title: Cellulose nanofibrils extracted from the byproduct of cotton plant.
abstract: Cotton stalk bark, as the byproduct of cotton plant, was usually discarded and/or combusted, leading to waste of resources and environment pollution. How to efficiently utilize this kind of cellulosic materials is of significative to energy saving and environment protection. Herein, we report on the extraction of cellulose nanofibrils (CNF) from the cotton stalk bark for the first time by a combination of TEMPO-oxidation and mechanical disintegration method. The obtained CNF showed a yield more than 20 wt%. The morphologies, crystalline structures and thermal properties of CNF were extensively investigated by the transmission electron microscopy, scanning electron microscopy, synchrotron radiation wide-angle X-ray scattering, Fourier transform infrared spectra and differential scanning calorimetry, respectively. The results showed that the final extracted CNF have similar polymorphs with their starting materials and a significantly increased crystallinity. This work will provide a new way to utilize the cotton stalk barks.
authors.affiliation: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
authors.forename: Xiaran
authors.initials: X
authors.lastname: Miao
authors.affiliation: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China. Electronic address: jinyoulin82@gmail.com.
authors.forename: Jinyou
authors.initials: J
authors.lastname: Lin
authors.affiliation: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Tian
authors.affiliation: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China. Electronic address: Lixiuhong@sinap.ac.cn.
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Li
authors.affiliation: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
authors.forename: Fenggang
authors.initials: F
authors.lastname: Bian
authors.affiliation: Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
mesh_terms: D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D003497:Cyclic N-Oxides / Q000737:chemistry; D003368:Gossypium / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*
chemical_list: D003497:Cyclic N-Oxides; D002482:Cellulose; C003959:TEMPO
keywords: Cellulose; Cellulose nanofibrils; Cotton stalk bark; Synchrotron radiation