Spectroscopic analysis with piecewise quantification model for accurate PET/cotton blend ratio determination.

Area of Science:

• Textile Science
• Analytical Chemistry
• Spectroscopy

Background:

• Accurate qualitative and quantitative analysis of polyethylene terephthalate (PET)/cotton blended textiles is crucial for production, trade, and research.
• Existing methods may lack the precision or efficiency required for comprehensive textile analysis.

Purpose of the Study:

• To develop and validate an integrated Raman and infrared spectroscopy approach for analyzing PET/cotton blended textiles.
• To establish a segmented quantitative model for determining the precise blend ratios.
• To assess the accuracy and reliability of the proposed spectroscopic method.

Main Methods:

• Innovative integration of Raman and infrared spectroscopy.
• Development of a segmented quantitative model utilizing characteristic peak ratios.
• Evaluation of measurement accuracy using coefficient of determination (R²), mean relative error (MRE), root mean square error (RMSE), and principal component analysis (PCA).

Main Results:

• The combined spectroscopy method achieved 90% quantitative accuracy and 100% qualitative accuracy for commercial PET/cotton blended fabrics.
• Mean relative errors (MREs) for characteristic peak ratios were as low as 2.34%.
• Root mean square errors (RMSEs) demonstrated the model's precision in blend ratio determination.

Conclusions:

• The integrated Raman and infrared spectroscopy method offers a robust and efficient technique for analyzing PET/cotton blends.
• This approach provides a foundation for rapid, non-destructive analytical methods in the textile industry.
• The study highlights the potential of spectroscopic techniques for quality control and material characterization in textiles.