生物质化学工程2016，Vol.50Issue(5)：1-6,6.DOI:10.3969/j.issn.1673-5854.2016.05.001
NaOH浓度对纳米Fe3O4/纤维素复合膜结构和性能的影响
Effects of NaOH Concentration on Structure and P roperties of Nano-Fe3O4/Cellulose Composite Membrane
摘要
Abstract
Using NMMO-cellulose memberane as matrix and NaOH as precipitant, Fe3O4/cellulose composite membranes were prepared by in-situ co-precipitation method. The effects of NaOH concentration on the structure and properties of composite membranes were studied by scanning electron microscopy ( SEM ) , X-ray diffraction ( XRD ) , Fourier transform infrared spectrometer(FT-IR),thermal gravimetric analyzer(TGA) and vibration sample magnetometer(VSM).Results showed that the spherical magnetic Fe3O4 nanopartieles were dispersed uniformly and immobilized in the cellulose membranes, and the crystallite size of Fe3O4 on the surface of composite membrane increased with NaOH concentration increasing. FT-IR spectra showed that there were good interactions between cellulose and Fe3O4 in the membranes. The thermal stability of the composite membrane increased with the increase of NaOH concentration from 1. 0 mol/L to 3. 0 mol/L, and the residue rate of composite membrane increased from 19. 3% to 23. 8%. VSM showed that Fe3O4/cellulose composite membranes showed good superparamagnetic property,and magnetic properties of the composite membrane improved by increasing the NaOH concentration.关键词
纤维素膜/原位共沉淀法/结构性能Key words
cellulose memberane/in-situ co-precipitation method/structure and properties分类
化学化工引用本文复制引用
张晓君,马晓军..NaOH浓度对纳米Fe3O4/纤维素复合膜结构和性能的影响[J].生物质化学工程,2016,50(5):1-6,6.基金项目
国家自然科学基金资助项目(31270607) （31270607）
