Chemistry Reference
In-Depth Information
APPENDIX
B
List of Symbols
A anionic portion of cationic initiator
A monomer residues in graft and block polymers
A
arithmetic mean
A
area
A
w
heat transfer area
A
preexponential factor in Arrhenius equations
A
Helmholtz free energy
A symbol for active species in chain-growth polymerizations
A
quantity defined in Eq. (8-110)
A
i
virial coefficients
B
virial coefficient
B
bulk compliance
B
specimen depth
B monomer residues in block and graft copolymers
B symbol for nucleophilic portion of anionic initiator
B
i
general reactivity factor for macroradical ending in monomer M
i
C
virial coefficient
C
1
,
C
2
Mooney
Rivlin constants
C
1
,C
2
WLF equation constants
[
C
]
concentration of active sites in Ziegler
Natta polymerization
C
N
characteristic ratio
D
outside diameter of pipe
D
contour length of polymer molecule
D
tensile creep compliance
D
specimen width
DP
degree of polymerization
ð
DP
n
Þ
0
number average degree of polymerization of vinyl polymers made in
absence of solvent or chain transfer agents
E
energy
E
Arrhenius activation energy
E
contact energy of a mixture of molecules
Et
CH
3
CH
2
a
F
fraction of vinyl polymer formed by chain disproportionation and/or
chain transfer (Chapter 6)
F
vector or scalar quantity used in Eq. (2-15)
