Heterostructured membranes with selective solvent-capture coatings and low-resistance 2D nanochannels for efficient mixed solvent separation

2021 ◽  
pp. 120217
Author(s):  
Xiaoli Wu ◽  
Yihao Chen ◽  
Wenpeng Li ◽  
Chongchong Chen ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Mixed Solvent ◽  
Selective Solvent ◽  
Low Resistance

Study of Sedimentation Velocity of Block Copolymer Micelles

1993 ◽  
Vol 58 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Minmin Tian ◽  
C. Ramireddy ◽  
Stephen E. Webber ◽  
Petr Munk
Keyword(s):  
Block Copolymer ◽  
Methacrylic Acid ◽  
Mixed Solvent ◽  
Hard Spheres ◽  
Sedimentation Velocity ◽  
Hydrodynamic Coefficient ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles ◽  
Size Heterogeneity ◽  
Good Agreement

No anomalies were observed during the measurement of sedimentation coefficients of block copolymer micelles formed by copolymers of styrene and methacrylic acid in a mixed solvent; 80 vol.% of dioxane and 20 vol.% of water. The shapes of the sedimenting boundaries suggest that the size heterogeneity of the micelles is small. Linear relations between 1/s and c were obtained. The value of the hydrodynamic coefficient κ was between 2 and 4 in a good agreement with the value 2.75 or 2.86 that was obtained by combining Burgers' or Fixman's values of the coefficient of the concentration dependence kvs for hard spheres with Einstein's value of [η] for spheres.

Low-resistance submicrometre gates used for self alignment

1984 ◽  
Vol 20 (22) ◽  
pp. 942
Author(s):  
K. Ismail ◽  
H. Beneking
Keyword(s):  
Low Resistance
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