华南农业大学学报2025，Vol.46Issue(4)：509-519,11.DOI:10.7671/j.issn.1001-411X.202409020
岩藻多糖生物保水剂的合成及应用研究
Synthesis and application of fucoidan biological superabsorbent polymer
摘要
Abstract
[Objective]Using natural fucoidan rich in hydrophilic structures such as L-fucose and sulfated groups as raw material,a superabsorbent polymer(SAP)was synthesized to improve its degradability and renewable capacity.[Method]A fucoidan biological SAP was synthesized via aqueous solution polymerization by grafting natural fucoidan onto acrylic acid(AA)monomers using ammonium persulfate(APS)as the initiator and N,N'-methylenebis acrylamide(MBA)as the crosslinker.The preparation process was optimized through single-factor experiments.The product was characterized using Fourier-transform infrared spectroscopy(FT-IR)and scanning electron microscopy(SEM).A pot experiment was conducted to evaluate the effect of the SAP on cabbage growth.[Result]The optimal mass ratio of fucoidan to AA was 1.0∶7.5,with a neutralization degree of 70%,and the dosages of APS and MBA were 3.0%and 0.2%of the mass of AA,respectively.The SEM analysis revealed a porous and loose network structure,while FT-IR confirmed the formation of a graft copolymer of fucoidan and AA.The water absorption ratios of the SAP in deionized water and 9 g∙L-1 NaCl solution were 420.9 and 63.8 g∙g-1,respectively.After six cycles of absorption and drying,the water absorption ratio remained 70.8%of its initial value.Additionally,Chinese cabbage grew best when adding 6 g SAP per kilogram of soil,with the total plant biomass significantly increased by 105.5%and soil water content improved by 8.98%.[Conclusion]The fucoidan biological SAP exhibits excellent water absorption and reusability,significantly promoting plant growth when applied to soil.This study provides foundational data for the development and agricultural application of algal-derived SAP.关键词
岩藻多糖/保水剂/岩藻多糖生物保水剂/吸水性能/水溶液聚合技术Key words
Fucoidan/Superabsorbent polymer(SAP)/Fucoidan biological SAP/Water absorption capacity/Aqueous solution polymerization technology分类
农业科技引用本文复制引用
熊国美,林俊健,王思瑶,许志敏,顾红艳,常可鑫,彭红波..岩藻多糖生物保水剂的合成及应用研究[J].华南农业大学学报,2025,46(4):509-519,11.基金项目
云南省"兴滇英才支持计划"青年人才项目(KKXX202423042) （KKXX202423042）
云南省基础研究计划项目(202101BE070001-063) （202101BE070001-063）
昆明理工大学高层次人才引进项目(KKKP201823026) （KKKP201823026）
