Janus Nanoparticle Coupled Double-Network Hydrogel

被引：11
作者：
Hou, Hanyi [1 ]
Yang, Tiantian [1 ,4 ]
Zhao, Yanran [3 ]
Qi, Meiyuan [1 ]
Song, Zhining [1 ]
Xiao, Yi [2 ]
Xu, Lai [2 ]
Qu, Xiaozhong [3 ]
Liang, Fuxin [1 ]
Yang, Zhenzhong [1 ]
机构：
[1] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
[2] Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Gen Surg, Beijing 100730, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Liaoning Univ, Liaoning Prov Key Lab Green Synth & Preparat Chem, Shenyang 110036, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2022年 / 43卷 / 17期
基金：
中国国家自然科学基金;
关键词：
crosslinkers; double network hydrogels; highly tough strength; Janus nanoparticles; NANOCOMPOSITE HYDROGEL; CROSS-LINKING; HIGH-STRENGTH; POLYMER; STRAIN; TOUGH; RECOVERY;
D O I：
10.1002/marc.202200157
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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 R3N+-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 R3N+-JN-NH2 interacts with two networks to promote crosslinking to form a dually crosslinked structure. The R3N+-JN-NH2 effectively provides more energy dissipation, and the hydrogel with conjoined networks shows better compression resistance.
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页数：8
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