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The crystallinity index of raw (SHI-R) and treated hemp shives (SHI-W, SHI-OH, SHI-C and SHI-H) obtained using ATR-FTIR spectroscopy. The ratios of the peaks at 1421 and 893, 1375 and 2898 and 1375 and 660 cm−1 were used to measure relative cellulose crystallinity.
| Sample | Absorbance Ratio (FTIR Band, cm−1) | ||
|---|---|---|---|
| 1421/893 | 1375/2898 | 1375/660 | |
| SHI-R | 0.60 | 2.54 | 0.40 |
| SHI-W | 0.63 | 2.42 | 0.43 |
| SHI-OH | 0.58 | 1.84 | 0.33 |
| SHI-C | 0.65 | 2.28 | 0.40 |
| SHI-H | 0.56 | 2.25 | 0.40 |
