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Figure 4
Variation of absorbance peaks in the C=O stretching vibrational region of FTIR spectra for MEK-vapor-annealed PU 1180A: (a) experimental data with aging times from 1 to 30 d; (b) fitted peak areas of the free, disordered and ordered C=O stretching vibration bands.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 58| Part 2| April 2025| Pages 564-572
https://doi.org/10.1107/S1600576725001633
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