期刊
CARBOHYDRATE POLYMERS
卷 84, 期 1, 页码 262-267出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.11.032
关键词
Oil palm empty fruit bunch; Microcrystalline cellulose; Cellulose phosphate; Phosphorylation; Biopolymers
资金
- Universiti Sains Malaysia through Research University [1001/PTEKIND/8140151]
Phosphorylated cellulose is a biopolymer with potential use in biomaterials. The typical cellulosic raw materials used in its derivation are often wood-based. Nonetheless, cellulose can also be extracted and is readily available in large quantities from non-wood alternatives. One such viable source is empty fruit bunch fiber (OPEFB), a by-product of the oil palm industry. In this work, OPEFB cellulose phosphate (OPEFB-CP) gel was successfully synthesized from OPEFB microcrystalline cellulose using the H3PO4/P2O5/Et3PO4/hexanol procedure. The characterization of the OPEFB-CP was performed using EDX analysis, FTIR and CP/MAS C-13- and P-31-NMR spectroscopic analyses and provided clear evidence of successful phosphorylation. Through CP/MAS C-13 NMR, the distribution of the phosphate moiety among the three OH groups in the glucose residues was shown to be preferably located at the C6 position, resulting in a 53% reduction in crystallinity. Thermal stability of the OPEFB-MCC decreased upon phosphorylation. (C) 2010 Elsevier Ltd. All rights reserved.
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