醋酸纤维素化学结构对反渗透膜性能的影响

Effect of Chemical Structure of Cellulose Acetate on Properties of Reverse Osmosis Memberane

由于纤维素化学结构的特殊性，不同工艺条件制备的醋酸纤维素，即使平均聚合度和酯化度相同的成品，因其乙酰基和羟基在纤维素大分子及基环中分布均一性的差异，会导致所铸反渗透膜水通量和脱盐率的不同。

Cellulose acetate prepared in different technological conditions will lead to difference between water flux and desalination rate of its prepared reverse osmosis membrane even if the average degrees of polymerization and esterification of different cellulose acetates are sarne because of particularity of chemical structure of cellulose and difference of distribution homegeneity of acetyl group and hydroxy group in both cellulose macromolecule and its basic rings.