Rapid and non-destructive quantification of free phenol in phthalonitrile resin using NIR spectroscopy and chemometrics

Key Points

• The analysis quantifies free phenol content in phthalonitrile resin with a high degree of accuracy.
• Using NIR spectroscopy, the method shows a quantification precision within 0.05 mg/mL across samples.
• This method employs chemometric techniques to process the spectral data effectively and efficiently.
• Such non-destructive testing may enable better quality control in polymer manufacturing processes.