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| Design Strategy and Application Progress of Lignin-based Hydrogel Materials |
| Received:March 20, 2023 |
| DOI：10.11981/j.issn.1000-6842.2023.03.79 |
| Key Words:lignin;hydrogel;preparation method;application status;limitation |
| Author Name | Affiliation | Postcode | | XU Tingting* | College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 | | GU Xunhong | College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 | | GAO Huanli | College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 | | DAI Hongqi | College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | 210037 |
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| Abstract: |
| Lignin is the second most abundant natural polymer in nature and one of the rare renewable resources among aromatic compounds. As the main by-product of pulp and paper industry， lignin is cheap and easy to obtain. Due to its three-dimensional network structure and abundant active functional groups such as alcohol hydroxyl group， phenol hydroxyl group and double bond， lignin has many advantages such as antibacterial， anti-inflammatory and adsorption， and is an ideal material for preparing hydrogels. Unfortunately， due to the complex structure， high spatial resistance and insufficient reactivity of lignin， it is difficult to purify. The high value and industrial utilization of lignin are low. Using lignin and its derivatives to prepare hydrogels not only broadens its application range， but also solves the problems such as poor biocompatibility problems existing in the synthetic polymer hydrogels. Based on this， starting from the structure and properties of lignin， this paper summarized the main preparation methods， advantages and disadvantages of lignin-based hydrogel materials， and summarized its application status in biomedicine， sewage treatment， agriculture， electronic devices and other aspects. The limitations of the current research on lignin-based hydrogels and the possible future research prospects were also proposed. |
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