Abstract
AbstractAnalogous to the self‐assembly of low‐molecular‐weight amphiphiles in aqueous solutions, the formation of spherical micelle‐like aggregates has been observed in systems of amphiphilic block copolymers in water. The aggregates, often called micelles due to structural similarities with surfactant associates, are found to exist above the critical micelle concentration (cmc). The micellization of amphiphilic block copolymers has been investigated using a wide range of techniques, such as size‐exclusion chromatography (SEC), static and dynamic light scattering (SLS and DLS), small‐angle x‐ray scattering (SAXS), small‐angle neutron scattering (SANS), transmission electron microscopy (TEM), viscometry, and steady‐state fluorescence spectroscopy.The present lecture is a review of recent work in our laboratory concerning the micellization of ionic block copolymers. These high‐molecular‐weight amphiphiles may contain one or more of a variety of ionic blocks, such as poly(4‐vinylpyridinium alkyl halides), poly(metal acrylates), poly(metal methacrylates) and sulfonated polystyrene. In water, such polymers are referred to as block polyelectrolytes, as they combine the colloidal behavior of block copolymers with the long‐range electrostatic interactions of polyelectrolytes. Early work in this field has been reviewed by Selb and Gallot.1
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
