School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA.
College of Material Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
Carbohydr Polym. 2015 Nov 20;133:438-47. doi: 10.1016/j.carbpol.2015.07.058. Epub 2015 Jul 23.
Cellulose I, cellulose II and cellulose I/II hybrid fibers were prepared from energycane bagasse using NaOH and NaClO2 treatments. The definitive defibrillation effect with an average width of 12±5μm was observed for the fibers treated with 20wt% NaOH for 10h and NaClO2 for 2h. The ribbon shaped cellulose I fibers were converted to a swollen state with a rougher surface by 20wt% NaOH treatment for 10h. The percentage of cellulose I decreased from 100% to 5%, and the corresponding CI values increased from 58.2% to 68.8% during the conversion from cellulose I to II. After further NaClO2 treatment, the CI values were decreased because of partial destruction of hydrogen bond network. XRD, NMR and FTIR results present the same trend in the degree of crystallization for all the samples.
采用 NaOH 和 NaClO2 处理从甘蔗渣中制备纤维素 I、纤维素 II 和纤维素 I/II 混合纤维。用 20wt%NaOH 处理 10h 和 NaClO2 处理 2h 的纤维表现出明确的解纤效果，平均宽度为 12±5μm。20wt%NaOH 处理 10h 将带状纤维素 I 纤维转化为溶胀状态，表面变得粗糙。在从纤维素 I 向纤维素 II 的转化过程中，纤维素 I 的百分比从 100%下降到 5%，相应的 CI 值从 58.2%增加到 68.8%。进一步的 NaClO2 处理后，由于氢键网络的部分破坏，CI 值降低。XRD、NMR 和 FTIR 结果表明所有样品的结晶度趋势相同。
