STUDY ON THE EFFECT OF SPINNING CONDITIONS AND SURFACE-TREATMENT ON THE GEOMETRY AND PERFORMANCE OF POLYMERIC HOLLOW-FIBER MEMBRANES

被引:25
作者
MOK, S
WORSFOLD, DJ
FOUDA, AE
MATSUURA, T
WANG, S
CHAN, K
机构
[1] NATL RES COUNCIL CANADA,INST ENVIRONM CHEM,OTTAWA,ON K1A 0R6,CANADA
[2] ADV MEMBRANES INC,GLOUCESTER,ON K1B 3L7,CANADA
关键词
HOLLOW-FIBER MEMBRANES; PERFORMANCE; SURFACE TREATMENT; SPINNING CONDITIONS;
D O I
10.1016/0376-7388(94)00134-K
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Hollow-fibre membranes were prepared by the wet-dry spinning technique from polyether sulfone (PES). The effect of spinning conditions such as the flow-rate of the internal coagulant and the flow-rate, composition and temperature of the polymer solution on the geometry and performance of hollow fibres was studied. In particular, five different ratios of pore former/polymer covering the range 0.2-1.0 were investigated while the polymer content was kept constant. Since the viscosity of the spinning dope affects the morphology of the hollow-fibre membrane, hollow fibres were prepared at different temperatures of the spinning dope from 25 to 60 degrees. By scanning electron microscopy (SEM) two layers sandwiching a finger-like cavity structure were observed. Also, the surface on the bore side of the hollow fibre was modified by grafting polyethylene glycol (PEG) with gamma-ray irradiation to improve the ultrafiltration performance.
引用
收藏
页码:183 / 192
页数:10
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