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首页> 外文期刊>Journal of Polymer Science >Specific interchain interactions of poly(ethylene 2,5-furandicarboxylate) with polyglycolide acid blends and its effect on miscibility
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Specific interchain interactions of poly(ethylene 2,5-furandicarboxylate) with polyglycolide acid blends and its effect on miscibility

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Poly (ethylene 2,5-furan dicarboxylate) (PEF) with excellent physical properties is considered to be a perfect industrial alternative for PET. In this paper, a series of PEF/PGA blends with different mass ratios were prepared, and the miscibility and interchain-associated interactions of those blends were studied by differential scanning calorimetry, scanning electron microscopy, nuclear Magnetic Resonance Spectroscopy, FTIR spectroscopy, and wide-angle X-ray diffraction. Experiment results suggested that there are two specific interchain-associated interactions between PEF and PGA, which made those two components have good miscibility over the entire composition range and caused the T_gs of the blends slightly lower than the theoretical value calculated by FOX equation. After sufficiently isothermal crystallized at 160 ℃, the primary and secondary contribution of these two interchain-associated interactions between PEF and PGA in blends is reversed. In other words, the interchain-associated interactions composed of C O of PGA component and CH2 of PEF component is the primary role, the interchain-associated interactions composed of C O of PEF component and CH2 of PGA component is the secondary role before isothermal crystallization, after isothermal crystallization, which are reversed.

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