Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups
Hypothesis: It is theoretically predicted and hypothesized that the charge density and size of spherical nanoparticles are the key factors for their adsorption onto oppositely charged surfaces. It is also hypothesized that the morphology and charge of the surface are of great importance. In-plane 2D...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/170887 |
| _version_ | 1826116639728336896 |
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| author | Alexakis, Alexandros Efraim Leggieri, Maria Rosella Telaretti Wågberg, Lars Malmström, Eva Benselfelt, Tobias |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Alexakis, Alexandros Efraim Leggieri, Maria Rosella Telaretti Wågberg, Lars Malmström, Eva Benselfelt, Tobias |
| author_sort | Alexakis, Alexandros Efraim |
| collection | NTU |
| description | Hypothesis: It is theoretically predicted and hypothesized that the charge density and size of spherical nanoparticles are the key factors for their adsorption onto oppositely charged surfaces. It is also hypothesized that the morphology and charge of the surface are of great importance. In-plane 2D (silica) or a volumetric 3D (regenerated TEMPO-oxidized cellulose model surfaces) distribution of charged groups is expected to influence charge compensation and, thus, the adsorption behavior. Experiments: In this work, self-stabilized nanolatexes with a range of cationic charge densities and sizes were synthesized through reversible addition fragmentation chain-transfer (RAFT) polymerization coupled with polymerization-induced self-assembly (PISA). Their adsorption onto silica and anionic cellulose model surfaces was investigated using stagnation point adsorption reflectometry (SPAR) and quartz crystal microbalance with dissipation (QCM-D).
Findings: Experiments and theory agree and show that the size of the nanolatex and the difference in charge density compared to the substrate determine the charge compensation and, thus, the surface coverage. Highly charged or large nanolatexes overcompensate the surface charge of non-porous substrates leading to a significant repulsive zone where other particles cannot adsorb. For porous substrates like cellulose, the vertical distribution of charged groups in the 3D volume prevents overcompensation and thus increases the adsorption. This systematic study investigates the isolated effect of surface charge and size and paves the way for on-demand particles specifically designed for a surface with particular characteristics. |
| first_indexed | 2024-10-01T04:14:56Z |
| format | Journal Article |
| id | ntu-10356/170887 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:14:56Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1708872023-10-06T15:44:20Z Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups Alexakis, Alexandros Efraim Leggieri, Maria Rosella Telaretti Wågberg, Lars Malmström, Eva Benselfelt, Tobias School of Materials Science and Engineering Engineering::Materials Adsorption Nanolatex Hypothesis: It is theoretically predicted and hypothesized that the charge density and size of spherical nanoparticles are the key factors for their adsorption onto oppositely charged surfaces. It is also hypothesized that the morphology and charge of the surface are of great importance. In-plane 2D (silica) or a volumetric 3D (regenerated TEMPO-oxidized cellulose model surfaces) distribution of charged groups is expected to influence charge compensation and, thus, the adsorption behavior. Experiments: In this work, self-stabilized nanolatexes with a range of cationic charge densities and sizes were synthesized through reversible addition fragmentation chain-transfer (RAFT) polymerization coupled with polymerization-induced self-assembly (PISA). Their adsorption onto silica and anionic cellulose model surfaces was investigated using stagnation point adsorption reflectometry (SPAR) and quartz crystal microbalance with dissipation (QCM-D). Findings: Experiments and theory agree and show that the size of the nanolatex and the difference in charge density compared to the substrate determine the charge compensation and, thus, the surface coverage. Highly charged or large nanolatexes overcompensate the surface charge of non-porous substrates leading to a significant repulsive zone where other particles cannot adsorb. For porous substrates like cellulose, the vertical distribution of charged groups in the 3D volume prevents overcompensation and thus increases the adsorption. This systematic study investigates the isolated effect of surface charge and size and paves the way for on-demand particles specifically designed for a surface with particular characteristics. Published version The authors acknowledge funding from the Knut and Alice Wallenberg Foundation (KAW) through the Wallenberg Wood Science Center and a personal fellowship for Tobias Benselfelt. 2023-10-04T06:58:24Z 2023-10-04T06:58:24Z 2023 Journal Article Alexakis, A. E., Leggieri, M. R. T., Wågberg, L., Malmström, E. & Benselfelt, T. (2023). Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups. Journal of Colloid and Interface Science, 634, 610-620. https://dx.doi.org/10.1016/j.jcis.2022.12.038 0021-9797 https://hdl.handle.net/10356/170887 10.1016/j.jcis.2022.12.038 36549209 2-s2.0-85144465921 634 610 620 en Journal of Colloid and Interface Science © 2022 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering::Materials Adsorption Nanolatex Alexakis, Alexandros Efraim Leggieri, Maria Rosella Telaretti Wågberg, Lars Malmström, Eva Benselfelt, Tobias Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups |
| title | Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups |
| title_full | Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups |
| title_fullStr | Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups |
| title_full_unstemmed | Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups |
| title_short | Nanolatex architectonics: influence of cationic charge density and size on their adsorption onto surfaces with a 2D or 3D distribution of anionic groups |
| title_sort | nanolatex architectonics influence of cationic charge density and size on their adsorption onto surfaces with a 2d or 3d distribution of anionic groups |
| topic | Engineering::Materials Adsorption Nanolatex |
| url | https://hdl.handle.net/10356/170887 |
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