INFLUENCE OF PREPARATION CONDITIONS OF COMPOSITE ULTRAFILTRATION MEMBRANE
Vũ Quỳnh Thương
Bùi Duy Cam
Lê Viết Kim Ba
Trần Thị Dung
Phạm Thị Phượng
Ngô Hồng Ánh Thu
Đặng Thị Hường
Abstract
Composite membrane has been fabricated from cellulose nitrate using cellulose or polyeste as a supporting material. The sublayer of membrane is made of cellulose nitrate and the toplayer is formed from cellulose nitrate. Influence of preparation conditions on characteristics of each layer has been investigated in terms of casting characteristics of material, membrane thickness, solution composition and evaporation time of solvent. The optimum conditions for each layer have been chosen for preparation of composite membrane, which could have a good separation property in both flux of filtrate and rejection for yeast in beer solution after fermentation process
