中国造纸学报2025，Vol.40Issue(2)：26-33,8.DOI:10.11981/j.issn.1000-6842.2025.02.26
TEMPO氧化结合高压均质制备向日葵秸皮纤维素纳米纤维
Preparation of Sunflower Straw Rind Cellulose Nanofibers by TEMPO Oxidation Combined with High-pressure Homogenization
摘要
Abstract
Using sunflower stalk rind as raw material,TEMPO/NaBr/NaClO oxidation system was used to prepare TEMPO oxidized cellulose fibers(TOCF),and further combined with high-pressure homogenization method to obtain TEMPO oxidized cellulose nanofibrils(TOCNF),which featured with high carboxyl content,small particle size and good dispersion stability.The products was characterized using Transmis-sion Electron Microscopy(TEM),Fourier Transform Infrared Spectroscopy(FT-IR),X-ray Diffraction(XRD),and Thermogravimetric Analysis(TGA).The results showed that when the dosage of NaClO was 10 mmol/g,the carboxyl content of TOCF reached 1.42 mmol/g.Af-ter 8 times of high-pressure homogenization,the length and particle size of TOCNF significantly decreased,with distribution ranges of 100～250 nm and 3～7 nm,respectively.The FT-IR spectrum of TOCF showed a clear—COOH characteristic absorption peak,while TOCNF did not show any new characteristic peaks,indicating that high-pressure homogenization did not change its functional groups.Both TOCF and TOCNF retained the type I crystalline structure of cellulose,but compared with sunflower stalk rind holocellulose,the crystallinity and ther-mal stability of TOCF and TOCNF had decreased.关键词
向日葵秸皮/纤维素纳米纤维/TEMPO氧化/高压均质Key words
sunflower stalk rind/cellulose nanofibrils/TEMPO oxidation/high pressure homogenization分类
轻工业引用本文复制引用
王丽珍,李晓天,王俊跃..TEMPO氧化结合高压均质制备向日葵秸皮纤维素纳米纤维[J].中国造纸学报,2025,40(2):26-33,8.基金项目
自治区直属高校基本科研业务费(JY20250079) （JY20250079）
内蒙古工业大学科研启动金(BS2025024) （BS2025024）
自治区自然科学基金(2025MS05090). （2025MS05090）
