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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Santos, Olga Sotres, Javier Arnebrant, Thomas Barrantes, Alejandro |
| Description | Country affiliation: Sweden Author Affiliation: Barrantes A ( Biomedical Science, Faculty of Health and Society, Malmoe University, Skåne University Hospital, Malmoe, Sweden. alejandro.barrantes@mah.se) |
| Abstract | The effect of pH on the build-up of polyelectrolyte multilayers, PEMs, composed by poly-L-lysine and heparin onto two different substrates, silica and gold, has been studied by means of ellipsometry and quartz crystal microbalance with dissipation, QCM-D. Ellipsometry results indicate that the dry mass grows exponentially with the number of layers, and that this amount is larger as the pH values are raised. From QCM-D data the viscoelastic properties of the multilayered structure have been obtained. These data reflect that PEMs become more viscoelastic as the pH values are increased for silica substrates, while for gold the highest viscoelastic behavior is obtained at neutral pH and the elastic behavior becomes dominant as the pH is further increased or decreased. By combining these two surface techniques it has been also possible to determine the solvent content in the multilayers and reach a deeper understanding of the internal structure. |
| ISSN | 00219797 |
| Issue Number | 1 |
| Volume Number | 388 |
| e-ISSN | 10957103 |
| Journal | Journal of Colloid and Interface Science |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-12-15 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Gold Chemistry Heparin Polylysine Silicon Dioxide Adsorption Elasticity Hydrogen-ion Concentration Quartz Quartz Crystal Microbalance Techniques Surface Properties Viscosity Journal Article Research Support, Non-u.s. Gov't Discipline Colloid & Interface Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Colloid and Surface Chemistry Biomaterials Electronic, Optical and Magnetic Materials |
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