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Polymers 2019, 11(3), 507; https://doi.org/10.3390/polym11030507

Studies on Chemical IR Images of Poly(hydroxybutyrate–co–hydroxyhexanoate)/Poly(ethylene glycol) Blends and Two-Dimensional Correlation Spectroscopy

1
Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Korea
2
Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
3
Danimer Scientific, 140 Industrial Blvd., Bainbridge, GA 39817, USA
4
Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Korea
*
Authors to whom correspondence should be addressed.
Received: 7 February 2019 / Revised: 6 March 2019 / Accepted: 13 March 2019 / Published: 17 March 2019
(This article belongs to the Special Issue Advanced Engineering Plastics)
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Abstract

Biodegradable poly-[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoates] (PHBHx) have been widely studied for their applications in potentially replacing petroleum-based thermoplastics. In this study, the effect of the high molecular weight (Mn = 3400) poly(ethylene glycol) (PEG) blended in the films of PHBHx with different ratios of PEG was investigated using chemical FTIR imaging. Chemical IR images and FTIR spectra measured with increasing temperature revealed that PEG plays an important role in changing the kinetics of PHBHx crystallization. In addition, two-dimensional correlation spectra clearly showed that thermal properties of PHBHx/PEG blend film changed when the blending ratio of PHBHx/PEG were 60/40 and 50/50. Consequently, PEG leads to changes in the thermal behavior of PHBHx copolymers. View Full-Text
Keywords: biodegradable polymer; IR imaging; 2D-COS; blend biodegradable polymer; IR imaging; 2D-COS; blend
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Park, Y.; Jin, S.; Park, Y.; Kim, S.M.; Noda, I.; Chae, B.; Jung, Y.M. Studies on Chemical IR Images of Poly(hydroxybutyrate–co–hydroxyhexanoate)/Poly(ethylene glycol) Blends and Two-Dimensional Correlation Spectroscopy. Polymers 2019, 11, 507.

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