Polyhydroxybutyrate-Based Nanocomposites with Cellulose Nanocrystals and Bacterial Cellulose

Polyhydroxybutyrate (PHB) films nanoreinforced with hydrolyzed cellulose nanocrystals (CNC) and bacterial cellulose (BC) were prepared by solvent casting. The influence of different cellulose nanoparticles content (2, 4 and 6 wt% of CNC and 2 wt% of BC) on the PHB properties was studied. CNC nanocom...

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Bibliographic Details
Published in:Journal of polymers and the environment 2017-09, Vol.25 (3), p.586-598
Main Authors: Seoane, I. T., Cerrutti, P., Vazquez, A., Manfredi, L. B., Cyras, V. P.
Format: Article
Language:English
Subjects:
Bacteria
Biodegradation
Cellulose
Chemistry
Chemistry and Materials Science
Crystals
Environmental Chemistry
Environmental Engineering/Biotechnology
Industrial Chemistry/Chemical Engineering
Materials Science
Mechanical properties
Nanocomposites
Nanocrystals
Nanoparticles
Original Paper
Polyhydroxybutyrate
Polyhydroxybutyric acid
Polymer Sciences
Temperature effects
Thermal stability
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Summary:Polyhydroxybutyrate (PHB) films nanoreinforced with hydrolyzed cellulose nanocrystals (CNC) and bacterial cellulose (BC) were prepared by solvent casting. The influence of different cellulose nanoparticles content (2, 4 and 6 wt% of CNC and 2 wt% of BC) on the PHB properties was studied. CNC nanocomposites presented good dispersion of the nanocrystals, improving transparency, mechanical and barrier properties of the PHB films. On the other hand, reduced thermal stability and mechanical properties were yielded by BC addition due to the intrinsic lower degradation temperature and higher length of the BC nanofibrils compared to CNC. Nanocomposites performance variation is mainly caused by the marked difference in nanoparticles structure. It was demonstrated that PHB–CNC films exhibited higher performance enhancement without detrimental effect of the pristine PHB properties.
ISSN:1566-2543
1572-8919
1572-8900
DOI:10.1007/s10924-016-0838-8