| 周冠成,谷 军,吴伟兵,徐朝阳,龚木荣,戴红旗.高压静电喷雾法制备再生纤维素磁性微球[J].中国造纸学报,2014,29(3):27-31 |
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| 高压静电喷雾法制备再生纤维素磁性微球 |
| Preparation of Magnetic Regenerated Cellulose Microspheres via High voltage Electrospraying Method |
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| DOI：10.11981/j.issn.1000-6842.2014.03.27 |
| 中文关键词: 碱脲体系 高压静电喷雾 再生纤维素磁性微球 超顺磁性 |
| Key Words:NaOH/Urea/H2O solvent system high voltage electrospraying magnetic cellulose microspheres super paramagnetism |
| 基金项目:国家自然科学基金资助项目（No. 31200453，31300483）；江苏省自然科学基金（No. BK20130971）；江苏高校优势学科建设工程资助项目。 |
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| 中文摘要: |
| 以Fe3O4纳米颗粒与纤维素碱脲溶液的混合液为原料，利用高压静电喷雾法制备了再生纤维素磁性微球（M RCMS）。探讨了Fe3O4负载量对M RCMS物理结构的影响，并用扫描电镜（SEM）、X射线衍射仪（XRD）、热重分析仪（TGA）、振动样品磁强计（VSM）和透射电镜（TEM）对产品进行表征。结果表明，随Fe3O4负载量的增加，高压静电喷雾过程中M RCMS的成球性、均一性、保水能力和孔隙结构变差，比表面积增大，但Fe3O4晶体结构和粒径未发生变化，M RCMS热稳定性良好并具备超顺磁性。 |
| Abstract: |
| Magnetic regenerated cellulose microspheres(M RCMS) were obtained from a mixture of Fe3O4 and cellulose in NaOH/urea aqueous solution via high voltage electrospraying method. The influences of the loading amounts of Fe3O4 on the process of electrospraying as well as the morphology and physical structure of M RCMS were studied. The products were investigated by means of scanning electron microscope(SEM), X ray diffractometer(XRD), thermogravimetric analysis(TGA), vibrating sample magnetometer(VSM) and transmission electron microscope(TEM). The balling ability, uniformity, water retention and pore structure of M RCMS became worse with the increasing of the amount of Fe3O4, but the specific surface area of M RCMS was larger. The crystal structure of Fe3O4 showed no changes during the process of loading. M RCMS had good thermal stability and super paramagnetism. |
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