膜
二甲基乙酰胺
材料科学
聚乙二醇
化学工程
溶剂
毛细管作用
胶体
形态学(生物学)
体积流量
PEG比率
高分子化学
色谱法
化学
复合材料
有机化学
生物化学
经济
工程类
物理
生物
遗传学
量子力学
财务
作者
Xiaoyun Wang,Dejian Chen,Ting He,Yue Zhou,Li Tian,Zhaohui Wang,Zhaoliang Cui
出处
期刊:Membranes
[MDPI AG]
日期:2023-01-10
卷期号:13 (1): 91-91
被引量:8
标识
DOI:10.3390/membranes13010091
摘要
A large pore size Poly(vinylidene fluoride) (PVDF) membrane was prepared by the V-NIPS method using PVDF/N, N-dimethylacetamide (DMAc)/Polyvinyl pyrrolidone (PVP)/Polyethylene glycol (PEG) system. Firstly, the effect of different additive ratios on the membrane morphology and pore size was studied, and it was found that when the PVP:PEG ratio was 8:2, PVDF membranes with a relatively large pore size tend to be formed; the pore size is about 7.5 µm. Then, the effects of different exposure time on the membrane morphology and pore size were investigated, and it was found that as the vapor temperature increased, the pores on the surface of the membrane first became slightly smaller and then increased. Finally, the effects of different vapor temperatures on the membrane properties were discussed. The results showed that the as-prepared membrane exhibited suitable capillary flow rate and similar performance compared with a commercially available membrane in colloidal gold tests. The likely cause is that the amount of negative charge is less and the capillary migration rate is too fast. This paper provides a reference for the preparation of PVDF colloidal gold detection membrane.
科研通智能强力驱动
Strongly Powered by AbleSci AI