The structures of pamps molecule chains change along with the changes of solution environments ( ph and ionic strength ( i ) ) and thus affect the water flux and selective permeability of the composite membrane Pamps分子鏈的構象隨溶液環(huán)境( ph值、離子強度等)的變化而變化,從而影響膜的滲透通量和選擇透過能力。