Abstract
Complex particles have been formed by the electrostatic association of protonated polystyrene-b-poly(2-vinylpyridine) (PS-b-PVPH+) micelles with sodium poly(styrenesulfonate) (PSS-Na+), all at pH 1. Light scattering demonstrates that there is a large mass excess of PSS- associated with each PS-b-PVPH+ micelle (the molecular weight increases by factors of 5−6), even in the limit that the weight ratio of the micelle to PSS-Na+ is very low, thereby avoiding bridged structures. This system is an example of charge and mass overcompensation, but to a much greater extent than usual. Surprisingly the effect of the molecular weight of the PSS-Na+ is minor. We believe that it is the flexible polymer micelle corona that permits such a large degree of mass and charge overcompensation because the linear PSS-Na+ can penetrate the micelle corona and adopt a convoluted local conformation with many loops or points of grafting attachment. While these particles are stable with respect to storage, they do not seem to be stab...
Published Version
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.
