【摘要】 采用高取代氰乙基纤维素(HCEC)作为膜材料进行了一系列的合成条件试验,对产物的取代度、特性粘度以及膜的反渗透性能也进行了测试,并用红外光谱图及X—射线衍射表征。实验表明,HCEC是一种较理想的膜材料,可很好地溶于丙酮,并易成膜。用它制成的反渗透膜除具有较好的反渗透性能外,还具有耐酸、碱水解和抗微生物分解性能。此外,可以按一定比例与CA共混,所制成的膜不仅具有优异的反渗透性能,其抗微生物分解性能以及透水量亦都优于CA膜。电镜图显示表明三种膜的内部结构有明显差异。更多还原

【Abstract】 This paper mainly reports a series of experiments of synthetical condition of HCEC, and the suitable manufacture procedure for making HCEC membrane materials has been obtained. The degree of substitute and intrinsic viscosity of HCEC, the RO performance characterization of HCEC membrane, IR spectrum and X-rayspectrum of HCEC had been measured. The experiments has indicated that HCEC is a good membrane material. It can dissolve in many polar solvents. The RO performance characterition of HCEC membrane is satisfactory, as well as, it is much better than CA membrane in microbial decomposition, acid and basicity hydrolysic. HCEC can be blend with CA completely in a certain proposition. The membrane of HCEC-CA has higher flux and salt rejection than CA, as well as, it can resist microbile decomposition, The cross-section of three membranes by SEM photographare are shown apparently differente.更多还原