Where you are: Home pageYear 2016Issue (118) → Article:
AAA     ENG | POL

Application of Raman Spectroscopy for Evaluation of Chemical Changes in Dibutyrylchitin Fibres

Research and development

Authors:

Nr DOI: 10.5604/12303666.1207842

Download... PDF
Full text
Download... PDF
references

Abstract:

Microporous dibutyrylchitin (DBC) fibres formed by means of a dry-wet method were treated with aqueous solutions of potassium hydroxide. By applying various parameters of the alkaline treatment, fibres can be transformed into fibres from regenerated chitin or even into chitosan fibres. In the first stage, with the application of 5% KOH solutions and temperatures ranging from 20 to 90 °C, fibres from regenerated chitin were obtained. The subsequent treatment stage with saturated KOH solutions and the temperature range 70 - 140 °C resulted in obtaining fibres from chitosan with different deacetylation degrees.Structural changes in the fibres occurring in the course of their chemical treatment were analysed using RAMAN spectroscopy. Raman spectra were next mathematically processed by means of GRAMS software within the range 1800 - 820 cm-1 in order to evaluate the changes quantitatively. A new method is described for the determination of butyrylation and deacetylation degrees of dibutyrylchitin, chitin and chitosan. Analysis of the fibres obtained carried out by means of RAMAN spectroscopy proves that in the process gradual degradation of the polymer chains takes place.

Tags:

Raman spectra, dibutyrylchitin fibres, deesterification degree, chitin fibres, deacetylation degree.

Citation:

Biniaś D, Biniaś W, Janicki J. Application of Raman Spectroscopy for Evaluation of Chemical Changes in Dibutyrylchitin Fibres. FIBRES & TEXTILES in Eastern Europe 2016; 24, 3(117): 27-38. DOI: 10.5604/12303666.1207842

Published in issue no 4 (118) / 2016, pages 27–38.

CONTACT:

FIBRES & TEXTILES
in Eastern Europe
ul. Skłodowskiej-Curie 19/27,
90-570 Łódź, Poland
tel. (48-42) 638-03-14
tel. (48-42) 638-03-63
e-mail: infor@ibwch.lodz.pl

EDITORIAL OFFICE
ul. Skłodowskiej-Curie 1927, 90-570 Łódź, Poland • tel.  (48-42) 638-03-14 • e-mail: infor@ibwch.lodz.plhttp://www.fibtex.lodz.pl

EDITORIAL DEPARTMENT
Editor-in-Chief Emilia Jaszczurska-Niedźwiedzka, V-ce Editor-in-Chief Marta Cyrczak, Text Editor Geoffrey Large, Assistant Editor Anna Wahl, Typesetting and Printed at Media-Press • Production IBWCh

facebook