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| Study on Preparation and Performances of Modified Wood Fiber Soil Water Retention Materials |
| Received:November 25, 2024 |
| DOI：10.11980/j.issn.0254-508X.2025.04.009 |
| Key Words:wood powder polyglutamic acid UV polymerization composite soil water retention material |
| Author Name | Affiliation | Postcode | | WANG Xiaoyong* | National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Key Lab of Papermaking and Biomass Refining for Light Industry, Key Lab of High-performance Fiber Wet-laid Nonwoven Materials for Textile Industry, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | NIU Junjie | National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Key Lab of Papermaking and Biomass Refining for Light Industry, Key Lab of High-performance Fiber Wet-laid Nonwoven Materials for Textile Industry, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | ZHANG Liying | National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Key Lab of Papermaking and Biomass Refining for Light Industry, Key Lab of High-performance Fiber Wet-laid Nonwoven Materials for Textile Industry, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | QIU Yetong | National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Key Lab of Papermaking and Biomass Refining for Light Industry, Key Lab of High-performance Fiber Wet-laid Nonwoven Materials for Textile Industry, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | WANG Huowang | National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Key Lab of Papermaking and Biomass Refining for Light Industry, Key Lab of High-performance Fiber Wet-laid Nonwoven Materials for Textile Industry, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | LIU Zehua* | National Key Lab of Bio-based Fiber Materials, Tianjin Key Lab of Pulp and Paper, China Key Lab of Papermaking and Biomass Refining for Light Industry, Key Lab of High-performance Fiber Wet-laid Nonwoven Materials for Textile Industry, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 |
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| Abstract:In this study， wood powder produced during wood processing was used as the fiber source. After pretreatment by chemical thermomechanical pulping and alkaline hydrogen peroxide bleaching， modified wood fiber （CRF） was obtained by TEMPO oxidation and colloid milling. Subsequently， the composite soil water retention material （PGA-CRF/SWR） was prepared by ultraviolet polymerization with polyglutamic acid （PGA）， acrylic acid （AA）， and acrylamide （AM）. The results showed that adding CRF with the dosage of 6% could significantly improve the mechanical properties of the soil water retention material， and the compressive strength increased from 0.010 8 MPa to 0.035 1 MPa. As the dosage of PGA increased from 3% to 12%， the compressive strength further increased to 0.046 7 MPa. When the pH value was 7 and the water temperature was 30 ℃， the water absorption rate and water retention rate of PGA-CRF/SWR reached the best， and when the dosages of CRF and 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 655.7 and 277.9 g/g. After 5 cycles of water absorption and swelling， the water absorption rate could still reach 62.2% of the initial value， the residual mass after soil burial for 60 days was 79.2%， which showed good thermal stability before 309.1 ℃. |
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