Yuan Wei, Wang Fangfang, Qu Xinyu, Wang Siying, Lei Bing, Shao Jinjun, Wang Qian, Lin Jianjian, Wang Wenjun, Dong Xiaochen
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), School of Physical and Mathematical Sciences, Nanjing Tech University (NanjingTech) Nanjing 211816 China
School of Physical Science and Information Technology, Liaocheng University Liaocheng 252059 China.
Nanoscale Adv. 2023 Mar 7;5(7):1999-2009. doi: 10.1039/d3na00038a. eCollection 2023 Mar 28.
The development of fast and economical hydrogel manufacturing methods is crucial for expanding the application of hydrogels. However, the commonly used rapid initiation system is not conducive to the performance of hydrogels. Therefore, the research focuses on how to improve the preparation speed of hydrogels and avoid affecting the properties of hydrogels. Herein, a redox initiation system with nanoparticle-stabilized persistent free radicals was introduced to rapidly synthesize high-performance hydrogels at room temperature. A redox initiator composed of vitamin C and ammonium persulfate rapidly provides hydroxyl radicals at room temperature. Simultaneously, three-dimensional nanoparticles can stabilize free radicals and prolong their lifetime, thereby increasing the free radical concentration and accelerating the polymerization rate. And casein enabled the hydrogel to achieve impressive mechanical properties, adhesion, and electrical conductivity. This method greatly facilitates the rapid and economical synthesis of high-performance hydrogels and presents broad application prospects in the field of flexible electronics.
开发快速且经济的水凝胶制造方法对于扩大水凝胶的应用至关重要。然而，常用的快速引发体系不利于水凝胶的性能。因此，研究重点在于如何提高水凝胶的制备速度并避免影响水凝胶的性能。在此，引入了一种具有纳米颗粒稳定的持久性自由基的氧化还原引发体系，以在室温下快速合成高性能水凝胶。由维生素C和过硫酸铵组成的氧化还原引发剂在室温下能快速提供羟基自由基。同时，三维纳米颗粒可以稳定自由基并延长其寿命，从而提高自由基浓度并加快聚合速率。而且酪蛋白使水凝胶具有令人印象深刻的机械性能、粘附性和导电性。该方法极大地促进了高性能水凝胶的快速且经济的合成，并在柔性电子领域展现出广阔的应用前景。
