Shang Dengkui, Zhou Nifan, Dai Zhengguan, Song Nengyu, Wang Zongrong, Du Piyi
State Key Lab of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou Zhejiang province 310027 China
AL Mine Co., Ltd Jiande Zhejiang province 311600 China.
RSC Adv. 2022 May 5;12(22):13600-13608. doi: 10.1039/d2ra02025d.
In order to prepare calcium carbonate nanoparticles in a green and environmentally friendly way, the concept of bio-mineralization has been proposed. Glucose, as a common small molecular organic substance found in organisms, participates in the mineralization process in cells. By adding glucose as a chemical additive, long chains of calcium carbonate form at the initial stage and then break granularly over-carbonation. The average size of the calcium carbonate nanoparticles is about 40 nm based on the statistical analyses of three hundred particles. The growth mechanism of calcium carbonate under the influence of glucose is obtained. After the calcium carbonate nanoparticles are modified by sodium stearate, they are introduced to the PDMS matrix to achieve the composite material. Compared with pure PDMS, the composite with additional 3% calcium carbonate has its elongation at break and tensile strength increased by 23.96% and 48.15%, respectively.
为了以绿色环保的方式制备碳酸钙纳米颗粒，人们提出了生物矿化的概念。葡萄糖作为生物体中常见的小分子有机物质，参与细胞内的矿化过程。通过添加葡萄糖作为化学添加剂，初始阶段会形成碳酸钙长链，然后在过碳化时颗粒状断裂。基于对三百个颗粒的统计分析，碳酸钙纳米颗粒的平均尺寸约为40纳米。得出了葡萄糖影响下碳酸钙的生长机制。碳酸钙纳米颗粒经硬脂酸钠改性后，被引入聚二甲基硅氧烷（PDMS）基体中以制成复合材料。与纯PDMS相比，添加3%碳酸钙的复合材料的断裂伸长率和拉伸强度分别提高了23.96%和48.15%。
