{'fraction_non_alphanumeric': 0.019230769230769232, 'fraction_numerical': 0.0, 'mean_word_length': 5.067484662576687, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Effect of micelle formation on optical rotatory dispersion of beta-D-octyl glucoside.

The optical rotatory dispersion of a nonionic surfactant, β‐D‐octyl glucoside, has been investigated in aqueous solutions in the UV region. The rotatory dispersion curves at any concentration can be represented by a one‐term Drude equation. The specific rotation at any wavelength shows an increase at the CMC, which can be determined reliably from this change in specific rotation. The rotatory dispersion curve for the surfactant in micellized form has been derived and compared with that of the nonmicellized surfactant below the CMC. The change is small and can be ascribed to a “medium” effect, arising from the difference in the local refractive index at the micelle surface, as compared to the bulk solvent. This interpretation is compatible with the currently accepted ideas on the fluid nature of the micelle core and suggests a lack of any conformational restraint at the micellar interface.