中国造纸学报2024，Vol.39Issue(3)：78-86,9.DOI:10.11981/j.issn.1000-6842.2024.03.78
阔叶木浆高锰酸钾氧化制备纤维素纳米纤维
Preparation of Cellulose Nanofibrils by Oxidation of Potassium Permanganate from Hardwood Pulp
摘要
Abstract
In this study,carboxylated cellulose nanofibers were successfully prepared by KMnO4 oxidation pretreatment combined with low-energy and high-pressure homogenization using bleached hardwood pulp as raw material.The effects of oxidation time on the morphology,size,yield,chemical structure,Zeta potential,crystallinity,and other parameters of carboxylated cellulose nanofibers were explored.The results showed that the yield of carboxylated cellulose nanofibers with aspect ratio of 375 nm prepared by oxidation reaction for 1 h was as high as to 97.3%,and Zeta potential was-22.5 mV.The initial thermal decomposition temperature was higher than 293.2℃,and it had good dispersion stability and thermal stability.The thin film of carboxylated cellolose nanofibers prepared by vacuum filtration had excellent me-chanical properties(maximum tensile strength was 85.49 MPa)and high light transmittance(up to 88.1%).关键词
漂白硫酸盐阔叶木浆(BHKP)/高锰酸钾氧化/纤维素纳米纤维Key words
bleached hardwood kraft pulp(BHKP)/oxidation of potassium permanganate/cellulose nanofibers分类
轻工纺织引用本文复制引用
张素风,邓婷婷,李楠,李磊,丁豪,朱新月..阔叶木浆高锰酸钾氧化制备纤维素纳米纤维[J].中国造纸学报,2024,39(3):78-86,9.基金项目
国家自然科学基金(22378247) （22378247）
生物质化学与材料国际联合研究中心(2018GHJD-19) （2018GHJD-19）
陕西省重点产业创新链项目(2020ZDLGY 11-03) （2020ZDLGY 11-03）
中国-中东欧国家高校联合教育项目(2021099). （2021099）
