林业工程学报2017，Vol.2Issue(2)：101-106,6.DOI:10.13360/j.issn.2096-1359.2017.02.017
漂白竹浆疏水改性纳米纤丝化纤维素的制备和表征
Preparation and characterization of hydrophobic nanofibrillated cellulose fiber from bleached bamboo pulp
摘要
Abstract
Nanofibrillated cellulose can be chemically modified for special properties. Hydrophobic nanofibrillated cellu-lose ( m-NFC) was prepared by pretreating bleached bamboo pulp using butyl chloride as a modification reagent and DMF as a dispersant in planetary ball mill for a period of time. Subsequently, the obtained microfiber with surface substitution degree of 2. 07 was passed through a high-pressure homogenizer. The modified NFC was characterized with atomic force microscopy ( AFM) , Fourier transform infrared spectroscopy ( FTIR ) and X-ray diffraction ( XRD) . The m-NFC obtained from 20 passed of the homogenizer with maximum pressure of 80 MPa had an average length of 316.9 nm and average diameters between 25 nm and 80 nm. The results of XRD showed that the degrees of crystallinity of m-NFC were changed as a result of the severe mechanical treatment. The m-NFC showed good disper-sion stability in a low polar solvent of acetone. Hydrophobic modification of nanofibrillated cellulose has great devel-opment potential in hydrophobic substrate material.关键词
纳米纤丝化纤维素/纳米纤丝化纤维素改性/取代度/分散性Key words
nanofibrillated cellulose fiber/nanofibrillated cellulose fiber modification/degree of substitution/dispersion分类
化学化工引用本文复制引用
周静,沈葵忠,房桂干,李漫,林艳,邓拥军..漂白竹浆疏水改性纳米纤丝化纤维素的制备和表征[J].林业工程学报,2017,2(2):101-106,6.基金项目
"十二五"国家科技支撑计划项目(2014BAD02B02) （2014BAD02B02）
江苏省生物质能源与材料重点实验室基金(JSBEM-S-201510). （JSBEM-S-201510）
