中国造纸学报2025，Vol.40Issue(4)：101-111,11.DOI:10.11981/j.issn.1000-6842.2025.04.101
高密度阳离子聚离子液体接枝纤维素海绵的制备及其吸附性能研究
Cellulose Sponges Grafted with High-density Cationic Polymeric Ionic Liquids:Synthesis and Adsorption Performance
摘要
Abstract
In this study,a high-density cationic poly(ionic liquid)-grafted cellulose sponge(CS-PAPIM-co-PBBIM)was fabricated and em-ployed as a novel cellulose-based adsorbent.Two functional ionic liquid monomers,1-vinyl-3-(3-ammoniumpropyl)imidazolium dibromide and bis-1-vinyl-3,3'-(1,4-phenylmethylene)imidazolium dichloride,were rationally designed and synthesized,and subsequently grafted on-to the cellulose sponge surface through reversible addition-fragmentation chain-transfer(RAFT)polymerization.This surface modification markedly enhanced the adsorption performance of the material toward methyl orange(MO).The optimized CS-PAPIM-co-PBBIM exhibited a high adsorption capacity of 312 mg/g for MO.Mechanistic analysis revealed the presence of multiple types of adsorption sites on the adsorption material surface,where electrostatic attraction between the poly(ionic liquid)layer and MO served as the dominant driving force,and π-π stacking interactions together with hydrophobic interactions synergistically facilitated chemisorption.Moreover,after five adsorption-desorption cycles,the adsorbent maintained over 85%of its initial adsorption capacity,demonstrating excellent regeneration ability and cycling stability.关键词
纤维素/聚离子液体/吸附/甲基橙/接枝改性Key words
cellulose/polymeric ionic liquid/adsorption/methyl orange/grafting modification分类
轻工纺织引用本文复制引用
宋文琦,符泽鹏,任芷桦,彭亲,朱雪瑶,王思雨,杨成林,李沛睿,杨苗秀..高密度阳离子聚离子液体接枝纤维素海绵的制备及其吸附性能研究[J].中国造纸学报,2025,40(4):101-111,11.基金项目
国家自然科学基金项目(22308283) （22308283）
陕西省教育厅青年创新团队基金项目(24JP198) （24JP198）
西京学院"大学生创新创业训练计划"项目(X202312715091). （X202312715091）
