| Autor: |
Pu L; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Yuan Z; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Cai Y; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Li X; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Xue Z; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Niu Y; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Li Y; Center of Advanced Carbon Materials, School of Chemical Engineering, University of New South Wales, Sydney NSW2052, Australia., Ma S; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China., Xu W; School of Chemistry and Materials Science, Ludong University, Yantai 264025, P. R. China.; Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, P. R. China. |
| Abstrakt: |
Currently, the development of hydrogels with excellent mechanical properties (elasticity, fatigue resistance, etc.) and conductive properties can better meet their needs in the field of flexible sensor device applications. Generally, hydrogels with a denser cross-linking density tend to have better mechanical properties, but the improvement in mechanical properties comes at the expense of reduced electrical conductivity. Directly generating CaCO 3 in the hydrogel prepolymer can not only increase the cross-linking density of its network but also introduce additional ions to enhance its internal ionic strength, which is beneficial to improving the conductivity of the hydrogel. It is still a big challenge to directly generate CaCO 3 in the static prepolymer solution and ensure its uniform dispersion in the hydrogel. Herein, we adopted an improved preparation method to ensure that the directly generated CaCO 3 particles can be evenly dispersed in the static prepolymer solution until the polymerization is completed. Finally, a PAM/PVA/CaCO 3 hydrogel with supertensile, compressive, toughness, and fatigue resistance properties was prepared. In addition, the presence of free Na + and Cl - gives the hydrogel excellent conductivity and sensing performance to monitor daily human activities. On the basis of the application of hydrogels in information communication, we have further deepened this application by combining the characteristics of hydrogels themselves. Combined with ASCII code, the hydrogel can also be applied in information exchange and information encryption and decryption, achieving the antitheft function in smart locks. A variety of excellent performance integrated PAM/PVA/CaCO 3 hydrogels have broad application prospects for flexible sensors, highlighting great potential in human-computer interaction and intelligent information protection. |
