在非生物应激环境中,对温度敏感的聚酸基超吸收复合材料的应用潜力
Xiangbing Wang1, Wutang Sang1, Lingling Liu1
1Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
ACS omega
|September 29, 2025
概括
新的超吸收复合材料 (SAC) 使用低成本的二藻土和可生物降解的聚合物. 这些材料有效地吸收和保留水,为土壤干旱和盐化挑战提供了有希望的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 环境科学 环境科学
背景情况:
- 超吸收性复合材料 (SAC) 对于应对诸如土壤干旱和盐化等非生物压力至关重要.
- 高成本和环境问题阻碍了当前SAC的广泛采用.
研究的目的:
- 使用易于获得的材料开发低成本,环保的SAC.
- 为了优化这些新型SACs在农业应用中的水吸收和保留特性.
主要方法:
- 通过水性自由基聚合合成PASP-g-P- ((AA-co-NIPAM) /DT SACs的合成.
- 通过调整反应剂比率来优化SAC的吸水能力.
- 评估水的吸收,保留,反复胀,温度反应和盐分的抵抗.
主要成果:
- 优化的SAC显示出高吸水能力:672.7g/g (蒸水),147.9g/g (自来水) 和80.4g/g (0.9重量%NaCl).
- 优良的保留水分 (62.06%在40°C的12小时后) 和在五个膨胀周期 (65.32%的保留容量) 上的稳定性.
- 独特的温度反应性和在不同的盐度和pH值条件下证明的稳定性.
结论:
- 开发的SAC为减轻农业中的非生物压力提供了成本效益和环保的替代方案.
- 它们强大的水资源管理能力和环境稳定性突出显示了可持续农业的巨大潜力.
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