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Tough and self‐healing hydrophobic association hydrogels with cationic surfactant
Author(s) -
Zhao Zhen,
Bai Yingrui,
Sun Jinsheng,
Lv Kaihe,
Lei Shaofei,
Qiu Jiaxian
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50645
Subject(s) - self healing hydrogels , cationic polymerization , ammonium bromide , ammonium persulfate , pulmonary surfactant , micelle , copolymer , chemical engineering , polymer chemistry , methacrylate , materials science , hydrophobe , chemistry , polymerization , polymer , aqueous solution , organic chemistry , composite material , engineering
Hydrophobic association (HA) hydrogels with outstanding mechanical, rheological and recovery properties were successfully synthesized by micellar copolymerization of acrylamide with lauryl methacrylate. The synthesis occurred at room temperature and the synthesis condition was moderate by using the redox initiator system of Ammonium persulfate ‐ sodium bisulfite as initiators. Cationic surfactant (dodecyl trimethyl ammonium bromide) was utilized to form micelles with hydrophobe, served as physical cross‐linking points in the 3D networks of hydrogels. The HA hydrogels showed a high tensile strength of 181 kPa, superior stretchability of 2300% and excellent toughness of 2.16 MJ m −3 . Moreover, they owned extraordinary self‐recovery under different conditions. It is hopeful that the hydrogels with superior mechanical strength and self‐healing properties would be applied to the fields of biomedicine and engineering. Meanwhile, based on above materials, HA hydrogels could also be synthesized with the combination of hydrophobic association and other synergistic effects, such as latex particles, electrostatic effect and nanoparticles.