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Robust supramolecular composite hydrogels for sustainable and “visible” agriculture irrigation
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2021-10-13 , DOI: 10.1039/d1ta05442b Chenfeng Ding 1, 2, 3 , Shuai Zhang 4 , Xuewei Fu 2 , Tuan Liu 2 , Lin Shao 2 , Mingen Fei 2 , Cheng Hao 2 , Yuan Liu 1, 3 , Wei-Hong Zhong 2
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2021-10-13 , DOI: 10.1039/d1ta05442b Chenfeng Ding 1, 2, 3 , Shuai Zhang 4 , Xuewei Fu 2 , Tuan Liu 2 , Lin Shao 2 , Mingen Fei 2 , Cheng Hao 2 , Yuan Liu 1, 3 , Wei-Hong Zhong 2
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To combat severe soil desertification and sandstorms, the application of appropriate hydrogels to dry land/desert is a promising solution to advance sustainable water irrigation and retention, and even realize “intelligent” agriculture. To this end, the development of a hydrogel with stable monitoring functions and good mechanical properties to maintain the swelling capability under soil would be significant for “intelligent” agriculture applications. Herein, we report a robust bio-based hydrogel with excellent mechanical properties and unique fluorescence performance for monitoring irrigation applications. This bio-hydrogel possesses a double cross-linked interpenetrating supramolecular network in a bacterial cellulose (BC) porous matrix, which provides its high tensile/compressive strength (∼0.96/1.3 MPa) and excellent Young's modulus (∼6.67 MPa, vs. 0.01–1.0 MPa for reported agricultural hydrogels), as well as high strength retention after experiencing repeated swelling/drying and long-term compressive processes. Furthermore, the hydrogel displays unique non-traditional fluorescence with excellent stability even under extreme environmental conditions, such as high/low temperature and various organic solvents. The excellent fluorescence characteristics offer the potential to realize “visualized” agricultural irrigation. This study not only provides a distinctive bio-based hydrogel with broadened applications, but also presents new insight to promote the development of sustainable agriculture.
中文翻译：
用于可持续和“可见”农业灌溉的坚固超分子复合水凝胶
为了应对严重的土壤荒漠化和沙尘暴，将适当的水凝胶应用于旱地/沙漠是推进可持续灌溉和蓄水甚至实现“智能”农业的有希望的解决方案。为此，开发具有稳定监测功能和良好机械性能以保持土壤膨胀能力的水凝胶对于“智能”农业应用具有重要意义。在此，我们报告了一种坚固的生物基水凝胶，具有优异的机械性能和独特的荧光性能，可用于监测灌溉应用。这种生物水凝胶在细菌纤维素 (BC) 多孔基质中具有双交联互穿超分子网络，可提供高拉伸/压缩强度 (~0.96/1.3 MPa) 和优异的杨氏模量 (~6.与报道的农业水凝胶的 0.01-1.0 MPa相比），以及在经历反复溶胀/干燥和长期压缩过程后的高强度保留。此外，即使在极端环境条件下，如高/低温和各种有机溶剂，水凝胶也显示出独特的非传统荧光和优异的稳定性。优异的荧光特性为实现“可视化”农业灌溉提供了潜力。该研究不仅提供了一种具有广泛应用的独特生物基水凝胶，而且为促进可持续农业的发展提供了新的见解。
更新日期：2021-10-27
中文翻译：
用于可持续和“可见”农业灌溉的坚固超分子复合水凝胶
为了应对严重的土壤荒漠化和沙尘暴，将适当的水凝胶应用于旱地/沙漠是推进可持续灌溉和蓄水甚至实现“智能”农业的有希望的解决方案。为此，开发具有稳定监测功能和良好机械性能以保持土壤膨胀能力的水凝胶对于“智能”农业应用具有重要意义。在此，我们报告了一种坚固的生物基水凝胶，具有优异的机械性能和独特的荧光性能，可用于监测灌溉应用。这种生物水凝胶在细菌纤维素 (BC) 多孔基质中具有双交联互穿超分子网络，可提供高拉伸/压缩强度 (~0.96/1.3 MPa) 和优异的杨氏模量 (~6.与报道的农业水凝胶的 0.01-1.0 MPa相比），以及在经历反复溶胀/干燥和长期压缩过程后的高强度保留。此外，即使在极端环境条件下，如高/低温和各种有机溶剂，水凝胶也显示出独特的非传统荧光和优异的稳定性。优异的荧光特性为实现“可视化”农业灌溉提供了潜力。该研究不仅提供了一种具有广泛应用的独特生物基水凝胶，而且为促进可持续农业的发展提供了新的见解。
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