Small-angle neutron scattering and static light scattering experiments
have been performed on worm-like micelles formed by soybean lecithin
and trace amounts of water in deuterated iso-octane. The structure and
flexibility of the aggregates have been investigated as a function of
solution composition. The data analysis comprises an application from
results of conformation space renormalization group theory and a non-
linear least-squares fitting procedure based upon a recently developed
numerical expression for the scattering function of a worm-like chain
with excluded volume effects.