Water diffusion and sorption-induced swelling as a function of temperature and ethylene content in ethylene-vinyl alcohol copolymers as determined by attenuated total reflection fourier transform infrared spectroscopy.
作者： D. Cava , C. Sammon , J. M. Lagaron
DOI: 10.1366/000370206779321382
关键词:
摘要: Attenuated total reflection Fourier transform infrared (ATR-FT-IR) spectroscopy has been advantageously used to carry out a simultaneous study of the effect temperature on sorption, diffusion, swelling rate, and rate factor ethylene-vinyl alcohol (EVOH) cast films with three different ethylene contents (29, 38, 44 mol % ethylene). While sorption levels at equilibrium did not appear be affected by in range studied, increasing content was seen largely decrease sorption-induced swelling. It should noted that all samples showed significant (∼60% copolymer lowest content), suggesting obtained solution-casting generate polymer morphologies are far more prone uptake water than typical melt-extruded ones. also observed led reduction
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