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dc.contributor.authorYulizar, Yoki-
dc.contributor.authorHafizah, d Mas Ayu Elita-
dc.description.abstractStability of Au/alginate nanocomposite was theoretically evaluated by computing various interactions energy which contributes in the system, including attraction and repulsion interaction. The results revealed that both polymer and electrostatic charges play a significant role in the stabilization, but the steric repulsion comes from polymer chain is a more effective stabilization mechanism than the electrostatic repulsion. Higher pH yielded in stronger electrostatic repulsion but when the alginate thickness is low the resulting nanocomposite was less stable in a long time period. Interaction energies for Au/alginate nanocomposite colloidal system was up to ~60 kT for alginate thickness of 1 nm, at very short particle-particle separation distance (< 1 nm). As the alginate thickness can be controlled by adjusting the alginate concentration, it can be concluded that the high stability of Au/alginate nanocomposite can be achieved by employing an appropriate amount of alginate concentration.en_US
dc.publisherDepartment of Chemistry, Gadjah Mada Universityen_US
dc.relation.ispartofseriesVolume 14;No. 3-
dc.sourceIndonesian Journal of Chemistry (Indones. J. Chem) Volume 14 No. 3 Pp. 239-245 November 2014en_US
dc.subjectAu/alginate nanocompositeen_US
dc.subjectvan der Waals energyen_US
dc.subjectsteric repulsion energyen_US
dc.subjectelectrostatic energyen_US
dc.titleTheoretical Analysis Of Interaction Energy In Alginate-Capped Gold Nanoparticles Colloidal Systemen_US
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