Fiber Lumen Loading of Fe3O4 for Magnetic Paper
In this study,a magnetic paper was prepared by loading magnetic particles(Fe3O4)into the fiber lumen.Fe3O4 particles were introduced into the lumen of fibers while leaving the exterior surface free of filler particles.The Fe3O4 particles in the fiber lumen were protected by fibers wall from dislodgement during washing and papermaking.The Fe3O4 particles located outside the lumen were removed by washing with tap water before the handsheet making.The factors affecting the lumen-loading of softwood bleached kraft pulp were investigated.The optimized conditions were: 29°SR beating degree of the pulp,5mg/g polyethylenimine(PEI),0.075g/1 A12(SO4)3.and 2500r/min mixing speed.The loading degree could be increased by increasing the mass ratio of Fe3O4 to pulp and the treating time.The strength properties were affected at higher loading levels due to absorption of Fe3O4 particles on fiber surface.The magnetic properties were measured using a computerized Vibrating Sample Magnetometer(VSM)for pulp samples(3-5mg).Results show that the remanent magnetization(Mr)and the coercive force(Hc)were affected by the loading levels and the particle size of Fe3O4,respectively.The Fe3O4 particles on fiber surface were examined with scanning electron microscopy.
lumen-loading magnetic paper ferroferric oxide loading capacity magnetic properties
XIN YANG ZHU LONG HAIFENG LI
Key Laboratory of Science and Technology of Eco-textile,Ministry of Education,Jiangnan University,Wuxi,Jiangsu,214122,China
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
1045-1048
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）