| 多孔性再生纤维素磁性微球的制备及性质 |
| |
| 引用本文： | 谷军,吴伟兵,王飞,龚木荣,景宜,戴红旗.多孔性再生纤维素磁性微球的制备及性质[J].南京林业大学学报(自然科学版),2012,36(3):111-114. |
| |
| 作者姓名： | 谷军 吴伟兵 王飞 龚木荣 景宜 戴红旗 |
| |
| 作者单位： | 1. 南京林业大学,江苏省制浆造纸科学与技术重点实验室,江苏 南京210037
2. 南京林业大学,江苏省制浆造纸科学与技术重点实验室,江苏 南京210037;华南理工大学,制浆造纸工程国家重点实验室,广东广州510640 |
| |
| 基金项目： | 江苏省高校自然科学基础研究项目，华南理工大学制浆造纸工程国家重点实验室开放基金，中国博士后科学基金第49批面上项目 |
| |
| 摘 要： | 利用绿色环保的碱-尿素-水溶剂体系制备纤维素溶液,采用反相悬浮法制备纤维素微球,并通过原位复合法工艺对纤维素微球进行纳米磁性功能化负载。结果表明,随着油水比不断增大,微球粒径逐渐减小,制备的再生纤维素微球比表面积超过30 m2/g,孔度超过90%,吸水性强,含水率超过85%。通过FTIR、XRD和SEM研究发现原位复合法可成功地生成Fe3O4纳米粒子,并在纤维素微球中形成有效负载,且制备的纤维复合微球保留了良好的球形结构和多孔性,并具有超顺磁性。
|
| 关 键 词： | 纤维素微球 多孔性 超顺磁性 原位复合法 |
Preparation and properties analysis of porous magnetic microspheres from regenerated cellulose |
| |
| GU Jun
,
WU Weibing
,
WANG Fei
,
GONG Murong
,
JING Yi
,
DAI Hongqi.Preparation and properties analysis of porous magnetic microspheres from regenerated cellulose[J].Journal of Nanjing Forestry University(Natural Sciences ),2012,36(3):111-114. |
| |
| Authors: | GU Jun WU Weibing WANG Fei GONG Murong JING Yi DAI Hongqi |
| |
| Institution: | 1(1.Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology,Nanjing Forestry University,Nanjing 210037, China;2.State Key Lab of Pulp & Paper Engineering,South China University of Technology,Guangzhou 510640,China) |
| |
| Abstract: | The natural cellulose now has become one of the research hotspots in the water treatment research field for its excellent performance.Natural cellulose was directly dissolved in environmental-friendly alkali/carbamide/water solvent system.Reversed-phase suspension technique was used to regenerate cellulose microspheres,they were further magnetically functionalized through in-situ synthesis method.The results showed that there was a decrease in the diameters of the cellulose microspheres with an increase of the oil/water ratio.The prepared cellulose microspheres had large specific surface area(>30 m2/g),good porosity(>90 %),and high water content(>85 %).Based on the results of FTIR,XRD and SEM,Fe3O4 nanoparticles were successfully formed and loaded in the cellulose microspheres.The cellulose composites preserved good orbicular shape,porosity and superparamagnetism.This type of cellulose microspheres material possessed potential application in the water treatment field. |
| |
| Keywords: | cellulose microspheres porous structure superparamagnetism in-situ synthesis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
