Abstract
AbstractEngineered polyelectrolyte multilayer (PEM) films of polyallylamine hydrochloride (PAH) and polystyrene sulfonate (PSS) assembled on polyethylene terephthalate (PET) substrate as well as PEM microcapsules of PAH and PSS templated onto polystyrene latex were fabricated through a layer‐by‐layer assembly and characterized by various analytical techniques. The characteristic ion intensities from the respective outermost layer obtained by ToF‐SIMS accorded well with the layer composition. The S and C8H7SO3 ion intensities were higher in PSS layers; whereas Cl ion intensity was higher in PAH layers. The SEM image displayed morphology which involved electrostatic interactions during the formation of the multilayer. AFM measurement showed the shell thickness of PEM microcapsules as 1.21 nm. ToF‐SIMS total ion, S ion, and Cl ion images were useful to delineate the PEM microcapsules location and to indicate successful assembly. The results demonstrated for the first time the feasibility of label‐free ToF‐SIMS imaging of PEM microcapsules. Copyright © 2010 John Wiley & Sons, Ltd.
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.
