Extraction of Cellulose Nanofibrils (CNFs) from Pomelo Peel via a Green and Simple Method

Wang, Xiaoyun; Peng, Ziwen; Liu, Minqi; Liu, Yang; He, Yujie; Liu, Yong; Li, Hao; Huang, Ju; Li, Maoxin; Wan, Junmin; Wang, Bing; Zhou, Yang; Yang, Hailiang; Zheng, Hailing

doi:10.1080/15440478.2021.1964132

Cited by 3 publications

(1 citation statement)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2) indicate that the crystal structure of CNFs in the treated samples is not change, but the crystallinity is improved. The peaks (at 2θ values of 15.8 • , 22.6 • , and 35 • ) are consistent with the characteristic diffraction peaks of cellulose I β [38]. It is further seen from the spectrum that the diffraction intensity of (110), (200), and (004) crystal face peaks all increase to varying degrees after treatments, which indicated that the crystallinity of cellulose materials increases after hydrothermal treatment and bleaching treatment, and lignin, hemicellulose and amorphous cellulose were effectively removed from fibers.…”

Section: Crystallinity Analysissupporting

confidence: 79%

Extraction of Cellulose Nanofibrils (CNFs) from Pomelo Peel via Hydrothermal Auxiliary Alkali Treatment Combined with Ball-Milling

Shao,

Wang,

Xia

et al. 2023

JFBI

View full text Add to dashboard Cite

The pomelo peel, a by-product of pomelo processing, is predominantly discarded. To fully exploit the pomelo peel resources and contribute to environmental improvement and resource recycling, this study reports a green method for extracting cellulose nanofibrils (CNFs) from pomelo peel through hydrothermal-assisted alkali treatment. Lemon juice is employed for further ball milling treatment to purify the CNFs. The chemical structure, crystallinity, thermal stability, and microstructure of pomelo peel powder and CNFs are analyzed. The study results demonstrate that the combination of alkali treatment, hydrothermal processing, bleaching, and ball milling progressively eliminates hemicellulose, lignin, and other impurities from the pomelo peel, yielding high-quality CNFs. The CNFs retain the natural cellulose structure, with enhanced thermal stability and crystallinity. The diameters of the CNFs range from 2-30 nm. This method employs lower NaOH concentrations than previous studies, resulting in CNFs with higher crystallinity and smaller diameters. This study provides a promising method for enhancing the value-added of pomelo peel and increasing the volume of CNF production.

show abstract

Section: Crystallinity Analysissupporting

confidence: 79%