pure PHB was 100% after 198 days, and SEM images proved these results. Mechanical analysis of the samples showed that eucalyptol had the highest resistance level, even before the burial test. The other additives showed excellent mechanical properties although they had less mechanical strength than pure PHB after extrusion. The samples’ mechanical properties improved due to their crystallinity and decreased glass transition temperature (Tg). DSC results showed that blending terpenoids caused a reduction in Tg, which is evident in the DMA results, and a negligible reduction in melting point (Tm).
Funder
Internal Grant Agency of Tomas Bata University in Zlín
European Union’s Horizon 2020 Research and Innovation Program
Subject
Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Computer Science Applications,Spectroscopy,Molecular Biology,General Medicine,Catalysis
Reference37 articles.
1. Hydroplastic polymers as eco-friendly hydrosetting plastics;Nat. Sustain.,2021
2. Fogašová, M., Figalla, S., Danišová, L., Medlenová, E., Hlaváčiková, S., Bočkaj, J., Plavec, R., Alexy, P., Repiská, M., and Přikryl, R. (2022). PLA/PHB-Based Materials Fully Biodegradable under Both Industrial and Home-Composting Conditions. Polymers, 14.
3. Natural Terpenes Used as Plasticizers for Poly(3-hydroxybutyrate);ACS Sustain. Chem. Eng.,2018
4. Recycling of waste streams of the biotechnological poly(hydroxyalkanoate) production by Haloferax mediterranei on whey;Int. J. Polym. Sci.,2015
5. Biodegradation of eugenol-loaded polyhydroxybutyrate films in different soil types;Case Stud. Chem. Environ. Eng.,2020
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献