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| Preparation and Properties of Novel Cellulose Formate Threads |
| Received:April 23, 2025 Revised:April 30, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.10.004 |
| Key Words:cellulose formate threads tensile strength degree of substitution water resistance |
| Fund Project:国家自然科学基金项目（22208358）；中国科学院国际伙伴计划项目（323GJHZ2023019MI）；青岛市科技惠民示范专项（24-1-8-smjk-18-nsh， 24-1-8-cspz-6-nsh）。 |
| Author Name | Affiliation | Postcode | | CAO Yuxiang* | College of Light Industry Science and Engineering, Tianjin Key Lab of Pulp and Paper, State Key Lab of Bio-based Fiber Materials, Tianjin University of Science and Technology, Tianjin, 300457
State Key Lab of Photoelectric Conversion and Utilization of Solar Energy, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science, Qingdao,Shandong Prorince, 266101 | 266101 | | WU Meiyan | State Key Lab of Photoelectric Conversion and Utilization of Solar Energy, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science, Qingdao,Shandong Prorince, 266101 | 266101 | | LIU Yingying* | College of Light Industry Science and Engineering, Tianjin Key Lab of Pulp and Paper, State Key Lab of Bio-based Fiber Materials, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 | | LI Bin* | State Key Lab of Photoelectric Conversion and Utilization of Solar Energy, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science, Qingdao,Shandong Prorince, 266101 | 266101 |
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| Abstract:In this study， cellulose formate (CF) was prepared by the reaction of cellulose with formic acid， and a novel CF thread was produced by wet spinning using the formic acid solution of CF. When the reaction temperature was 50 ℃ and the reaction time was 5 h， the formic acid solution of CF was passed through two-stage coagulation baths of 1% NaOH mass ratio and of 5% ZnSO₄ mass ratio， respectively， followed by washing and drying， obtaining the CF threads with uniform morphology， high strength (tensile strength of 151 MPa)， excellent thermal stability (initial thermal decomposition temperature of 252 ℃) and water stability (showed no morphological change after being immersed in water for 3 months). CF threads had higher tensile strength than some reported nanocellulose， bacterial cellulose， and oxidized regenerated cellulose based threads. |
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