Nanotribology of hydrogels with similar stiffness but different polymer and crosslinker concentrations
Copyright © 2019 Elsevier Inc. All rights reserved..
HYPOTHESIS: The stiffness has been found to regulate hydrogel performances and applications. However, the key interfacial properties of hydrogels, like friction and adhesion are not controlled by the stiffness, but are altered by the structure and composition of hydrogels, like polymer volume fraction and crosslinking degree.
EXPERIMENTS: Colloidal probe atomic force microscopy has been use to investigate the relationship between tribological properties (friction and adhesion) and composition of hydrogels with similar stiffness, but different polymer volume fractions and crosslinking degrees.
FINDINGS: The interfacial normal and lateral (friction) forces of hydrogels are not directly correlated to the stiffness, but altered by the hydrogel structure and composition. For normal force measurements, the adhesion increases with polymer volume fraction but decreases with crosslinking degree. For lateral force measurements, friction increases with polymer volume fraction, but decreases with crosslinking degree. In the low normal force regime, friction is mainly adhesion-controlled and increases significantly with the adhesion and polymer volume fraction. In the high normal force regime, friction is predominantly load-controlled and shows slow increase with normal force.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:563 |
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| Enthalten in: |
Journal of colloid and interface science - 563(2020) vom: 15. März, Seite 347-353 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Li, Hua [VerfasserIn] |
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| Links: |
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| Themen: |
Adhesion |
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| Anmerkungen: |
Date Completed 19.02.2020 Date Revised 19.02.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jcis.2019.12.045 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM304876348 |
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| 245 | 1 | 0 | |a Nanotribology of hydrogels with similar stiffness but different polymer and crosslinker concentrations |
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| 500 | |a Date Revised 19.02.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2019 Elsevier Inc. All rights reserved. | ||
| 520 | |a HYPOTHESIS: The stiffness has been found to regulate hydrogel performances and applications. However, the key interfacial properties of hydrogels, like friction and adhesion are not controlled by the stiffness, but are altered by the structure and composition of hydrogels, like polymer volume fraction and crosslinking degree | ||
| 520 | |a EXPERIMENTS: Colloidal probe atomic force microscopy has been use to investigate the relationship between tribological properties (friction and adhesion) and composition of hydrogels with similar stiffness, but different polymer volume fractions and crosslinking degrees | ||
| 520 | |a FINDINGS: The interfacial normal and lateral (friction) forces of hydrogels are not directly correlated to the stiffness, but altered by the hydrogel structure and composition. For normal force measurements, the adhesion increases with polymer volume fraction but decreases with crosslinking degree. For lateral force measurements, friction increases with polymer volume fraction, but decreases with crosslinking degree. In the low normal force regime, friction is mainly adhesion-controlled and increases significantly with the adhesion and polymer volume fraction. In the high normal force regime, friction is predominantly load-controlled and shows slow increase with normal force | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Adhesion | |
| 650 | 4 | |a Colloidal probe atomic force microscopy | |
| 650 | 4 | |a Friction | |
| 650 | 4 | |a Hydrogel | |
| 700 | 1 | |a Choi, Yu Suk |e verfasserin |4 aut | |
| 700 | 1 | |a Rutland, Mark W |e verfasserin |4 aut | |
| 700 | 1 | |a Atkin, Rob |e verfasserin |4 aut | |
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