title: Preparation and characterization of cellulose nanofibers from de-pectinated sugar beet pulp.
abstract: Cellulose nanofibers (diameter=10-70 nm) were produced using chemical treatments (alkali treatment and bleaching) and high pressure homogenization from de-pectinated sugar beet pulp (DSBP). Chemical analysis and Fourier transform infrared spectroscopy (FTIR) indicated that the chemical treatments greatly removed the hemicellulose and lignin from the DSBP and significantly increased the cellulose content. The crystallinity of the cellulose nanofibers increased from 35.67% to 69.62% after alkali treatment and bleaching. The thermal degradation temperature of DSBP cellulose nanofibers was 271.7 °C which was found to be 47.3 °C higher than that of the untreated DSBP. The DSBP cellulose nanofibers can be preferably used as reinforcement in the biocomposite material at high temperature.
authors: College of Engineering, National Energy R&D Center for Non-food Biomass, China Agricultural University, P.O. Box 50, 17 Qinghua Donglu, Beijing 100083, China.
authors: Meng
authors: M
authors: Li
authors: College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Functional Food from Plant Resources, China Agricultural University, Beijing, China.
authors: Li-jun
authors: LJ
authors: Wang
authors: College of Engineering, National Energy R&D Center for Non-food Biomass, China Agricultural University, P.O. Box 50, 17 Qinghua Donglu, Beijing 100083, China. Electronic address: dongli@cau.edu.cn.
authors: Dong
authors: D
authors: Li
authors: College of Biochemical Engineering, Beijing Union University, Beijing 100023, China. Electronic address: cheng1012cn@yahoo.com.cn.
authors: Yan-ling
authors: YL
authors: Cheng
authors: School of Applied Sciences, RMIT University, City Campus, Melbourne, VIC 3001, Australia.
authors: Benu
authors: B
authors: Adhikari
mesh_terms: D027461:Beta vulgaris / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers / Q000737:chemistry*; D010368:Pectins / Q000302:isolation & purification*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D010368:Pectins; D002482:Cellulose
keywords: Cellulose nanofibers; High pressure homogenization; Morphology; Sugar beet; Thermal degradation