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- W2132450054 abstract "Summary: FT-IR microspectroscopy was used to map the compositional distribution along the cross-section on the gradient films of fully biodegradable poly(ethylene oxide) (PEO)/poly(3-hydroxybutyrate) (PHB) blend system. First, a linear fitting line for a calibration, related the absorbance ratio of two peaks to the fraction of PEO in the blend, was established. During linear fitting, a new equation was deduced and the influence of the different crystallinities on the absorption peaks at the wavenumber 962 and 1 342 cm−1 for PEO, 980 and 1 380 cm−1 for PHB, have been taken into account. For the PEO/PHB blend system, it was found that the crystallinity has little effect on the absorbance ratios of A962/A1 380 and A1 342/A1 380. Based on the results from the linear fitting, which comes from the relation of the absorbance ratios of A962/A1 380 or A1 342/A1 380 and the combination of the weight fraction of PEO (WPEO/(1 − WPEO)), the compositional distributions on the cross-section of three kinds of compositional gradient films of the PEO/PHB blend prepared by different technologies have been successfully estimated. Furthermore, the better method for preparing the PEO/PHB blend film with compositional gradient was found based on the result of the quantitative analysis of the compositional distribution. The compositional distribution along the cross-section of the gradient films based on PEO/PHB binary system for the Type I gradient film." @default.
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- W2132450054 date "2005-04-22" @default.
- W2132450054 modified "2023-09-27" @default.
- W2132450054 title "Quantitative Analysis of Compositional Distribution in Biodegradable Poly(ethylene oxide)/Poly(3-hydroxybutyrate) Blend Film with Compositional Gradient by FT-IR Microspectroscopy" @default.
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- W2132450054 doi "https://doi.org/10.1002/macp.200400531" @default.
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