Micellar structure from comparison of X-ray and neutron small-angle scattering

نویسندگان

  • Thomas Zemb
  • P. Charpin
چکیده

2014 X-ray scattering patterns of ionic micellar solutions contain both interand intramicellar interferences. We show that these two terms can be separated according to the method developed by Hayter and Penfold. Both X-ray and neutron scattering signals are predicted on an absolute scale by a unique model of chain packing. Examples of results obtained through an incomplete separation of intermicellar interferences are discussed using sodium octanoate and sodium dodecylsulfate as typical examples of direct ionic micelles. J. Physique 46 (1985) 249-256 FTVRIER 1985,

منابع مشابه

Application of small angle X-ray scattering (SAXS) for differentiation between normal and cancerous breast tissues

ABSTRACT Background: Coherent scattering leads to diffraction effects and especially constructive interferences. Theseinterferences carry some information about the molecular structure of the tissue. As breast cancer isthe most widespread cancer in women, this project evaluated the application of small angleX-ray scattering (SAXS) for differentiation between normal and cancerous breast tissues....

متن کامل

Small-Angle Scattering from Micellar Solutions

Micellar solutions are the suspension of the colloidal aggregates of the surfactant molecules in aqueous solutions. The structure (shape and size) and the number density of these aggregates, referred to as micelles, depend on the molecular architecture of the surfactant molecule, presence of additives, and the solution conditions such as temperature, concentration etc. Small-angle scattering is...

متن کامل

Small-angle neutron scattering study of the temperature-dependent attractive interaction in dense L64 copolymer micellar solutions and its relation to kinetic glass transition.

We made small-angle neutron scattering (SANS) study of a Pluronic L64 micellar system in aqueous solution at high polymer concentrations (wt %), 35%<c<53%, in a temperature range where a kinetic glass transition has been observed by photon correlation spectroscopy and zero shear viscosity measurements. We analyze SANS intensity distributions assuming that the micelles are spherical and interact...

متن کامل

Micellar structure and inter-micelle interactions in micellar solutions: Results of small angle neutron scattering studies

Micelles are aggregates of surfactant molecules suspended in water. The structure (shape and size) of a micelle depends both on the architecture of the constituent surfactant molecule and the solution conditions such as temperature, presence of impurities, etc. The inter-particle interaction between micelles also depends on several different parameters. It is of interest to study the structure ...

متن کامل

Analysis of X-ray and neutron scattering from biomacromolecular solutions.

New developments in small-angle X-ray and neutron scattering studies of biological macromolecules in solution are presented. Small-angle scattering is rapidly becoming a streamline tool in structural molecular biology providing unique information about overall structure and conformational changes of native individual proteins, functional complexes, flexible macromolecules and assembly processes.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

متن کامل
عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2017