Cargando…
Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels
As an excellent model material for fundamental studies on temperature-sensitive hydrogels, poly(N-isopropylacrylamide) (NIPA) hydrogel has been applied in drug delivery, tissue engineering, and soft robotics. However, the lack of study on fracture and fatigue hinders further development of hydrogels...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9085498/ https://www.ncbi.nlm.nih.gov/pubmed/35548721 http://dx.doi.org/10.1039/c8ra06518g |
_version_ | 1784703832218927104 |
---|---|
author | Zhang, Ni Pan, Zhouzhou Lei, Jincheng Liu, Zishun |
author_facet | Zhang, Ni Pan, Zhouzhou Lei, Jincheng Liu, Zishun |
author_sort | Zhang, Ni |
collection | PubMed |
description | As an excellent model material for fundamental studies on temperature-sensitive hydrogels, poly(N-isopropylacrylamide) (NIPA) hydrogel has been applied in drug delivery, tissue engineering, and soft robotics. However, the lack of study on fracture and fatigue hinders further development of hydrogels for applications where cyclic loading–unloading is unavoidable. In this study, the fracture and fatigue damage of the NIPA hydrogel were studied for the first time by pure shear tests at different temperatures. Fracture behaviors were investigated under monotonic load from 31 °C to 39 °C. It is found that the fracture energy increases with the increase in temperature. The fracture energy is approximately 20 J m(−2) near the volume phase transition temperature. Temperature also significantly influences the fatigue life. By fitting the experimental data, the fatigue limit λ(f) is determined. The results obtained from the experimental tests would be important for the engineering applications of the NIPA hydrogels. |
format | Online Article Text |
id | pubmed-9085498 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90854982022-05-10 Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels Zhang, Ni Pan, Zhouzhou Lei, Jincheng Liu, Zishun RSC Adv Chemistry As an excellent model material for fundamental studies on temperature-sensitive hydrogels, poly(N-isopropylacrylamide) (NIPA) hydrogel has been applied in drug delivery, tissue engineering, and soft robotics. However, the lack of study on fracture and fatigue hinders further development of hydrogels for applications where cyclic loading–unloading is unavoidable. In this study, the fracture and fatigue damage of the NIPA hydrogel were studied for the first time by pure shear tests at different temperatures. Fracture behaviors were investigated under monotonic load from 31 °C to 39 °C. It is found that the fracture energy increases with the increase in temperature. The fracture energy is approximately 20 J m(−2) near the volume phase transition temperature. Temperature also significantly influences the fatigue life. By fitting the experimental data, the fatigue limit λ(f) is determined. The results obtained from the experimental tests would be important for the engineering applications of the NIPA hydrogels. The Royal Society of Chemistry 2018-09-03 /pmc/articles/PMC9085498/ /pubmed/35548721 http://dx.doi.org/10.1039/c8ra06518g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Zhang, Ni Pan, Zhouzhou Lei, Jincheng Liu, Zishun Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
title | Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
title_full | Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
title_fullStr | Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
title_full_unstemmed | Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
title_short | Effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
title_sort | effects of temperature on the fracture and fatigue damage of temperature sensitive hydrogels |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9085498/ https://www.ncbi.nlm.nih.gov/pubmed/35548721 http://dx.doi.org/10.1039/c8ra06518g |
work_keys_str_mv | AT zhangni effectsoftemperatureonthefractureandfatiguedamageoftemperaturesensitivehydrogels AT panzhouzhou effectsoftemperatureonthefractureandfatiguedamageoftemperaturesensitivehydrogels AT leijincheng effectsoftemperatureonthefractureandfatiguedamageoftemperaturesensitivehydrogels AT liuzishun effectsoftemperatureonthefractureandfatiguedamageoftemperaturesensitivehydrogels |