4.6 Article

Tough and self-healing hydrophobic association hydrogels with cationic surfactant

期刊

JOURNAL OF APPLIED POLYMER SCIENCE
卷 138, 期 27, 页码 -

出版社

WILEY
DOI: 10.1002/app.50645

关键词

addition polymerization; colloids; copolymers; micelles; polyolefins

资金

  1. Fundamental Research Funds for the Central Universities [18CX02159A]
  2. National Natural Science Foundation of China [51704310 51991361]

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Hydrophobic association (HA) hydrogels with outstanding mechanical properties and self-healing capabilities were successfully synthesized through micellar copolymerization, showing promise for applications in biomedicine and 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.

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