Airflow-field-induced sandwich-type membrane of block copolymer for selective ion separation.
A simple and effective airflow method to prepare sandwich-type block copolymer films is reported. The films are composed of three layers: vertically oriented nanocylinders align in both upper and bottom layers and irregular nanocylinders exist in the bulk of the film. The vertically oriented nanocylinders in both sides can provide high accessibility to ions and ensures the exchange of chemical species between the membrane and external environment, while the irregularly oriented nanocylinders in the middle part of the film can prolong the pathway of ions transportation and enhance ions selectivity.
School of Chemistry and Chemical Engineering, the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
Feng
F
Shan
Xuemin
X
Lu
Junfang
J
Guan
Qinghua
Q
Lu
Xingliang
X
Feng
D007477:Ions / Q000302:isolation & purification; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011522:Protons; D013499:Surface Properties; D014639:Vanadium / Q000302:isolation & purification*
D007477:Ions; D011108:Polymers; D011522:Protons; D014639:Vanadium
airflow field; block copolymer; ions separation; self-assembly