Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane
Microcalorimetry and measurements of the contact angle of water were performed to investigate the hydrophilic/hydrophobic properties of silica surfaces modified with metal oxides and polydimethylsiloxane (PDMS) at 20–500°C. Fumed silicas whose surfaces contained grafted oxygen compounds of metals we...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2004-07-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617042879546 |
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| author | A.G. Dyachenko M.V. Borysenko S.V. Pakhovchyshyn |
| author_facet | A.G. Dyachenko M.V. Borysenko S.V. Pakhovchyshyn |
| author_sort | A.G. Dyachenko |
| collection | DOAJ |
| description | Microcalorimetry and measurements of the contact angle of water were performed to investigate the hydrophilic/hydrophobic properties of silica surfaces modified with metal oxides and polydimethylsiloxane (PDMS) at 20–500°C. Fumed silicas whose surfaces contained grafted oxygen compounds of metals were used as adsorbents, with VOCl 3 , CrO 2 Cl 2 , TiCl 4 , SnCl 4 , AlCl 3 and Zn(acac) 2 vapours being applied as modifiers. It was found that the hydrophobic coating of silicas modified with metal oxides and PDMS (8–40 wt%) was stable over the temperature range 100–350°C. With a titania coating, the hydrophobic properties were retained at temperatures up to 500°C for an adsorbed polymer content of 20–40 wt%. |
| format | Article |
| id | doaj-art-8c39d7a10ef24766badaf3bcbb4e38ad |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2004-07-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-8c39d7a10ef24766badaf3bcbb4e38ad2025-01-03T01:24:46ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382004-07-012210.1260/0263617042879546Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and PolydimethylsiloxaneA.G. DyachenkoM.V. BorysenkoS.V. PakhovchyshynMicrocalorimetry and measurements of the contact angle of water were performed to investigate the hydrophilic/hydrophobic properties of silica surfaces modified with metal oxides and polydimethylsiloxane (PDMS) at 20–500°C. Fumed silicas whose surfaces contained grafted oxygen compounds of metals were used as adsorbents, with VOCl 3 , CrO 2 Cl 2 , TiCl 4 , SnCl 4 , AlCl 3 and Zn(acac) 2 vapours being applied as modifiers. It was found that the hydrophobic coating of silicas modified with metal oxides and PDMS (8–40 wt%) was stable over the temperature range 100–350°C. With a titania coating, the hydrophobic properties were retained at temperatures up to 500°C for an adsorbed polymer content of 20–40 wt%.https://doi.org/10.1260/0263617042879546 |
| spellingShingle | A.G. Dyachenko M.V. Borysenko S.V. Pakhovchyshyn Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane Adsorption Science & Technology |
| title | Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane |
| title_full | Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane |
| title_fullStr | Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane |
| title_full_unstemmed | Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane |
| title_short | Hydrophilic/Hydrophobic Properties of Silica Surfaces Modified with Metal Oxides and Polydimethylsiloxane |
| title_sort | hydrophilic hydrophobic properties of silica surfaces modified with metal oxides and polydimethylsiloxane |
| url | https://doi.org/10.1260/0263617042879546 |
| work_keys_str_mv | AT agdyachenko hydrophilichydrophobicpropertiesofsilicasurfacesmodifiedwithmetaloxidesandpolydimethylsiloxane AT mvborysenko hydrophilichydrophobicpropertiesofsilicasurfacesmodifiedwithmetaloxidesandpolydimethylsiloxane AT svpakhovchyshyn hydrophilichydrophobicpropertiesofsilicasurfacesmodifiedwithmetaloxidesandpolydimethylsiloxane |