文献类型：期刊文献

英文题名：Hydrogels from Amorphous Calcium Carbonate and Polyacrylic Acid: Bio-Inspired Materials for "Mineral Plastics"

作者：Sun, Shengtong[1,4];Mao, Li-Bo[2];Lei, Zhouyue[3];Yu, Shu-Hong[2];Coelfen, Helmut[1]

机构：[1]Univ Konstanz, Phys Chem, Univ Str 10, D-78457 Constance, Germany;[2]Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Lab Phys Sci Microscale, Dept Chem, Hefei 230026, Anhui, Peoples R China;[3]Fudan Univ, State Key Lab Mol Engn Polymers, Dept Macromol Sci, Adv Mat Lab, Shanghai 200433, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：55

期号：39

起止页码：11765

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20163002643190);WOS:【SCI-EXPANDED(收录号:WOS:000384713100006)】；

基金：We gratefully acknowledge the financial support from the Alexander von Humboldt Foundation. This work was also supported by the facilities in the Nanostructure Laboratory of the University of Konstanz. S.H.Y. thanks funding support from National Science Foundation of China (Grants 21431006, 21521001). S.T.S. thanks Marina Krumova for TEM imaging, Dingding Hu in Fudan University for rheological measurements.

语种：英文

外文关键词：amorphous calcium carbonate; bio-inspired synthesis; organic-inorganic hybrid composites; plasticity; supramolecular hydrogels

摘要：Given increasing environmental issues due to the large usage of non-biodegradable plastics based on petroleum, new plastic materials, which are economic, environmentally friendly, and recyclable are in high demand. One feasible strategy is the bio-inspired synthesis of mineral-based hybrid materials. Herein we report a facile route for an amorphous CaCO3 (ACC)-based hydrogel consisting of very small ACC nanoparticles physically cross-linked by poly(acrylic acid). The hydrogel is shapeable, stretchable, and self-healable. Upon drying, the hydrogel forms free-standing, rigid, and transparent objects with remarkable mechanical performance. By swelling in water, the material can completely recover the initial hydrogel state. As a matrix, thermochromism can also be easily introduced. The present hybrid hydrogel may represent a new class of plastic materials, the "mineral plastics".