TY - JOUR
T1 - Chemically responsive hydrogel deformation mechanics
T2 - A review
AU - Fennell, Eanna
AU - Huyghe, Jacques M.
N1 - Publisher Copyright:
© 2019 by the authors.
PY - 2019/9/28
Y1 - 2019/9/28
N2 - A hydrogel is a polymeric three-dimensional network structure. The applications of this material type are diversified over a broad range of fields. Their soft nature and similarity to natural tissue allows for their use in tissue engineering, medical devices, agriculture, and industrial health products. However, as the demand for such materials increases, the need to understand the material mechanics is paramount across all fields. As a result, many attempts to numerically model the swelling and drying of chemically responsive hydrogels have been published. Material characterization of the mechanical properties of a gel bead under osmotic loading is difficult. As a result, much of the literature has implemented variants of swelling theories. Therefore, this article focuses on reviewing the current literature and outlining the numerical models of swelling hydrogels as a result of exposure to chemical stimuli. Furthermore, the experimental techniques attempting to quantify bulk gel mechanics are summarized. Finally, an overview on the mechanisms governing the formation of geometric surface instabilities during transient swelling of soft materials is provided.
AB - A hydrogel is a polymeric three-dimensional network structure. The applications of this material type are diversified over a broad range of fields. Their soft nature and similarity to natural tissue allows for their use in tissue engineering, medical devices, agriculture, and industrial health products. However, as the demand for such materials increases, the need to understand the material mechanics is paramount across all fields. As a result, many attempts to numerically model the swelling and drying of chemically responsive hydrogels have been published. Material characterization of the mechanical properties of a gel bead under osmotic loading is difficult. As a result, much of the literature has implemented variants of swelling theories. Therefore, this article focuses on reviewing the current literature and outlining the numerical models of swelling hydrogels as a result of exposure to chemical stimuli. Furthermore, the experimental techniques attempting to quantify bulk gel mechanics are summarized. Finally, an overview on the mechanisms governing the formation of geometric surface instabilities during transient swelling of soft materials is provided.
KW - Chemically-responsive
KW - Finite deformation
KW - Hydrogel mechanics
KW - Hydrogels
KW - Kinetics
KW - Osmotic swelling
KW - Superabsorbent polymers
KW - Surface instabilities
KW - Thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=85072721544&partnerID=8YFLogxK
U2 - 10.3390/molecules24193521
DO - 10.3390/molecules24193521
M3 - Review article
C2 - 31569433
AN - SCOPUS:85072721544
SN - 1420-3049
VL - 24
JO - Molecules
JF - Molecules
IS - 19
M1 - 3521
ER -