Influence of Aspartate Moieties on the Self-Healing Behavior of Histidine-Rich Supramolecular Polymers

被引：8
作者：
Enke, Marcel [1 ,2 ]
Koeps, Lukas [1 ,2 ]
Zechel, Stefan [1 ,2 ]
Brendel, Johannes C. [1 ,2 ]
Vitz, Juergen [1 ,2 ]
Hager, Martin D. [1 ,2 ]
Schubert, Ulrich S. [1 ,2 ]
机构：
[1] Friedrich Schiller Univ Jena, Lab Organ & Macromol Chem IOMC, Humboldtstr 10, D-07743 Jena, Germany
[2] Friedrich Schiller Univ Jena, Jena Ctr Soft Matter JCSM, Philosophenweg 7, D-07743 Jena, Germany
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2018年 / 39卷 / 17期
关键词：
bioinspired polymers; isothermal titration calorimetry; postpolymerization functionalization; self-healing polymers; zinc-histidine interactions; METAL-IONS; CHEMISTRY; ZINC;
D O I：
10.1002/marc.201700742
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Aspartate incorporated into the protein structure of mussel byssal threads is believed to play an important role, besides the reversible histidine-zinc interactions, in the self-healing behavior of mussel byssal threads. Therefore, copolymers containing both aspartate and histidine moieties are synthesized in order to investigate the influence of aspartate on the complexation of zinc(II) as well as on the self-healing behavior and the mechanical properties of the resulting supramolecular networks. For this purpose, isothermal titration calorimetry measurements of a model aspartate compound as well as of these copolymers are performed and the thermodynamic parameters are utilized for the design of self-healing copolymers. For this purpose, n-lauryl methacrylate-based copolymers containing histidine and aspartate are synthesized and crosslinked with zinc(II) acetate. The self-healing behavior of the supramolecular networks is investigated using scratch healing tests and the mechanical properties by nanoindentation.
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页数：6
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