Hydrophobic Membrane Wettability: Effects of Salinity and Temperature
In this study, molecular dynamics (MD) simulations were used to investigate the effects of salinity (NaCl) and temperature (25 °C and 80 °C) on the wettability of droplets on a realistically modeled hydrophobic PTFE (polytetrafluoroethylene) surface. Droplet sizes of 20, 25, and 30 nm were analyzed...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/15/2/58 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849718936821563392 |
|---|---|
| author | Orhan Kaya |
| author_facet | Orhan Kaya |
| author_sort | Orhan Kaya |
| collection | DOAJ |
| description | In this study, molecular dynamics (MD) simulations were used to investigate the effects of salinity (NaCl) and temperature (25 °C and 80 °C) on the wettability of droplets on a realistically modeled hydrophobic PTFE (polytetrafluoroethylene) surface. Droplet sizes of 20, 25, and 30 nm were analyzed using both pure water and 8.45% NaCl solutions. The results indicated that salinity increased the contact angles, strengthening the PTFE’s hydrophobicity by disrupting the water’s hydrogen bonding at the interface and reducing the spreading area. Higher temperatures also led to an increase in contact angles by decreasing water structuring, although this effect was less pronounced than that of salinity. Ion concentration analysis revealed that a significant number of ions migrated away from the PTFE surface, a phenomenon further clarified through radial distribution function (RDF) analysis. |
| format | Article |
| id | doaj-art-1694b16f2fbd4dce9cb3c9a26d2d88d7 |
| institution | DOAJ |
| issn | 2077-0375 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj-art-1694b16f2fbd4dce9cb3c9a26d2d88d72025-08-20T03:12:15ZengMDPI AGMembranes2077-03752025-02-011525810.3390/membranes15020058Hydrophobic Membrane Wettability: Effects of Salinity and TemperatureOrhan Kaya0Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015, USAIn this study, molecular dynamics (MD) simulations were used to investigate the effects of salinity (NaCl) and temperature (25 °C and 80 °C) on the wettability of droplets on a realistically modeled hydrophobic PTFE (polytetrafluoroethylene) surface. Droplet sizes of 20, 25, and 30 nm were analyzed using both pure water and 8.45% NaCl solutions. The results indicated that salinity increased the contact angles, strengthening the PTFE’s hydrophobicity by disrupting the water’s hydrogen bonding at the interface and reducing the spreading area. Higher temperatures also led to an increase in contact angles by decreasing water structuring, although this effect was less pronounced than that of salinity. Ion concentration analysis revealed that a significant number of ions migrated away from the PTFE surface, a phenomenon further clarified through radial distribution function (RDF) analysis.https://www.mdpi.com/2077-0375/15/2/58hydrophobic surfacewettabilitytemperature effectssalinity effects |
| spellingShingle | Orhan Kaya Hydrophobic Membrane Wettability: Effects of Salinity and Temperature Membranes hydrophobic surface wettability temperature effects salinity effects |
| title | Hydrophobic Membrane Wettability: Effects of Salinity and Temperature |
| title_full | Hydrophobic Membrane Wettability: Effects of Salinity and Temperature |
| title_fullStr | Hydrophobic Membrane Wettability: Effects of Salinity and Temperature |
| title_full_unstemmed | Hydrophobic Membrane Wettability: Effects of Salinity and Temperature |
| title_short | Hydrophobic Membrane Wettability: Effects of Salinity and Temperature |
| title_sort | hydrophobic membrane wettability effects of salinity and temperature |
| topic | hydrophobic surface wettability temperature effects salinity effects |
| url | https://www.mdpi.com/2077-0375/15/2/58 |
| work_keys_str_mv | AT orhankaya hydrophobicmembranewettabilityeffectsofsalinityandtemperature |