Issue 5, 2003
From the journal:

Green Chemistry

Thermal and infrared spectroscopic studies on hydrogen-bonding interaction of biodegradable poly(3-hydroxybutyrate)s with natural polyphenol catechin†

Bo Zhu,a   Jianchun Li,a   Yong He,a   Yasushi Osanai,b   Shuichi Matsumurab  and  Yoshio Inoue*a  

* Corresponding authors

a Department of Biomolecular Engineering, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan
E-mail: yinoue@bio.titech.ac.jp
Fax: +81-45-924-5827
Tel: +81-45-924-5794

b Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

Abstract

Thermal and infrared spectroscopic studies were performed on the hydrogen-bonding interaction in the blends of biodegradable atactic, highly syndiotactic and isotactic poly(3-hydroxybutyrate)s with catechin. From the analysis of Fourier-transform infrared spectra, it was found that the crystalline phase could greatly restrain the formation of inter-associated hydrogen-bonds. Moreover, the effect of the steric configuration on the formation of hydrogen-bonds was testified, and the results suggested that the higher tacticity benefited the formation of hydrogen-bonds, although its effect on the strength of hydrogen-bonds was small. The strong hydrogen-bonds between the two components in the blends promised their miscibility, which could be testified by differential scanning calorimetry measurements. All the poly(3-hydroxybutyrate)–catechin blends showed one glass transition temperature over the whole range of blend compositions and it increased rapidly with catechin content, indicating that poly(3-hydroxybutyrate)s and catechin are miscible in the amorphous phase.

Graphical abstract: Thermal and infrared spectroscopic studies on hydrogen-bonding interaction of biodegradable poly(3-hydroxybutyrate)s with natural polyphenol catechin

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Article information

DOI
https://doi.org/10.1039/B304708C
Article type
Paper
Submitted
29 Apr 2003
First published
04 Aug 2003

Green Chem., 2003,5, 580-586

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Thermal and infrared spectroscopic studies on hydrogen-bonding interaction of biodegradable poly(3-hydroxybutyrate)s with natural polyphenol catechin

B. Zhu, J. Li, Y. He, Y. Osanai, S. Matsumura and Y. Inoue, Green Chem., 2003, 5, 580 DOI: 10.1039/B304708C

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