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| Preparation and Application of Phosphate Esterification Cross-linked Bifunctional Cellulose-based Ion Exchange Fibers |
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| DOI：10.11980/j.issn.0254-508X.2026.05.001 |
| Key Words:cellulose fiber phosphoesterified cellulose crosslinking ion exchange heavy metal wastewater purification |
| Author Name | Affiliation | Postcode | | SHAO Xinyi* | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042
3International Innovation Center for Forest Chemicals and Materials, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu Province, 210042 | 210042 | | FANG Guigan | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042
3International Innovation Center for Forest Chemicals and Materials, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu Province, 210042 | 210042 | | DENG Yongjun* | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042
3International Innovation Center for Forest Chemicals and Materials, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu Province, 210042 | 210042 | | LI Hongbin | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042
3International Innovation Center for Forest Chemicals and Materials, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu Province, 210042 | 210042 | | GENG Bo | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042 | 210042 | | JIAO Ting | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042 | 210042 | | ZHAO Mengke | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042 | 210042 | | WU Ting* | 1National Key Lab for Development and Utilization of Forest Food Resources, Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, Jiangsu Province, 210042
2Jiangsu Province Key Lab of Biomass Energy and Material, National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products, Nanjing, Jiangsu Province, 210042
3International Innovation Center for Forest Chemicals and Materials, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing, Jiangsu Province, 210042 | 210042 |
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| Abstract:In this study， using bleached softwood pulp as the raw material， a synergistic modification strategy combining phosphorylation cross-linking and carboxymethylation was proposed. Through a site-complementary design， the phosphorylation of the C6 hydroxyl group and the carboxymethylation of the C2 hydroxyl group of glucose units in cellulose were utilized to achieve efficient utilization of the active hydroxyl groups on the cellulose chains， successfully constructing bifunctional cationic exchange cellulose fibers (PC-CEF). The results indicated that PC-CEF possessed both high ion exchange capacity and excellent structural stability， with a cation exchange capacity of 304.5 mmol/100 g and a fiber yield of 111.6%， significantly outperforming traditional monofunctional or petroleum-based ion exchange fibers. The maximum adsorption capacity for Cu2+ was 82.56 mg/g， with the adsorption process following quasi-second-order kinetics and the Sips model， and the material demonstrated good recyclability and ion selectivity. |
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