KEY TO SYMBOLS AND ABBREVIATIONS

Structure-Property Relationships

C# carbon number; number of carbon atoms in a linear alkyl chain
CMC critical micelle concentration
EO# ethylene oxide number; number of ethylene oxide residues in poly(ethyleneoxide)
F F-statistic of regression
HGP head group position in surfactant alkyl chain
KS3 Kier shape index of third order
MW molecular weight
N number of structures in regression
Nc (see C#)
QSPR quantitative structure-property relationships
r2; R2 square of correlation coefficient of regression
RNNO relative number of oxygen and nitrogen atoms
s2 square of standard error of regression
TDIP total molecular dipole moment
t-KH0 Kier & Hall molecular connectivity index of 0th order forthe hydrophobic domain
t-ASIC2 average structural information content of 2nd order for thehydrophobic domain

Microemulsions

HLB hydrophile-lipophile balance (also NHLB)
O/W oil-in-water (emulsions or microemulsions)
PIT phase inversion temperature
POE poly(ethylene oxide) or PEO
QELS quasi-elastic light scattering
W/O water-in-oil
w/v weight to volume units (usually grams per ml of liquid)

Micellar Lifetime

MBP maximum bubble pressure (for measurement of dynamic surface tension)
TAA tetraalkylammonium ions
h viscosity (centipoise)
t1 fast micellar relaxation time
t2 slow micellar relaxation timeor micellar lifetime



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