Gs. Pop et al., UNUSUAL STRUCTURE OF MICELLES OF ETHOXYLATED DIISONONYLPHENOL, Colloid journal of the Russian Academy of Sciences, 55(6), 1993, pp. 869-874
A study is made of the relationship between the molecular structure of
ethoxylated diisononylphenol (ODNP) (C9)2ArE(m) (m = 18, 20, 24) and
the colloid-chemical properties of micellar iodine solutions. The chem
ical composition of the substance, their degree of uniformity, and fea
tures of the conformational structure were studied by the methods of g
el-penetrant chromatography, NMR spectroscopy, mass spectrometry, and
molecular mechanics. The colloid-chemical properties were studied by t
he methods of low-angle x-ray scattering and photocorrelation spectros
copy. It was found that a somewhat unusual two-layered micellar struct
ure is formed as a result of features of the conformational structure
of ODNP molecules. This structure consists of a dense internal hydroph
obic layer of radius 1-1.2 nm, a transitional hydrophobic layer 2 nm t
hick, and hydrophilic outer shell 4 nm thick. The overall radius of th
e micelle is about 7 nm.