摘要
Hydrophilic surface modification of polysulfone hollow fiber membrane was performed by acrylic acid treatment.Stannic chloride was selected as the proper catalyst, and phosphoric acid as the co-catalyst.The modification conditions, such as the ratio of the reagents (acrylic acid∶catalyst=1∶0.05), temperature (30℃) and reaction time (60 min), were optimized based on the contact angle measurements.The grafting of carboxyl group to the membrane surface was confirmed by IR spectrum and wettability analysis, and no degradation of the modified membrane skin or framework was observed with scanning electron microscopy.The experimental results of filtrating bovine serum albumin solutions indicated that the property of resisting protein adsorption on the membrane surface for the modified membrane was much better than that for unmodified membrane.In the process of separating casein hydrolysates, the advantages of modified membrane were also shown by comparing the permeate flux and molecular mass distribution with those of unmodified membrane.
Hydrophilic surface modification of polysulfone hollow fiber membrane was performed by acrylic acid treatment. Stannic chloride was selected as the proper catalyst, and phosphoric acid as t.he cocatalyst. The modification conditions, such as the ratio of the reagents （acrylic acid ： catalyst= 1 ： 0.05）, temperature （30℃） and reaction time （60 min）, were optimized based on the contact angle measurements. The grafting of carboxyl group to the membrane surface was confirmed by IR spectrum and wettability analysis, and no degradation of the modified membrane skin or framework was observed with scanning electron microscopy. The experimental results of filtrating bovine serum albumin solutions indicated that the property of resisting protein adsorption on the membrane surface for the modified membrane was much better than that for unmodified membrane. In the process of separating casein hydrolysates, the advantages of modified membrane were also shown by comparing the permeate flux and molecular mass distribution with those of unmodified membrane.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2007年第6期1501-1506,共6页
CIESC Journal
基金
国家自然科学基金项目(20306023)
高校博士点基金项目(20050056061)。~~
关键词
丙烯酸
超滤
亲水聚砜膜
抗吸附
多肽分离
acrylic acid
ultra-filtration
hydrophilic polysulfone membrane
anti protein adsorption
peptide separation
