文献类型：期刊文献

英文题名：Synthesis of poly(acrylic acid)-Fe³⁺/gelatin/poly(vinyl alcohol) triple-network supramolecular hydrogels with high toughness, high strength and self-healing properties

作者：Jing, Zhanxin[1];Zhang, Qiangshan[1];Liang, Yan-Qiu[1];Zhang, Zhaoxia[1];Hong, Pengzhi[1];Li, Yong[1]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm, Zhanjiang 524088, Guangdong, Peoples R China

年份：2019

卷号：68

期号：10

起止页码：1710

外文期刊名：POLYMER INTERNATIONAL

收录：SCI-EXPANDED(收录号：WOS:000479508800001)、、WOS

基金：This work was supported financially by the Natural Science Foundation of Guangdong Province (2018A03037020), College Youth Innovation Talents Project of Guangdong Province (2017KQNCX089), Science and Technology Plan Project of Zhanjiang City (2017A02016), Program for Scientific Research Start-up Funds of Guangdong Ocean University (R19010), Project of Enhance School with Innovation of Guangdong Ocean University (Q18304) and 2018 "Sea Sail-Sailing Plan" Scientific and Technological Innovation Training Program of Guangdong Ocean University for College Students (qhjhzr201806).

语种：英文

外文关键词：supramolecular; triple network; hydrogels; self-healing

外文摘要：Hydrogels with good mechanical and self-healing properties are of great importance for various applications. Poly(acrylic acid)-Fe3+/gelatin/poly(vinyl alcohol) (PAA-Fe3+/Gelatin/PVA) triple-network supramolecular hydrogels were synthesized by a simple one-pot method of copolymerization, cooling and freezing/thawing. The PAA-Fe3+/Gelatin/PVA triple-network hydrogels exhibit superior toughness, strength and recovery capacity compared to single- and double-network hydrogels. The mechanical properties of the synthesized hydrogels could be tailored by adjusting the compositions. The PAA-Fe3+/Gelatin/PVA triple-network hydrogel with 0.20 mmol Fe3+, 3% gelatin and 15% PVA could achieve good mechanical properties, the tensile strength and elongation at break being 239.6 kPa and 12.8 mm mm(-1), respectively, and the compression strength reaching 16.7 MPa under a deformation of about 91.5%. The synthesized PAA-Fe3+/Gelatin/PVA triple-network hydrogels have good self-healing properties owing to metal coordination between Fe3+ and carboxylic groups, hydrogen bonding between the gelatin chains and hydrogen bonding between the PVA chains. Healed PAA-Fe3+(0.20)/Gelatin3%/PVA15% triple-network hydrogels sustain a tensile strength of up to 231.4 kPa, which is around 96.6% of the tensile strength of the original samples. Therefore, the synthesized triple-network supramolecular hydrogels would provide a new strategy for gel research and expand the potential for their application. (c) 2019 Society of Chemical Industry