A Robust, Self-Healable, and Shape Memory Supramolecular Hydrogel by Multiple Hydrogen Bonding Interactions

被引：106
作者：
Feng, Zhanbin [1 ]
Zuo, Hongli [1 ]
Gao, Weisheng [1 ]
Ning, Nanying [1 ,2 ]
Tian, Ming [1 ,2 ]
Zhang, Liqun [1 ,2 ]
机构：
[1] Minist Educ, Key Lab Carbon Fiber & Funct Polymers, 15 Bei San Huan East Rd, Beijing 100029, Peoples R China
[2] Beijing Adv Innovat Ctr Soft Matter Sci & Engn, 15 Bei San Huan East Rd, Beijing 100029, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2018年 / 39卷 / 20期
基金：
中国国家自然科学基金;
关键词：
DN hydrogel; multiple hydrogen bonding; self-healing; shape memory; DOUBLE-NETWORK HYDROGELS; HIGH MECHANICAL STRENGTH; BIOMEDICAL APPLICATIONS; HEALING PROPERTIES; BIOMATERIALS; GLYCOL);
D O I：
10.1002/marc.201800138
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A versatile double-network (DN) hydrogel with two noncovalent crosslinked networks is synthesized by multiple hydrogen bonding (H-bonding) interactions. The DN hydrogels are synthesized via a heating-cooling photopolymerization process by adding all reactants of agar, N-acryloyl glycinamide (NAGA) and N-benzylacrylamide (NBAA) monomers, UV initiators to a single water pot. Poly(N-acryloyl glycinamide-co-N-benzyl acrylamide) (P(NAGA-co-NBAA)) with a triple amide in one side group is synthesized via UV-light polymerization between NAGA and NBAA, forming a strong intermolecular H-bonding network. Meanwhile, the intramolecular H-bonding network is formed between P(NAGA-co-NBAA) and agars. The sol-gel phase transition of agars at 86 degrees C generates the molecular entanglement network. Such a double network enables the hydrogel high self-healing efficiency (about 95%), good shape memory ability, and high mechanical strength (1.1 MPa). Additionally, the DN hydrogel is completely crosslinked by multiple hydrogen bonds (H-bonds) and the physical crosslinking of agar without extra potential toxic chemical crosslinker. The DN hydrogels find extensive applications in the biomedical materials due to their excellent biocompatibility.
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页数：7
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