Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets
Thermoresponsive poly(<i>N</i>-isopropylacrylamide)-grafted silica (SiO<sub>2</sub>-PNIPAM) particles were synthesized to control the drying patterns of colloidal suspension droplets. These particles undergo a hydrophilic-to-hydrophobic transition at a lower critical solution...
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2025
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Ychwanegu Tag
Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!
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| _version_ | 1849927625330393088 |
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| author | Seong Hwan Kim (2861699) |
| author2 | Mungeun Kim (22684210) Yu Jin Kim (804271) Hyun Wook Jung (2059297) Joona Bang (1502905) |
| author2_role | author author author author |
| author_facet | Seong Hwan Kim (2861699) Mungeun Kim (22684210) Yu Jin Kim (804271) Hyun Wook Jung (2059297) Joona Bang (1502905) |
| author_role | author |
| dc.creator.none.fl_str_mv | Seong Hwan Kim (2861699) Mungeun Kim (22684210) Yu Jin Kim (804271) Hyun Wook Jung (2059297) Joona Bang (1502905) |
| dc.date.none.fl_str_mv | 2025-11-25T21:03:38Z |
| dc.identifier.none.fl_str_mv | 10.1021/acs.macromol.5c02502.s002 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/media/Thermoresponsive_PNIPAM-Grafted_Silica_Particles_for_Modulating_Coffee-Ring_Effects_in_Drying_Colloidal_Droplets/30715627 |
| dc.rights.none.fl_str_mv | CC BY-NC 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Cell Biology Biotechnology Ecology Infectious Diseases Virology Space Science Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified outward capillary flow induced interfacial flow conventional colloidal systems colloidal suspension droplets grafted silica particles drive unmodified sio 2 </ sub n </ thermoresponsive pnipam suppressing coffee sufficiently strong ring formation ring effects particles undergo particles toward partially incorporate modulating coffee mixed suspensions lower sio hydrophobic transition functional particles effective strategy drying patterns droplet interior disordered patterns |
| dc.title.none.fl_str_mv | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| dc.type.none.fl_str_mv | Dataset Media info:eu-repo/semantics/publishedVersion dataset |
| description | Thermoresponsive poly(<i>N</i>-isopropylacrylamide)-grafted silica (SiO<sub>2</sub>-PNIPAM) particles were synthesized to control the drying patterns of colloidal suspension droplets. These particles undergo a hydrophilic-to-hydrophobic transition at a lower critical solution temperature (LCST) of ∼34 °C in water. Below the LCST, the SiO<sub>2</sub>-PNIPAM particles follow the outward capillary flow and accumulate at the edge. Above the LCST, surface tension gradients arising from temperature and concentration differences induce inward interfacial flow, redistributing the particles toward the center and suppressing coffee-ring formation. In mixed suspensions of SiO<sub>2</sub> and SiO<sub>2</sub>-PNIPAM particles, when the SiO<sub>2</sub>-PNIPAM content exceeds 50%, the induced interfacial flow is sufficiently strong to drive unmodified SiO<sub>2</sub> particles toward the droplet interior, enabling uniform particle deposition. At lower SiO<sub>2</sub>-PNIPAM contents, heteroaggregation between SiO<sub>2</sub> and SiO<sub>2</sub>-PNIPAM particles results in disordered patterns. This study exploits tunable interfacial behaviors of functional particles to partially incorporate them into conventional colloidal systems, demonstrating a simple, cost-effective strategy for mitigating inhomogeneous drying patterns. |
| eu_rights_str_mv | openAccess |
| id | Manara_7044b88063d51be6c4e4df27bc4ced91 |
| identifier_str_mv | 10.1021/acs.macromol.5c02502.s002 |
| network_acronym_str | Manara |
| network_name_str | ManaraRepo |
| oai_identifier_str | oai:figshare.com:article/30715627 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY-NC 4.0 |
| spelling | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal DropletsSeong Hwan Kim (2861699)Mungeun Kim (22684210)Yu Jin Kim (804271)Hyun Wook Jung (2059297)Joona Bang (1502905)Cell BiologyBiotechnologyEcologyInfectious DiseasesVirologySpace ScienceChemical Sciences not elsewhere classifiedPhysical Sciences not elsewhere classifiedoutward capillary flowinduced interfacial flowconventional colloidal systemscolloidal suspension dropletsgrafted silica particlesdrive unmodified sio2 </ subn </thermoresponsive pnipamsuppressing coffeesufficiently strongring formationring effectsparticles undergoparticles towardpartially incorporatemodulating coffeemixed suspensionslower siohydrophobic transitionfunctional particleseffective strategydrying patternsdroplet interiordisordered patternsThermoresponsive poly(<i>N</i>-isopropylacrylamide)-grafted silica (SiO<sub>2</sub>-PNIPAM) particles were synthesized to control the drying patterns of colloidal suspension droplets. These particles undergo a hydrophilic-to-hydrophobic transition at a lower critical solution temperature (LCST) of ∼34 °C in water. Below the LCST, the SiO<sub>2</sub>-PNIPAM particles follow the outward capillary flow and accumulate at the edge. Above the LCST, surface tension gradients arising from temperature and concentration differences induce inward interfacial flow, redistributing the particles toward the center and suppressing coffee-ring formation. In mixed suspensions of SiO<sub>2</sub> and SiO<sub>2</sub>-PNIPAM particles, when the SiO<sub>2</sub>-PNIPAM content exceeds 50%, the induced interfacial flow is sufficiently strong to drive unmodified SiO<sub>2</sub> particles toward the droplet interior, enabling uniform particle deposition. At lower SiO<sub>2</sub>-PNIPAM contents, heteroaggregation between SiO<sub>2</sub> and SiO<sub>2</sub>-PNIPAM particles results in disordered patterns. This study exploits tunable interfacial behaviors of functional particles to partially incorporate them into conventional colloidal systems, demonstrating a simple, cost-effective strategy for mitigating inhomogeneous drying patterns.2025-11-25T21:03:38ZDatasetMediainfo:eu-repo/semantics/publishedVersiondataset10.1021/acs.macromol.5c02502.s002https://figshare.com/articles/media/Thermoresponsive_PNIPAM-Grafted_Silica_Particles_for_Modulating_Coffee-Ring_Effects_in_Drying_Colloidal_Droplets/30715627CC BY-NC 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/307156272025-11-25T21:03:38Z |
| spellingShingle | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets Seong Hwan Kim (2861699) Cell Biology Biotechnology Ecology Infectious Diseases Virology Space Science Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified outward capillary flow induced interfacial flow conventional colloidal systems colloidal suspension droplets grafted silica particles drive unmodified sio 2 </ sub n </ thermoresponsive pnipam suppressing coffee sufficiently strong ring formation ring effects particles undergo particles toward partially incorporate modulating coffee mixed suspensions lower sio hydrophobic transition functional particles effective strategy drying patterns droplet interior disordered patterns |
| status_str | publishedVersion |
| title | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| title_full | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| title_fullStr | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| title_full_unstemmed | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| title_short | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| title_sort | Thermoresponsive PNIPAM-Grafted Silica Particles for Modulating Coffee-Ring Effects in Drying Colloidal Droplets |
| topic | Cell Biology Biotechnology Ecology Infectious Diseases Virology Space Science Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified outward capillary flow induced interfacial flow conventional colloidal systems colloidal suspension droplets grafted silica particles drive unmodified sio 2 </ sub n </ thermoresponsive pnipam suppressing coffee sufficiently strong ring formation ring effects particles undergo particles toward partially incorporate modulating coffee mixed suspensions lower sio hydrophobic transition functional particles effective strategy drying patterns droplet interior disordered patterns |