CAJ | 학술논문

设计合成、表征了5种磷酸酯基离子液体,并考察了油浴加热和微波加热下其对木质素的溶解性能。结果表明,微波加热下离子液体1,3-二甲基咪唑磷酸甲酯盐([Mmim]DMP)对木质素具有良好的溶解性能,在55℃下搅拌30 min,木质素在离子液体中溶解度可达60.0 g；采用FT-IR、SEM和XRD等表征技术对溶解后的再生木质素的化学结构、表观形貌及晶型变化进行了表征,结果表明再生木质素的化学结构并未发生变化,但颗粒更均匀、分散性更好且弥散衍射特征更强烈；此外,离子液体具有较好的回收和重复使用性能,100 g[Mmim]DMP重复使用5次后,其回收量达97.0 g,木质素溶解度达57.8 g。
설계합성、표정료5충린산지기리자액체,병고찰료유욕가열화미파가열하기대목질소적용해성능。결과표명,미파가열하리자액체1,3-이갑기미서린산갑지염([Mmim]DMP)대목질소구유량호적용해성능,재55℃하교반30 min,목질소재리자액체중용해도가체60.0 g；채용FT-IR、SEM화XRD등표정기술대용해후적재생목질소적화학결구、표관형모급정형변화진행료표정,결과표명재생목질소적화학결구병미발생변화,단과립경균균、분산성경호차미산연사특정경강렬；차외,리자액체구유교호적회수화중복사용성능,100 g[Mmim]DMP중복사용5차후,기회수량체97.0 g,목질소용해도체57.8 g。
Five phosphite-based ionic liquids were synthesized, characterized, and used to dissolve lignin under oil bath and microwave heating. It was found that ionic liquid 1, 3-dimethylimidazolium phosphate [ Mmim ] DMP had good solubility performance, and the solubility of lignin was 60. 0g at 55℃for 30 min. The chemical structure, morphology and crystalline of re-generated lignin from microwave treatment were characterized by FT-IR, SEM, and XRD. The results indicated that the structure of re-generated lignin was unchanged, and the particle had good dispersity and strong diffractive feature. On the other hand, ionic liquid[ Mmim] DMP had good reusability. When 100 g[ Mmim] DMP was reused for five times, its recovery capacity and lignin solubility were 97. 0 g and 57. 8g, respectively.