Electrostatic adsorption of polystyrene particles with different surface charges onto the surface of an ultrathin polymer film
Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN: 0927-7757, Vol: 164, Issue: 2, Page: 237-245
2000
- 42Citations
- 31Captures
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Article Description
The adsorption of polystyrene particles with different surface charges from aqueous dispersions onto the surfaces of cationic ultrathin polymer films was quantified using a quartz crystal microbalance (QCM) technique. The polymer films were prepared by the alternate adsorption technique from poly(allylamine hydrochloride) (PAH) and poly(sodium 4-styrenesulfonate) (PSS) in the presence or absence of NaCl onto the QCM substrate. Particle adsorption, as a result of electrostatic interaction, onto the outermost PAH surface was observed by QCM. The adsorption behavior of two differently charged particles was examined and revealed greater adsorption of particles with a relatively larger surface charge. The dependence of adsorption of all the particles against an outermost PAH thickness in a polymer precursor film was described by a sigmoid curve, indicating that a critical charge on/in the film is required for adsorption. SEM observations showed monolayer adsorption without three-dimensional aggregation.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0927775799003994; http://dx.doi.org/10.1016/s0927-7757(99)00399-4; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0033971019&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0927775799003994; http://linkinghub.elsevier.com/retrieve/pii/S0927775799003994; http://api.elsevier.com/content/article/PII:S0927775799003994?httpAccept=text/xml; http://api.elsevier.com/content/article/PII:S0927775799003994?httpAccept=text/plain; http://dx.doi.org/10.1016/s0927-7757%2899%2900399-4; https://dx.doi.org/10.1016/s0927-7757%2899%2900399-4
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