Details
| Original language | English |
|---|---|
| Article number | 106943 |
| Journal | Polymer testing |
| Volume | 93 |
| Early online date | 4 Nov 2020 |
| Publication status | Published - Jan 2021 |
Abstract
Hydrogels, based on polymerized ionic liquids, are increasingly used in the medical and pharmaceutical industry as implants, drug delivery systems, contact lens material, bone substitutes and stent coatings. Therefore they need to be biocompatible, flexible and resistant to external stress. In order to meet these requirements, there is a large interest in design, synthesis and characterization of these interesting polymers. In this work, mechanical properties such as gelation kinetics, shear strain resistance, and response to compression and stretching of ten different polymerized ionic liquid-based hydrogels were examined, completing the picture of the rheological behavior of these materials. Interestingly, the investigations of stretching measurements showed a wide range of critical strains leading to failure from 4.8 ± 1.1 to 47.9 ± 15.1%and in compression measurements critical strain from 7.8 ± 3.6 to higher than 59.8 ± 17.3%, as well as a linear viscoelastic range in shear from 14 ± 8 to 267 ± 26%. These results allow improved design with a “choose-the-best-material”-toolbox for medical applications.
Keywords
- Hydrogel, Mechanical characterization, Polymerized ionic liquids, Rheological characterization
ASJC Scopus subject areas
- Chemistry(all)
- Organic Chemistry
- Materials Science(all)
- Polymers and Plastics
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In: Polymer testing, Vol. 93, 106943, 01.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Rheological properties of hydrogels based on ionic liquids
AU - Jastram, A.
AU - Claus, J.
AU - Janmey, P. A.
AU - Kragl, U.
N1 - Funding Information: Funding by the Federal Ministry of Education and Research within RESPONSE “Partnership for Innovation in Implant Technology” ( FKZ 03ZZ0910B ) and the Deutsche Forschungsgemeinschaft (DFG; grant KR 2491/12-2 ) as well as the HERMES research funding of the University of Rostock and the US NSF-16 DMR-1720530 is gratefully acknowledged. We also thank Emile Kraus for technical support.
PY - 2021/1
Y1 - 2021/1
N2 - Hydrogels, based on polymerized ionic liquids, are increasingly used in the medical and pharmaceutical industry as implants, drug delivery systems, contact lens material, bone substitutes and stent coatings. Therefore they need to be biocompatible, flexible and resistant to external stress. In order to meet these requirements, there is a large interest in design, synthesis and characterization of these interesting polymers. In this work, mechanical properties such as gelation kinetics, shear strain resistance, and response to compression and stretching of ten different polymerized ionic liquid-based hydrogels were examined, completing the picture of the rheological behavior of these materials. Interestingly, the investigations of stretching measurements showed a wide range of critical strains leading to failure from 4.8 ± 1.1 to 47.9 ± 15.1%and in compression measurements critical strain from 7.8 ± 3.6 to higher than 59.8 ± 17.3%, as well as a linear viscoelastic range in shear from 14 ± 8 to 267 ± 26%. These results allow improved design with a “choose-the-best-material”-toolbox for medical applications.
AB - Hydrogels, based on polymerized ionic liquids, are increasingly used in the medical and pharmaceutical industry as implants, drug delivery systems, contact lens material, bone substitutes and stent coatings. Therefore they need to be biocompatible, flexible and resistant to external stress. In order to meet these requirements, there is a large interest in design, synthesis and characterization of these interesting polymers. In this work, mechanical properties such as gelation kinetics, shear strain resistance, and response to compression and stretching of ten different polymerized ionic liquid-based hydrogels were examined, completing the picture of the rheological behavior of these materials. Interestingly, the investigations of stretching measurements showed a wide range of critical strains leading to failure from 4.8 ± 1.1 to 47.9 ± 15.1%and in compression measurements critical strain from 7.8 ± 3.6 to higher than 59.8 ± 17.3%, as well as a linear viscoelastic range in shear from 14 ± 8 to 267 ± 26%. These results allow improved design with a “choose-the-best-material”-toolbox for medical applications.
KW - Hydrogel
KW - Mechanical characterization
KW - Polymerized ionic liquids
KW - Rheological characterization
UR - http://www.scopus.com/inward/record.url?scp=85095841216&partnerID=8YFLogxK
U2 - 10.1016/j.polymertesting.2020.106943
DO - 10.1016/j.polymertesting.2020.106943
M3 - Article
AN - SCOPUS:85095841216
VL - 93
JO - Polymer testing
JF - Polymer testing
SN - 0142-9418
M1 - 106943
ER -