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Euryhaline Hydrogel with Constant Swelling and Salinity‐Enhanced Mechanical Strength in a Wide Salinity Range
Author(s) -
Gao Hainan,
Mao Jiale,
Cai Yudong,
Li Shuhong,
Fu Ye,
Liu Xiaolan,
Liang Haiyan,
Zhao Tianyi,
Liu Mingjie,
Jiang Lei
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202007664
Subject(s) - euryhaline , salinity , materials science , swelling , self healing hydrogels , seawater , chemical engineering , geology , oceanography , composite material , polymer chemistry , engineering
In nature, many biological organisms possess a unique osmoregulation feature that enables them to survive in environments of different salinity, which is called euryhaline characteristics (e.g., salmon that can survive in freshwater and seawater). Drawing inspiration from these salinity‐tolerant organisms, here a strategy that integrates two polymer chain segments with different salinity tolerances is reported to produce a euryhaline hydrogel with stable water retention, constant swelling properties, superoleophobicity, and low‐adhesion to oil in aqueous environments over a wide range of salinity. The formation of internal dynamic complementary crosslinks is a key structural factor of the euryhaline attributes. The euryhaline hydrogel‐coated meshes can be successfully utilized in various oil/aqueous phase separation in a wide range of salinity. Furthermore, by creating a double network with dynamic bonds, superior euryhaline hydrogel with unique salinity‐enhanced mechanical strength can be obtained. It is anticipated that the euryhaline hydrogel will have broad application prospects in complex and variable ionic environments.