Characterization of cellulose I/II hybrid fibers isolated from energycane bagasse during the delignification process: Morphology, crystallinity and percentage estimation.
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.
School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA.
Yiying
Y
Yue
College of Material Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
Jingquan
J
Han
Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China. Electronic address: guangpingh@hotmail.com.
Guangping
G
Han
Key Laboratory of New Materials and Facilities for Rural Renewable Energy (Ministry of Agriculture), Henan Agricultural University, Zhengzhou 45002, Henan, China.
Quanguo
Q
Zhang
Southern Regional Research Center, United States Department of Agriculture, New Orleans, LA 70124, USA.
Alfred D
AD
French
School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA. Electronic address: wuqing@lsu.edu.
Qinglin
Q
Wu
D002482:Cellulose / Q000737:chemistry*; D002712:Chlorides / Q000737:chemistry; D006860:Hydrogen Bonding; D008031:Lignin / Q000032:analysis / Q000737:chemistry* / Q000302:isolation & purification*; D031786:Saccharum / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry; D013997:Time Factors
D002712:Chlorides; D012965:Sodium Chloride; D002482:Cellulose; D008031:Lignin; C027433:bagasse; C001599:chlorite
Cellulose; Crystallinity; Defibrillation; Hybrid fibers; Transformation