PET基磁性膜材料的制备与性能表征  

Preparation and Capability of PET-based Magnetic Film Material

作　　者：严长浩[1] 高坡[1] 王志峰[1] 孙海平[1] 邱关明[2] 张明[1] 

机构地区：[1]江苏省环境材料与环境工程重点实验室,江苏扬州225002 [2]南京工业大学材料科学与工程学院

出　　处：《精细化工》2008年第1期19-22,共4页Fine Chemicals

基　　金：江苏省物理化学重点学科建设基金资助(YPC200604)~~

摘　　要：用共沉淀法制备出具有磁性的Fe3O4纳米粒子水溶液。红外光谱和XRD表明,纳米粒子是Fe3O4且其粒径在15 nm左右。通过磁滞回线得到纳米粒子比饱和磁化强度σr=56.58 emu/g。对PET薄膜进行预处理和阴离子化后,在PET表面交替吸附聚电解质聚二甲基二烯丙基氯化铵(PDDA)和纳米粒子水溶液,由于PDDA的存在,Fe3O4纳米粒子能均匀地被吸附在PET表面,形成PET基磁性膜材料,且吸附的强度较强。该材料的矫顽力为41.11 Oe,剩余磁化强度为0.66 emu,与Fe3O4纳米粒子一样,具有超顺磁性。Magnetic nanoparticles（ Fe3O4 ） were synthesized by corecipitation method and diluted into aqueous solution. FT-IR and XRD show that the nanoparticles are Fe3O4 about 15 nm in size. Specificsaturated magnetism of the magnetic nanoparticles is 56.58 emu/g according to the magnetic hysteresis loop. Poly （ethylene terephthalate） （PET） films were pretreated and anionized, then the magnetic film materials were successfully prepared by adsorbing poly （ dimethyldiallylammonium chloride ） （ PDDA ） and magenetic nanoparticals aqueous solution alternatively on the PET films. Because of the polyelectrolyte PDDA,magnetic nanoparticles Fe304 are equally and strongly adsorbed. This magnetic film materials presents coercivity 41.11 （ Oe ）, residual magnetization （ 0.66 emu ）, and the same super-paramagnetism as magnetite nanoparticles.

关 键 词：磁性膜材料 自组装 超顺磁性 矫顽力 剩余磁化强度 

分 类 号：TM27[一般工业技术—材料科学与工程]