|Q| ¼ Q Scattering vector in A ˚ À1
A
Area
a
Elementary lattice size
A(Q)
Scattering amplitude in cm
A 2 , A 3
Second and third virial coeffcient
b
Scattering length in cm
C F , C H
Numerical prefactors
d
Density in g/cm
3
D
Diffusion coefficient
d f
Fractal dimension
E a
Activation energy
F
Free energy
f
Ratio between degree of polymerization of soluble and insoluble block
F micelle
The mixing term of free block copolymers and solvent
F mix
Free energy of mixing
G(P, ϕ 1 ) Chemical potential
H/D
Hydrogen/deuterium
j P
Flux of unimers to micelle of size P
k B
Boltzmann constant: 1.38 Â 10
À23 J/K
L
Cylinder length in A ˚
l i
Monomer segment length of block i
M w
Weight average molecular weight in g/mole
n(r)
Density profile
N A
Degree of polymerization of soluble block
N Avo
Avogadro’s number: 6.022 Â 10
23 mole
À1
N B
Degree of polymerization of insoluble block
N m
Total particle number
P
Micellar aggregation number
P(Q)
Form factor
R(t)
Relaxation function (TR-SANS)
R c
Micellar core radius in A ˚
R g
Radius of gyration
R m
Total micellar radius in A ˚
s
Grafting density (area available per chain)
S(Q)
Structure factor
S m
Translational entropy of micelles
t dead
Dead time of mixing
v
Flory exponent
V i
Volume of component i
V s
Sample volume in cm
3
γ
Interfacial tension in mN/m
ζ
Fraction of block copolymer in the micellar state
η
Corona density
ξ
Blob radius/correlation length
Kinetics of Block Copolymer Micelles Studied by Small-Angle Scattering Methods
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