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| Preparation and Properties of Cellulose/Polyacrylamide Double-network Hydrogels Based on AlCl3/ZnCl2 Aqueous System Construction |
| Received:May 05, 2023 |
| DOI：10.11981/j.issn.1000-6842.2023.03.89 |
| Key Words:dissolved cellulose;acrylamide;double-network hydrogels;ionic conductivity;mechanical property |
| Fund Project:国家自然科学基金（32171723）。 |
| Author Name | Affiliation | Postcode | | WANG Youlong* | College of Light Industry and Food Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 | | LI Xin | College of Light Industry and Food Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 | | TIAN Yahui | College of Light Industry and Food Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 | | MA Jinxia | College of Light Industry and Food Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 |
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| Abstract: |
| In recent years， ionic conductive hydrogels with good mechanical properties and freezing-tolerant have attracted great attention in the fields of artificial intelligence， biomedicine， and flexible sensor. In this work， AlCl3/ZnCl2 aqueous system was used as the mild solvent of cellulose raw material to dissolve cellulose. The intrinsic metal ions in the solvent system were effectively utilized to catalyze the polymerization of acrylamide （AM） monomer， resulting in a tight link between the polyacrylamide （PAM） network and the cellulose network. The multifunctional hydrogel with cellulose/polyacrylamide double-network was prepared. The mechanical and electrochemical properties of hydrogels were regulated by controlling the mass ratio of acrylamide to cellulose. The results showed that the metal ions in AlCl3/ZnCl2 aqueous system endowed the hydrogels with excellent freezing-tolerant ability （it can work normally at -45 ℃） and ionic conductivity （2.04 S/m）. The second polymerization network constructed by polyacrylamide was strategic， and effectively improved the mechanical properties of the hydrogels. Besides， the double-network hydrogels exhibited good elastic properties in 10 compression cycles， and showed strong adhesion to different material interfaces. |
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