168 0

Ultrasonic-assisted deacetylation of cellulose acetate nanofibers: A rapid method to produce cellulose nanofibers

Title
Ultrasonic-assisted deacetylation of cellulose acetate nanofibers: A rapid method to produce cellulose nanofibers
Author
Alvira Ayoub
Keywords
Ultrasonic energy; Cellulose acetate; Cellulose nanofibers; Electrospinning; Deacetylation
Issue Date
2017-05
Publisher
ELSEVIER SCIENCE BV
Citation
ULTRASONICS SONOCHEMISTRY, v. 36, page. 319-325
Abstract
Herein we report a rapid method for deacetylation of cellulose acetate (CA) nanofibers in order to produce cellulose nanofibers using ultrasonic energy. The CA nanofibers were fabricated via electrospinning thereby treated with NaOH and NaOH/EtOH solutions at various pH levels for 30, 60 and 90 min assisted by ultrasonic energy. The nanofiber webs were optimized by degree of deacetylation (DD%) and wicking behavior. The resultant nanofibers were further characterized by FTIR, SEM, WARD, DSC analysis. The DD % and FTIR results confirmed a complete conversion of CA nanofibers to cellulose nanofibers within 1 h with substantial increase of wicking height. Nanofibers morphology under SEM showed slightly swelling and no damage of nanofibers observed by use of ultrasonic energy. The results of ultrasonic-assisted deacetylation are comparable with the conventional deacetylation. Our rapid method offers substantially reduced deacetylation time from 30 h to just 1 h, thanks to the ultrasonic energy. (C) 2016 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/abs/pii/S1350417716304527?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/114203
ISSN
1350-4177; 1873-2828
DOI
10.1016/j.ultsonch.2016.12.013
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE