Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation
Polyelectrolyte multilayers are coatings formed by the alternate deposition of polycations and polyanions on a charged surface. In this study we examined how the type of substrate affects a multilayer prepared from poly(allylamine hydrochloride) and poly(acrylic acid). Silicon and titanium wafers we...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/13/2566 |
| _version_ | 1797442261547483136 |
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| author | Mia Mesić Tin Klačić Anže Abram Klemen Bohinc Davor Kovačević |
| author_facet | Mia Mesić Tin Klačić Anže Abram Klemen Bohinc Davor Kovačević |
| author_sort | Mia Mesić |
| collection | DOAJ |
| description | Polyelectrolyte multilayers are coatings formed by the alternate deposition of polycations and polyanions on a charged surface. In this study we examined how the type of substrate affects a multilayer prepared from poly(allylamine hydrochloride) and poly(acrylic acid). Silicon and titanium wafers were used as substrates. Their properties were systematically studied using ellipsometry, tensiometry, atomic force microscopy and streaming potential measurements. Multilayers were built up at pH = 7 with tetramethylammonium chloride as the background salt. The growth of films was monitored by ellipsometry, while the morphology and surface roughness were determined by atomic force microscopy. It was found that the thickness of multilayers containing 10 layers on silicon is 10 nm, whereas the thickness of the same film on titanium is three times higher. It was shown that multilayers formed on silicon display a grain-like structure, which was not the case for a film formed on titanium. Such morphological properties are also reflected in the surface roughness. Finally, it was shown that, in addition to the electrostatic interactions, the hydrophobicity of the substrate also plays an important role in the polyelectrolyte multilayer formation process and influences its thickness and properties. |
| first_indexed | 2024-03-09T12:39:16Z |
| format | Article |
| id | doaj.art-d91874be78f5426295f1dbbfca0b84db |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T12:39:16Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-d91874be78f5426295f1dbbfca0b84db2023-11-30T22:20:47ZengMDPI AGPolymers2073-43602022-06-011413256610.3390/polym14132566Role of Substrate Type in the Process of Polyelectrolyte Multilayer FormationMia Mesić0Tin Klačić1Anže Abram2Klemen Bohinc3Davor Kovačević4Department of Chemistry, Division of Physical Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, CroatiaDepartment of Chemistry, Division of Physical Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, CroatiaDepartment for Nanostructured Materials, Jožef Stefan Institute, 1000 Ljubljana, SloveniaFaculty of Health Sciences, University of Ljubljana, 1000 Ljubljana, SloveniaDepartment of Chemistry, Division of Physical Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, CroatiaPolyelectrolyte multilayers are coatings formed by the alternate deposition of polycations and polyanions on a charged surface. In this study we examined how the type of substrate affects a multilayer prepared from poly(allylamine hydrochloride) and poly(acrylic acid). Silicon and titanium wafers were used as substrates. Their properties were systematically studied using ellipsometry, tensiometry, atomic force microscopy and streaming potential measurements. Multilayers were built up at pH = 7 with tetramethylammonium chloride as the background salt. The growth of films was monitored by ellipsometry, while the morphology and surface roughness were determined by atomic force microscopy. It was found that the thickness of multilayers containing 10 layers on silicon is 10 nm, whereas the thickness of the same film on titanium is three times higher. It was shown that multilayers formed on silicon display a grain-like structure, which was not the case for a film formed on titanium. Such morphological properties are also reflected in the surface roughness. Finally, it was shown that, in addition to the electrostatic interactions, the hydrophobicity of the substrate also plays an important role in the polyelectrolyte multilayer formation process and influences its thickness and properties.https://www.mdpi.com/2073-4360/14/13/2566polyelectrolyte multilayerssilicontitaniumAFMtensiometryellipsometry |
| spellingShingle | Mia Mesić Tin Klačić Anže Abram Klemen Bohinc Davor Kovačević Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation Polymers polyelectrolyte multilayers silicon titanium AFM tensiometry ellipsometry |
| title | Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation |
| title_full | Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation |
| title_fullStr | Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation |
| title_full_unstemmed | Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation |
| title_short | Role of Substrate Type in the Process of Polyelectrolyte Multilayer Formation |
| title_sort | role of substrate type in the process of polyelectrolyte multilayer formation |
| topic | polyelectrolyte multilayers silicon titanium AFM tensiometry ellipsometry |
| url | https://www.mdpi.com/2073-4360/14/13/2566 |
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