论文部分内容阅读
随着超滤技术应用范围的不断开拓和新技术工业领域的相继出现,极待开发机械强度好并具有优良的耐温性、耐生物侵蚀性、耐酸碱和耐有机溶剂性等高性能的超滤膜材料,以满足在苛刻条件下的分离、提纯、浓缩与富集以及高温灭菌过程的需要。多年来,国内外学者陆续将多种合成高分子材料用于超滤分离技术中,特别是杂环高分子如聚酰亚胺等,其优良的机械性能、耐温性和耐生物侵蚀性颇引人注目。但是,在已开发的合成高分子超滤膜材料中,由于某些分子的主链上含有—CN、—CONH—、—COOR、—CH_2O—、
With the continuous development of the application of ultrafiltration technology and the emergence of new technologies in the field of industry, to be developed to have good mechanical strength and excellent temperature resistance, bio-corrosion resistance, acid and alkali resistance and organic solvent resistance and other high performance UF membrane materials to meet the needs of separation, purification, concentration and enrichment, and high temperature sterilization processes under harsh conditions. Over the years, domestic and foreign scholars have been a variety of synthetic polymer materials used in ultrafiltration separation technology, especially heterocyclic polymers such as polyimide, its excellent mechanical properties, temperature resistance and bio-erodible quite striking. However, in the developed synthetic polymer ultrafiltration membrane materials, some molecules contain -CN, -CONH-, -COOR, -CH 2 O-,