溶解-再生纤维素膜及其分离研究进展

Research Advances of Cellulose Membrane from Dissolution and Its Separation Performance

纤维素作为自然界中储量最大的天然高分子化合物,具有价格便宜、无毒、无污染和良好的生物可降解性等优点,通过溶解再生的方法制备的纤维素膜亲水性好、渗透性高、热稳定性高和耐污性强,在化工分离领域受到广泛关注。本文首先概述了纤维素溶解体系的发展近况,之后重点对通过直接溶解的方法制备的再生纤维素膜在水相有机物分离、离子分离和气体分离方面的研究进行了总结,并对今后的发展方向进行了展望。

Cellulose,the most abundant natural renewable resources on the earth,has the advantage of being cheaper, non-toxic,non-polluted and good biodegradable.Dissolve-regenerated cellulose membranes have received great attention in the field of chemical separation due to its high hydrophilicity,high thermal stability,high permeability and high pollution resistance.This paper introduces the novel dissolving system and the newest research of regenerated cellulose membranes on separation of organic or ion in aqueous phase and gas separation.Finally,a prospect on the future trends of regenerated membranes is proposed.