Summary
Methylene chloride transport in copolymers of poly(2-hydroxyethyl methacrylate-co-N-vinyl-2-pyrrolidone) was studied at 25°C using Raman microprobe spectroscopy. It is shown that the abrupt change of the penetrant concentration at the rubbery/glassy interface during swelling can be detected and followed to obtain useful information about the penetrant transport mechanisms in these copolymers.
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Klier, J., Peppas, N.A. Anomalous penetrant transport in glassy polymers. Polymer Bulletin 16, 359–362 (1986). https://doi.org/10.1007/BF00255009
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DOI: https://doi.org/10.1007/BF00255009