Superspreading Surfactant on Hydrophobic Porous Substrates
The wetting behavior of droplets of aqueous surfactant solutions over hydrophobic thin PVDF porous membrane and non-porous hydrophobic PVDF film is investigated for small (~10 μL) droplets of aqueous trisiloxane surfactant solutions: superspreader S 240. The time dependencies of contact angle, dropl...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-05-01
|
| Series: | Colloids and Interfaces |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-5377/7/2/38 |
| _version_ | 1797595392906362880 |
|---|---|
| author | Wellington Tafireyi Max Littlewood Himiyage Chaminda Hemaka Bandulasena Anna Trybala Victor Mikhilovich Starov |
| author_facet | Wellington Tafireyi Max Littlewood Himiyage Chaminda Hemaka Bandulasena Anna Trybala Victor Mikhilovich Starov |
| author_sort | Wellington Tafireyi |
| collection | DOAJ |
| description | The wetting behavior of droplets of aqueous surfactant solutions over hydrophobic thin PVDF porous membrane and non-porous hydrophobic PVDF film is investigated for small (~10 μL) droplets of aqueous trisiloxane surfactant solutions: superspreader S 240. The time dependencies of contact angle, droplet radius, wetted area and volume were monitored as well as penetration into the porous substrate. It is shown that the fast spreading of droplets of trisiloxane solutions takes place both in the case of porous and non-porous substrates at a concentration above some critical concentration. It was found that the trisiloxane droplets penetrate into the hydrophobic porous substrates and disappear much faster than on a corresponding hydrophobic non-porous substrate, which was not observed before. This phenomenon is referred to as “superpenetration”. |
| first_indexed | 2024-03-11T02:36:49Z |
| format | Article |
| id | doaj.art-693c868dfc2f4d2cbf25226db67d395d |
| institution | Directory Open Access Journal |
| issn | 2504-5377 |
| language | English |
| last_indexed | 2024-03-11T02:36:49Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Colloids and Interfaces |
| spelling | doaj.art-693c868dfc2f4d2cbf25226db67d395d2023-11-18T09:53:31ZengMDPI AGColloids and Interfaces2504-53772023-05-01723810.3390/colloids7020038Superspreading Surfactant on Hydrophobic Porous SubstratesWellington Tafireyi0Max Littlewood1Himiyage Chaminda Hemaka Bandulasena2Anna Trybala3Victor Mikhilovich Starov4Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, Leicestershire, UKDepartment of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, Leicestershire, UKDepartment of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, Leicestershire, UKDepartment of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, Leicestershire, UKDepartment of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, Leicestershire, UKThe wetting behavior of droplets of aqueous surfactant solutions over hydrophobic thin PVDF porous membrane and non-porous hydrophobic PVDF film is investigated for small (~10 μL) droplets of aqueous trisiloxane surfactant solutions: superspreader S 240. The time dependencies of contact angle, droplet radius, wetted area and volume were monitored as well as penetration into the porous substrate. It is shown that the fast spreading of droplets of trisiloxane solutions takes place both in the case of porous and non-porous substrates at a concentration above some critical concentration. It was found that the trisiloxane droplets penetrate into the hydrophobic porous substrates and disappear much faster than on a corresponding hydrophobic non-porous substrate, which was not observed before. This phenomenon is referred to as “superpenetration”.https://www.mdpi.com/2504-5377/7/2/38wettinghydrophobicsurfactantssuperspreaderssuperpenetration |
| spellingShingle | Wellington Tafireyi Max Littlewood Himiyage Chaminda Hemaka Bandulasena Anna Trybala Victor Mikhilovich Starov Superspreading Surfactant on Hydrophobic Porous Substrates Colloids and Interfaces wetting hydrophobic surfactants superspreaders superpenetration |
| title | Superspreading Surfactant on Hydrophobic Porous Substrates |
| title_full | Superspreading Surfactant on Hydrophobic Porous Substrates |
| title_fullStr | Superspreading Surfactant on Hydrophobic Porous Substrates |
| title_full_unstemmed | Superspreading Surfactant on Hydrophobic Porous Substrates |
| title_short | Superspreading Surfactant on Hydrophobic Porous Substrates |
| title_sort | superspreading surfactant on hydrophobic porous substrates |
| topic | wetting hydrophobic surfactants superspreaders superpenetration |
| url | https://www.mdpi.com/2504-5377/7/2/38 |
| work_keys_str_mv | AT wellingtontafireyi superspreadingsurfactantonhydrophobicporoussubstrates AT maxlittlewood superspreadingsurfactantonhydrophobicporoussubstrates AT himiyagechamindahemakabandulasena superspreadingsurfactantonhydrophobicporoussubstrates AT annatrybala superspreadingsurfactantonhydrophobicporoussubstrates AT victormikhilovichstarov superspreadingsurfactantonhydrophobicporoussubstrates |