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Polymers
Volume 16
Issue 21
10.3390/polym16213077
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Article

Evaluation of Blended Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Properties Containing Various 3HHx Monomers

by
Nara Shin
1,
Su Hyun Kim
1,
Jinok Oh
1,
Suwon Kim
1,
Yeda Lee
1,
Yuni Shin
1,
Suhye Choi
1,
Shashi Kant Bhatia
1,2,
Jong-Min Jeon
3,
Jeong-Jun Yoon
3,
Jeong Chan Joo
4,* and
Yung-Hun Yang
1,2,*
1
Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
2
Institute for Ubiquitous Information Technology and Application, Konkuk University, Seoul 05029, Republic of Korea
3
Green & Sustainable Materials R&D Department, Research Institute of Clean Manufacturing System, Korea Institute of Industrial Technology (KITECH), Cheonan-si 31056, Republic of Korea
4
Department of Chemical Engineering, Kyung Hee University, Yongin-si 17104, Republic of Korea
*
Authors to whom correspondence should be addressed.
Polymers 2024, 16(21), 3077; https://doi.org/10.3390/polym16213077
Submission received: 30 September 2024 / Revised: 19 October 2024 / Accepted: 29 October 2024 / Published: 31 October 2024
(This article belongs to the Special Issue Bio-Based and Biodegradable Polymers: Synthesis, Characterization and Applications)
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Abstract

Polyhydroxyalkanoate (PHA), specifically poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (P(3HB-co-3HHx), PHBHHx) with physical properties governed by the 3-hydroxyhexanoate (3HHx) mole fraction, is a promising bioplastic. Although engineered strains used to produce P(3HB-co-3HHx) with various 3HHx mole contents and fermentation techniques have been studied, mass production with specific 3HHx fractions and monomers depends on the batch, supply of substrates, and strains, resulting in the time-consuming development of strains and complex culture conditions for P(3HB-co-3HHx). To overcome these limitations, we blended poly(3-hydroxybutyrate) [(P(3HB), produced from C. necator H16] and P(3HB-co-20 mol%3HHx) [from C. necator 2668/pCB81] to prepare films with various 3HHx contents. We evaluated the molecular weight and physical, thermal, and mechanical properties of these films and confirmed the influence of the 3HHx monomer content on the mechanical and thermal properties as well as degradability of the blended P(3HB-co-3HHx) films containing various 3HHx mole fractions, similar to that of original microbial-based P(3HB-co-3HHx). Moreover, the degradation rate analyzed via Microbulbifer sp. was >76% at all blending ratios within 2 days, whereas a weaker effect of the 3HHx mole fraction of the blended polymer on degradation was observed. P(3HB-co-3HHx) could be produced via simple blending using abundantly produced P(3HB) and P(3HB-co-20 mol%HHx), and the resulting copolymer is applicable as a biodegradable plastic.
Keywords: bioplastics; polyhydroxyalkanoate; poly(3-hydroxybutyrate-co-3-hydroxyhexanoate); polymer blends bioplastics; polyhydroxyalkanoate; poly(3-hydroxybutyrate-co-3-hydroxyhexanoate); polymer blends

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MDPI and ACS Style

Shin, N.; Kim, S.H.; Oh, J.; Kim, S.; Lee, Y.; Shin, Y.; Choi, S.; Bhatia, S.K.; Jeon, J.-M.; Yoon, J.-J.; et al. Evaluation of Blended Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Properties Containing Various 3HHx Monomers. Polymers 2024, 16, 3077. https://doi.org/10.3390/polym16213077

AMA Style

Shin N, Kim SH, Oh J, Kim S, Lee Y, Shin Y, Choi S, Bhatia SK, Jeon J-M, Yoon J-J, et al. Evaluation of Blended Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Properties Containing Various 3HHx Monomers. Polymers. 2024; 16(21):3077. https://doi.org/10.3390/polym16213077

Chicago/Turabian Style

Shin, Nara, Su Hyun Kim, Jinok Oh, Suwon Kim, Yeda Lee, Yuni Shin, Suhye Choi, Shashi Kant Bhatia, Jong-Min Jeon, Jeong-Jun Yoon, and et al. 2024. "Evaluation of Blended Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Properties Containing Various 3HHx Monomers" Polymers 16, no. 21: 3077. https://doi.org/10.3390/polym16213077

APA Style

Shin, N., Kim, S. H., Oh, J., Kim, S., Lee, Y., Shin, Y., Choi, S., Bhatia, S. K., Jeon, J.-M., Yoon, J.-J., Joo, J. C., & Yang, Y.-H. (2024). Evaluation of Blended Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Properties Containing Various 3HHx Monomers. Polymers, 16(21), 3077. https://doi.org/10.3390/polym16213077

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