TY  - JOUR
A1  - Leiendecker, Mai-Thi
A1  - Licht, Christopher J.
A1  - Borghs, Jannik
A1  - Mooney, David J.
A1  - Zimmermann, Marc
A1  - Böker, Alexander
T1  - Physical polyurethane hydrogels via charge shielding through acids or salts
JF  - Macromolecular rapid communications
N2  - Physical hydrogels with tunable stress-relaxation and excellent stress recovery are formed from anionic polyurethanes via addition of acids, monovalent salts, or divalent salts. Gel properties can be widely adjusted through pH, salt valence, salt concentration, and monomer composition. We propose and investigate a novel gelation mechanism based on a colloidal system interacting through charge repulsion and chrage shielding, allowing a broad use of the material, from acidic (pH 4–5.5) to pH-neutral hydrogels with Young's moduli ranging from 10 to 140 kPa.
KW  - acidic crosslinking
KW  - charge repulsion
KW  - charge shielding
KW  - ionic crosslinking
KW  - physical hydrogels
KW  - polyurethanes
KW  - stress recovery
KW  - stress-relaxation
Y1  - 2018
U6  - https://doi.org/10.1002/marc.201700711
SN  - 1022-1336
SN  - 1521-3927
VL  - 39
IS  - 7
PB  - Wiley-VCH
CY  - Weinheim
ER  -