Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada.
Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada.
Bioresour Technol. 2024 Sep;408:131204. doi: 10.1016/j.biortech.2024.131204. Epub 2024 Aug 3.
The synthetic superabsorbent polymers (SAPs) market is experiencing significant growth, with applications spanning agriculture, healthcare, and civil engineering, projected to increase from $9.0 billion USD in 2019 to $12.9 billion USD by 2024. Despite this positive trend, challenges such as fluctuating raw material costs and lower biodegradability of fossil fuel-based SAPs could impede further expansion. In contrast, cellulose and its derivatives present a sustainable alternative due to their renewable, biodegradable, and abundant characteristics. Lignocellulosic biomass (LCB), rich in cellulose and lignin, shows promise as a source for eco-friendly superabsorbent polymer (SAP) production. This review discusses the applications, challenges, and future prospects of SAPs derived from lignocellulosic resources, focusing on the cellulose extraction process through fractionation and various modification and crosslinking techniques. The review underscores the potential of cellulose-based SAPs to meet environmental and market needs, offering a viable path forward in the quest for more sustainable materials.
合成高吸水性聚合物（SAP）市场正在经历显著增长，其应用涵盖农业、医疗保健和土木工程，预计从 2019 年的 90 亿美元增长到 2024 年的 129 亿美元。尽管呈现这一积极趋势，但原材料成本波动和基于化石燃料的 SAP 生物降解性较低等挑战可能会阻碍进一步扩张。相比之下，纤维素及其衍生物由于可再生、可生物降解和丰富的特点，提供了一种可持续的替代方案。富含纤维素和木质素的木质纤维素生物质（LCB）有望成为生产环保型高吸水性聚合物（SAP）的原料。本文综述了源自木质纤维素资源的 SAP 的应用、挑战和未来前景，重点讨论了通过分级和各种改性及交联技术提取纤维素的过程。综述强调了纤维素基 SAP 满足环境和市场需求的潜力，为寻求更可持续的材料提供了一条可行的前进道路。
