Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties 


Vol. 22,  No. 8, pp. 2177-2186, Aug.  2021
10.1007/s12221-021-0996-8


PDF
  Abstract

Successful conversion of cellulose hydroxyl (OH) to carboxyl (COOH) groups is the goal of many modification procedures since COOH groups enhance the polarity of the fibers surface and can be used for further fibers functionalization. In this work, in order to obtain 2,3-dicarboxycellulose, the regenerated cellulose fibers (viscose) in the form of fabric were functionalized through two-step oxidation: with NaIO4 to introduce CHO groups followed by NaClO2 for CHO conversion to COOH groups. After oxidations, the fibers morphology, surface chemistry, crystallinity, and surface charge were investigated using scanning electron microscopy (SEM), Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction analysis (XRD), and zeta potential measurements, respectively, as well as content of COOH groups determined by volumetric titrations. Sorption properties, i.e. moisture sorption, water retention power, and sorption of silver ions (Ag+) were evaluated and correlated with oxidation parameters. The interaction with model ion - Ag+ revealed that COOH groups, when maximum content obtained in oxidized fibers was 0.27 mmol쨌g-1, were available for binding Ag+ in nearly 1:1 ratio. The proposed oxidative protocol represents an effective method for COOH groups introduction into regenerated cellulose fibers, improvement of fibers sorption properties without deterioration of their crystallinity, and opens up a possibility for further functionalization of 2,3-dicarboxycellulose.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

R. C. F. F. b. T. O. U. S. P. a. S. C. -. I. o. t. S. a. S. Properties, "Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties," Fibers and Polymers, vol. 22, no. 8, pp. 2177-2186, 2021. DOI: 10.1007/s12221-021-0996-8.

[ACM Style]

Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties. 2021. Regenerated Cellulose Fiber Functionalization by Two-step Oxidation Using Sodium Periodate and Sodium Chlorite - Impact on the Structure and Sorption Properties. Fibers and Polymers, 22, 8, (2021), 2177-2186. DOI: 10.1007/s12221-021-0996-8.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

pISSN : 1229 - 9197
eISSN : 1875 - 0052

Impact Factor(2022): 2.5