On adhesion mechanism of salivary pellicle-PDMS interface
The adsorption behaviour of salivary proteins on polydimethylsiloxane (PDMS) surface was investigated here, aiming to fully understand the interfacial adhesion mechanism. Human whole saliva was derived from a healthy donor. Adsorption kinetics of salivary proteins on PDMS surface was examined by qua...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-07-01
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| Series: | Biosurface and Biotribology |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/bsbt.2019.0014 |
| _version_ | 1818333108962852864 |
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| author | Genlei Ma Yue Tang Qihang Zeng Qihang Zeng Jing Zheng |
| author_facet | Genlei Ma Yue Tang Qihang Zeng Qihang Zeng Jing Zheng |
| author_sort | Genlei Ma |
| collection | DOAJ |
| description | The adsorption behaviour of salivary proteins on polydimethylsiloxane (PDMS) surface was investigated here, aiming to fully understand the interfacial adhesion mechanism. Human whole saliva was derived from a healthy donor. Adsorption kinetics of salivary proteins on PDMS surface was examined by quartz crystal microbalance with dissipation (QCM-D). The morphology and shear energy of the salivary pellicle were characterised using nano-scratch technique, and its adhesion force was measured by means of atomic force microscopy. Results show that a rough but dense viscoelastic pellicle with a high binding strength is formed on the PDMS surface through the adsorption of salivary proteins. Saliva adsorption obviously increases the PDMS surface wettability but has no influence on its zeta potential. The adhesion force of the pellicle is near zero initially, but it increases significantly with the time. In summary, no electrostatic interaction occurs at the salivary pellicle-PDMS interface. The bonding of salivary pellicle to PDMS surface is mainly resulted from hydrophobic interaction and is time-dependent. |
| first_indexed | 2024-12-13T13:46:24Z |
| format | Article |
| id | doaj.art-f9d49342fc1f4c1993ae4eeb63439e3c |
| institution | Directory Open Access Journal |
| issn | 2405-4518 |
| language | English |
| last_indexed | 2024-12-13T13:46:24Z |
| publishDate | 2019-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Biosurface and Biotribology |
| spelling | doaj.art-f9d49342fc1f4c1993ae4eeb63439e3c2022-12-21T23:43:24ZengWileyBiosurface and Biotribology2405-45182019-07-0110.1049/bsbt.2019.0014BSBT.2019.0014On adhesion mechanism of salivary pellicle-PDMS interfaceGenlei Ma0Yue Tang1Qihang Zeng2Qihang Zeng3Jing Zheng4Southwest Jiaotong UniversitySouthwest Jiaotong UniversitySouthwest Jiaotong UniversitySouthwest Jiaotong UniversitySouthwest Jiaotong UniversityThe adsorption behaviour of salivary proteins on polydimethylsiloxane (PDMS) surface was investigated here, aiming to fully understand the interfacial adhesion mechanism. Human whole saliva was derived from a healthy donor. Adsorption kinetics of salivary proteins on PDMS surface was examined by quartz crystal microbalance with dissipation (QCM-D). The morphology and shear energy of the salivary pellicle were characterised using nano-scratch technique, and its adhesion force was measured by means of atomic force microscopy. Results show that a rough but dense viscoelastic pellicle with a high binding strength is formed on the PDMS surface through the adsorption of salivary proteins. Saliva adsorption obviously increases the PDMS surface wettability but has no influence on its zeta potential. The adhesion force of the pellicle is near zero initially, but it increases significantly with the time. In summary, no electrostatic interaction occurs at the salivary pellicle-PDMS interface. The bonding of salivary pellicle to PDMS surface is mainly resulted from hydrophobic interaction and is time-dependent.https://digital-library.theiet.org/content/journals/10.1049/bsbt.2019.0014viscoelasticityhydrophobicitymolecular biophysicsatomic force microscopypolymersadsorptionadhesionelectrokinetic effectswettingsalivary pellicle-PDMS interfaceadsorption behavioursalivary proteinsinterfacial adhesion mechanismadsorption kineticsadhesion forceatomic force microscopysaliva adsorptionPDMS surface wettabilityadhesion mechanismpolydimethylsiloxane surfaceshear energynanoscratch techniquedense viscoelastic pelliclehigh binding strengthzeta potentialelectrostatic interactionhydrophobic interaction |
| spellingShingle | Genlei Ma Yue Tang Qihang Zeng Qihang Zeng Jing Zheng On adhesion mechanism of salivary pellicle-PDMS interface Biosurface and Biotribology viscoelasticity hydrophobicity molecular biophysics atomic force microscopy polymers adsorption adhesion electrokinetic effects wetting salivary pellicle-PDMS interface adsorption behaviour salivary proteins interfacial adhesion mechanism adsorption kinetics adhesion force atomic force microscopy saliva adsorption PDMS surface wettability adhesion mechanism polydimethylsiloxane surface shear energy nanoscratch technique dense viscoelastic pellicle high binding strength zeta potential electrostatic interaction hydrophobic interaction |
| title | On adhesion mechanism of salivary pellicle-PDMS interface |
| title_full | On adhesion mechanism of salivary pellicle-PDMS interface |
| title_fullStr | On adhesion mechanism of salivary pellicle-PDMS interface |
| title_full_unstemmed | On adhesion mechanism of salivary pellicle-PDMS interface |
| title_short | On adhesion mechanism of salivary pellicle-PDMS interface |
| title_sort | on adhesion mechanism of salivary pellicle pdms interface |
| topic | viscoelasticity hydrophobicity molecular biophysics atomic force microscopy polymers adsorption adhesion electrokinetic effects wetting salivary pellicle-PDMS interface adsorption behaviour salivary proteins interfacial adhesion mechanism adsorption kinetics adhesion force atomic force microscopy saliva adsorption PDMS surface wettability adhesion mechanism polydimethylsiloxane surface shear energy nanoscratch technique dense viscoelastic pellicle high binding strength zeta potential electrostatic interaction hydrophobic interaction |
| url | https://digital-library.theiet.org/content/journals/10.1049/bsbt.2019.0014 |
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