Biosynthesis of Polyhydroxybutyrate with Cellulose Nanocrystals Using Cupriavidus necator

Polyhydroxybutyrate (PHB) is a natural polyester synthesized by several microorganisms. Moreover, it has excellent biodegradability and is an eco-friendly material because it converts water and carbon dioxide as final decomposition products. However, the applications of PHB are limited because of it...

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Bibliographic Details
Published inPolymers Vol. 13; no. 16; p. 2604
Main Authors Shin, Giyoung, Jeong, Da-Woon, Kim, Hyeri, Park, Seul-A, Kim, Semin, Lee, Ju Young, Hwang, Sung Yeon, Park, Jeyoung, Oh, Dongyeop X
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 05.08.2021
MDPI
Subjects
Biocompatibility
Biodegradability
Biodegradable materials
Biosynthesis
Carbon
Carbon dioxide
Cell growth
Cellulose
cellulose nanocrystals
Communication
Contact angle
Dispersion
Fermentation
Fourier transforms
Mechanical properties
Microorganisms
Nanocomposites
Nanocrystals
natural polyester
NMR
Nuclear magnetic resonance
Physical properties
Polyester resins
Polyhydroxybutyrate
Polymers
Spectrum analysis
Stiffness
Transmission electron microscopy
United States > US
natural polyester
polyhydroxybutyrate
nanocomposites
cellulose nanocrystals
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Summary:Polyhydroxybutyrate (PHB) is a natural polyester synthesized by several microorganisms. Moreover, it has excellent biodegradability and is an eco-friendly material because it converts water and carbon dioxide as final decomposition products. However, the applications of PHB are limited because of its stiffness and brittleness. Because cellulose nanocrystals (CNCs) have excellent intrinsic mechanical properties such as high specific strength and modulus, they may compensate for the insufficient physical properties of PHB by producing their nanocomposites. In this study, natural polyesters were extracted from fermentation with CNCs, which were well-dispersed in nitrogen-limited liquid culture media. Fourier-transform infrared spectroscopy results revealed that the additional O-H peak originating from cellulose at 3500-3200 cm was observed for PHB along with the C=O and -COO bands at 1720 cm . This suggests that PHB-CNC nanocomposites could be readily obtained using fermented in well-dispersed CNC-supplemented culture media.
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ISSN:2073-4360
2073-4360
DOI:10.3390/polym13162604