Preparation and characterization of cellulose-ZnO nanocomposite based on ionic liquid ([C4mim]Cl)
Preparation and characterization of cellulose-ZnO nanocomposite based on ionic liquid ([C4mim]Cl)
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DOI：
10.1007/s10570-012-9857-3
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发表时间：
2013-01
期刊：
影响因子：
5.7
通讯作者：
M. Bagheri;S. Rabieh
中科院分区：
文献类型：
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作者：
M. Bagheri;S. Rabieh
以离子液体氯化1-丁基-3-甲基咪唑（[C4 mim]Cl）为溶剂，微波辅助溶解纤维素，加入Zn（CH 3COO）2. 2 H2O和NaOH预混粉，制备纤维素-ZnO复合材料。采用X射线衍射、扫描电镜、紫外-可见光谱和热重分析等手段对纳米复合材料的表面形貌、光学性能和热稳定性进行了表征。XRD分析表明，ZnO在聚合物基体中具有纤锌矿结构。通过SEM观察到复合材料中存在纳米氧化锌和纤维素纤维。纳米复合材料中氧化锌的带边跃迁发生在比体相氧化锌更低的波长处。纳米复合材料的热稳定性低于再生纤维素，这是由于氧化锌纳米颗粒在纤维素基体中的催化行为。
Cellulose-ZnO composite was achieved by microwave assisted dissolution of cellulose in ionic liquid 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) followed by addition of premixed ground of Zn(CH3COO)2·2H2O and NaOH. Surface characterization, optical property and thermal stability of nanocomposite were determined by X-ray diffraction, scanning electron microscopy (SEM), UV–Vis spectroscopy and thermo gravimetric analysis. XRD patterns showed the ZnO in polymer matrix has the wurtzite structure. Presence of zinc oxide nanoparticles and cellulose fibers in the composites were observed by SEM. Band-edge transition of zinc oxide in the nanocomposite occurs in lower wavelength than bulk zinc oxide. Thermal stability of nanocomposite was lower than regenerated cellulose due to catalyst behavior of zinc oxide nanoparticles in cellulose matrix.