Abstract
Dynamic light scattering measurements have been performed for aqueous solutions of linear poly(vinylcaprolactam) (PVCa) at several polymer concentrations and over a wide range of ionic surfactant concentration. The intermolecular aggregation of PVCa accompanied by a sharp increase of the light scattering intensity is observed in pure water at 33 °C. The effect of ionic surfactants (cetylpyridinium chloride (CPC) and sodium dodecyl sulfate (SDS)) on the behavior of solutions of linear PVCa was studied as a function of temperature. For polymer concentrations below the overlap concentration (2.5 mg/mL) a decrease of the macromolecular hydrodynamic diameter is observed upon the addition of ionic surfactant (SDS, CPC) at low surfactant concentrations. This effect is in contrast to the behavior of the complexes of surfactant with another thermosensitive polymer, poly(N-isopropylacrylamide) (PNIPA). A further increase of the surfactant concentration leads to the reentrant swelling of macromolecules. In the prese...
Sign-in/Register to access full text options 
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.
