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The adsorption of hyperbranched polymers on silicon oxide surfaces
Karadeniz Tech Univ, Fac Forestry, Dept Pulp & Paper Technol.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0001-8622-0386
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2006 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 301, no 1, 32-39 p.Article in journal (Refereed) Published
Abstract [en]

The electrostatic interaction between quarternised hyperbranched polymers (polyesteramides) and a silicon oxide (SiO2) surface has been studied via adsorption studies with quartz crystal microbalance instrument with dissipation (QCM-D). Frequency shift (Delta f) results show that the increase in both pH and salt concentration positively affect the adsorbed amount of these polymers, calculated by Sauerbrey equation, on the QCM crystal. The adsorbed amount of HA1 (with lower molecular weight and higher charge density) was lower than that of HA2 (with higher molecular weight and lower charge density) in all experiments. It was also observed that there are no significant changes in the dissipation after adsorption of these polymers. This indicated that both hyperbranched polymers formed rigid adsorbed layers on the negative SiO2 surface. Additionally, the results were compared with adsorption of poly-DADMAC and the results showed that the hyperbranched polymers formed thicker and more rigid layers as compared with the poly-DADMAC.

Place, publisher, year, edition, pages
2006. Vol. 301, no 1, 32-39 p.
Keyword [en]
hyperbranched polymers, quartz crystal microbalance, adsorption, Sauerbrey equation, layer thickness, silicon oxide
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-14144DOI: 10.1016/j.jcis.2006.04.052ISI: 000239538300004Scopus ID: 2-s2.0-33746189858OAI: oai:DiVA.org:kth-14144DiVA: diva2:330760
Note
QC 20100720Available from: 2010-07-20 Created: 2010-07-20 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Dynamic and Equilibrium Properties of Adsorbed Polyelectrolyte Layers
Open this publication in new window or tab >>Dynamic and Equilibrium Properties of Adsorbed Polyelectrolyte Layers
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2008. 66 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2008:25
Keyword
adsorption; cellulose; conformation; flocculation; kinetics; model surfaces; polyelectrolytes; pulp fibres; Quartz Crystal Microbalance with Dissipation; silicon oxide; Stagnation Point Adsorption Reflectometry
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-4697 (URN)978-91-7178-938-9 (ISBN)
Public defence
2008-04-25, STFI-salen, STFI-Packforsk, Drottning Kristinas väg 61, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100720Available from: 2008-04-18 Created: 2008-04-18 Last updated: 2010-07-20Bibliographically approved

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Wågberg, Lars

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