||In our previously work[1,2], biodegradable poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoates]/poly(ethylene glycol) (PHBHx/PEG) blend films have been explore influence of PEG length and contents on PHBHx crystallization. In case of PEG having higher weight (Mn=3400), PHBHx and PEG were not fully miscible indicating that can form the domain. Therefore, to investigate relationship between the morphology and chemical information in PHBHx/PEG blend film, IR imaging was performed in this study. The details of this study will be discussed in this presentation.  Y. Chen, Y. Park, C. Yang, I. Noda, Y.M. Jung, Polymer 120 (2017) 59–67.  Y. Chen, Y. Park, I. Noda, Y.M. Jung, J. Mol. Struct. 1124 (2016) 159–163.