Isothermal crystallization of poly(3-hydroxybutyrate) studied by terahertz two-dimensional correlation spectroscopy

• DOI: 10.1063/1.3673847
• Publication Date: 2012-01-06T12:48:32Z
• Authors: Hiromichi Hoshina; Shinya Ishii; Yusuke Morisawa; Harumi Sato; Isao Noda; Yukihiro Ozaki; Chiko Otani
• Keywords: Isothermal process

The isothermal crystallization of poly(3-hydroxybutylate) (PHB) was studied by monitoring the temporal evolution terahertz absorption spectra in conjunction with spectral analysis using two-dimensional correlation spectroscopy. Correlation between peaks and sequential order changes intensity extracted from synchronous asynchronous plots indicated that PHB at 90 °C is a two step process, which C-H···O=C hydrogen bonds are initially formed before well-defined crystal structures established.