| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 680889 | Bioresource Technology | 2014 | 4 Pages |
•Spatial structure change of corn stover is not uniform with time during alkali–biological pretreatment process.•Crystalline areas and amorphous areas showed periodic changes.•Dynamic periodic variation of crystallinity of corn stover was observed.•Dynamic periodic variation of microcrystalline size of cellulose was observed.
Dynamic variation in the spatial structure of corn stover during alkali and biological co-pretreatment was investigated by X-ray diffraction. The result for crystallinity and microcrystalline size of cellulose showed periodic changes during the pretreatment process. The dominant destruction periods of crystalline areas were mainly located at 3–5 d and 7–17 d, and prevailing destroyed amorphous areas mainly occurred at 0–2 d and 5–7 d. On day 7, the relative crystallinity and microcrystalline size reached 52.81% and 8.56 nm, respectively, which were the maximum and minimum values during the whole co-pretreatment. The results indicated that spatial structure change was not uniform with pretreatment time, and this was contributed to explore the vital time point of destruction during the alkali–biological pretreatment.
