Chemistry Reference
In-Depth Information
e
base of natural logarithms
e
polarity factor
e
equivalent weight of reagent used in end group determinations
e
(subscript) equivalent random polymer chain
f
functionality
f
initiator efficiency
f
number of monomer units in
j
turns of the polymer helix in a crystallite
f
tensile force
f
mole fraction of comonomer
i
in monomer feed
f
i
proportion of total sample with molecular weight
M
i
f
e
internal energy contribution to tensile force
f
(
t
)
frequency of residence times in a continuous reactor
g
symbol for graft in polymer nomenclature
g
gravitational acceleration constant
h
height of column of liquid
h
Planck's constant
h
energy dissipated/unit volume/time in shear deformation
i
number of repeating units in a polymer molecule
1)
1
/
2
i
(
2
j
dummy index
j
number of turns of polymer helix which accommodate
f
monomer units
in a polymer crystal
k
specific reaction rate constant
k
calibration constant in vapor phase osmometry
k
s
instrument constant in vapor phase osmometry
k
H
Huggins constant
k
I
constant in Kraemer equation
k
p
propagation rate constant
k
tr
,
M
rate constant for chain transfer to monomer
l
length
l
bond length
m
number of repeating units in polymer molecule
m
mass
m
meter (0.001 km)
n
number of repeating units in polymer molecule
n
refractive index of solution
n
number of equivalents
n
number of radicals per polymer particle in emulsion polymerization
n
power law index
n
(subscript) number distribution
n
j
number of molecules (or moles) per unit volume with molecular weight
M
j
n
0
refractive index of suspending medium
p
amount of reagent used in end group measurements
p
extent of reaction
