Macromolecular rapid communications · 2022
Janus Nanoparticle Coupled Double-Network Hydrogel.
СтатьяНазвание и аннотация: Перевод в очереди
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Hou Hanyi, Yang Tiantian, Zhao Yanran, Qi Meiyuan, Song Zhining, Xiao Yi, Xu Lai, Qu Xiaozhong, Liang Fuxin, Yang Zhenzhong
Аннотация
For double network (DN) hydrogels, their performance can be tuned by adjusting the interaction between their two networks. A novel DN hydrogel toughening approach is proposed by employing Janus nanoparticles (JNs) as crosslinkers to gain a conjoined-network hydrogel. First, a kind of JNs modified by amino groups and quaternary ammonium salt is synthesized, named R3 N+ -JN-NH2 . The DN hydrogel is fabricated based on ionic coordination between calcium chloride (CaCl2 ) and sodium alginate (Alg), as well as covalent (benzoic imine) between glycol chitosan (GC) and benzaldehyde-capped poly(ethylene oxide) (BzCHO-PEO-BzCHO). Based on the same covalent and ionic dynamic crosslinking mechanism, the added R3 N+ -JN-NH2 interacts with two networks to promote crosslinking to form a dually crosslinked structure. The R3 N+ -JN-NH2 effectively provides more energy dissipation, and the hydrogel with conjoined networks shows better compression resistance.