作　　者： ; ; ; ;

机构地区： 华南理工大学轻工与食品学院制浆造纸工程国家重点实验室

出　　处： 《中国造纸学报》 2006年第4期66-70,共5页

摘　　要： 以纤维素纤维为模板,采用原位复合方法制备磁性纳米复合纤维。对复合反应条件进行了初步研究,探讨了Fe2+浓度及反应温度、熟化时间、复合次数对复合反应的影响。研究表明适当提高Fe2+浓度及反应温度、增加复合次数和延长熟化时间有利于提高复合纤维的磁性粒子复合量,但过高的浓度和反应温度会导致粒子聚团。适宜的Fe2+浓度为0.054 mol/L,反应温度65℃,控制反应条件可进一步控制复合磁性粒子的尺寸;采用扫描电镜-能谱(SEM-EDXA)、傅里叶变换红外光谱(FT-IR)、超导量子磁强计(SQUID)等对复合纤维结构及性能进行表征,结果表明纤维素/磁性纳米复合材料具超顺磁性。 Cellulose/magnetic hanD-composites were prepared by in-situ process using cellulose fibers as template. The influences of compounding conditions on the composition msuhs were studied. The amount of the compounded magnetic particles depends on the composition conditions, such as Fe2＋ concentration, temperature, aging time, and repeat cycles. The optinml Fe2~ concentration is 0.054 mol/L and the tempreture is 65℃. The amount of ferrite particles compounded on the fibers.increases, and size and shape of the ferrite are optimized through reaction conditions control. The structure and the properties of the composite fibers and ferrite particles obtained were investigated by means of SEM-EDXA, FTLR, atomic adsorption spectrometry and superconducting quantum interference device （SQUID）. The ferrite particles＇ sizes are between 20 - 100 nan and the nanocomposite cellulose fibers are super-paramagnetic. The magetic nanocomposites prepared are useful in the field of magnetic-recording, anti-forge paper making and military application.

关 键 词： 纤维素 磁性纳米复合材料 原位复合 模板

领　　域： [轻工技术与工程]