研究目的
To analyze the hydrogen bond network of cellulose by comparing the 2nd derivative infrared spectra of alfa fiber treated with different concentrations of thymol.
研究成果
The 2nd derivative infrared spectrum is a useful method for identifying changes in the cellulosic supramolecular structure. The study revealed an increase in band intensity related to both intermolecular and intramolecular hydrogen bonds and a decrease in bands related to free hydroxyl groups in thymol-treated alfa fibers.
研究不足
The study focuses on the hydrogen bond network of cellulose in alfa fibers treated with thymol, and the findings may not be directly applicable to other cellulosic materials or treatments. The interpretation of infrared band assignments may also have uncertainties.
1：Experimental Design and Method Selection:
The study used FTIR spectroscopy to analyze the hydrogen bond network of cellulose in alfa fibers treated with thymol. The 2nd derivative infrared spectrum was employed to identify changes in the cellulosic supramolecular structure.
2：Sample Selection and Data Sources:
Alfa fibers were treated with different concentrations of thymol (2, 4, 6, 8, and 10% w/w) at 50°C for varying durations (2 min and 30 min).
3：List of Experimental Equipment and Materials:
A spectrophotometer of type PerkinElmer UATR with an attenuated total reflectance (ATR) attachment was used for infrared spectra analysis. Thymol was purchased from Sigma-Aldrich.
4：Experimental Procedures and Operational Workflow:
Fibers were dried at 40°C for 60 min after treatment. Infrared spectra were recorded in the range of 4000-500 cm-1 with a resolution of 2 cm-
5：Data Analysis Methods:
The 2nd derivative spectra were generated using software resolution program (Origin 6.0) to analyze changes in the hydrogen bond network.
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