改性木质纤维土壤保水材料的制备及性能研究

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作者简介:,在读硕士研究生;研究方向:生物基高分子吸水聚合物。
关键词:木粉;聚谷氨酸;紫外光聚合;复合土壤保水材料中图分类号:TS79 文献标识码:A DOI: 10.11980/j.issn.0254-508X.2025.04.009
Study on Preparation and Performances of Modified Wood Fiber Soil Water Retention Materials
WANG XiaoyongNIU Junjie ZHANG Liying QIU YetongWANG Huowang LIU Zehua*
(NationalKeyLabofBbasedFiberMaterials,ianjinKeyLbofPulpandPape,hinaKeyabofPapermakingandBiomasefining
forLightIndustrKebgefoceFibet-doalsfextiledstrinUesity Technology,Tianjin,) (*E-mail: zehual@tust. edu. cn)
Abstract:Inthisstudy,woodpowderproducedduringoodprocesingasusedas thefersource.Afterpretreamentbyhemicalo chanicalpulpingandalkalinehydrogenperoxidebleaching,odifiedoodfber(CRF)wasbtainedbyEMPOoxidationandcoldmiling. Subsequently,tecompositesoilwaterrelentionmaterial(GA-CRFSWR)waspreparedbyulravioletpolymerizaionwithpolygutaicacid (PGA),acrylic acid (AA),and acrylamide(AM). The results showed that adding CRF with the dosage of 6 % could significantly improve the mechanicalprotiofolatereetateialdompesiergsdfroatoao age of PGA increased from 3 % to 12 % ,the compressive strength further increased to O. O46 7 MPa.When the pH value was 7 and the water temperature was ,thewater absorptionrate and waterretentionrateofPGA-CRF/SWRreached thebest,and whenthedosages of CRFand PGA were both 6 % ,the best water absorption rate of PGA-CRF/SWR in deionized water and tap water were 688.5 and 298.7 g / g ,respectively,and the water retention rate were 6 5 5 . 7 and 2 7 7 . 9 g / g ,After5 cycles of water absorption and swelling,the water absorption rate could still reach 6 2 . 2 % of the initial value,the residual mass after soil burial for 6O days was 7 9 . 2 % ,which showed good thermal stability before 309.1℃. Key words:wood powder;polyglutamic acid;UV polymerization;composite soil water retention material
农业生产是人类生存和发展的基础,水资源则是影响农业可持续发展的重要因素之一。(剩余20015字)