1. Spectroscopic analysis of the powdery complex chitosan-iodine
Saratov Fall Meeting 2017
Spectroscopic analysis of the powdery complex chitosan-iodine
Belyakova О.А., Lugovitskaya T.N., Shipovskaya А.B.

2. Abstract
Chitosan-iodine complex was prepared by modification of the polymer powder in the iodine-containing sorbate vapor and its structure was studied by Electron and Infrared spectroscopy. The centers of iodine retention within the chitosan matrix were determined.

3. Chitosan Iodine medium (Sorbate) J2 (crystal) J2 + KJ + H2O
J2 + KJ + H20 +C2H5OH

4. original chitosan powder Chitosan-iodine complex
aqueous solution
of chitosan
Original
Chitosan
Modified
Chitosan
Chitosan-iodine complex

5. Chitosan-iodine complex
UF-spectra of aqueous solutions of chitosan-iodine complex and the evaporative medium
I3ˉ
IO3ˉ
Chitosan-iodine complex 4 3 5 2 1
λ, nm
1 – I2 + KI + H2O 2 – Chitosan + I2 + KI + H2O + C2H5OH 3 – Chitosan + I2 + H2O 4 – Chitosan H I2 + KI + H2O 5 – Chitosan H I2 + KI + H2O

6. Temperature resistance of the complex chitosan-iodine
The heat treatment time at 130oC:
1 – 0, 2 – 15, 3 – 30, 4 – 60, 5 – 120, 6 – 150 min
Inset - the dependence of the optical density of the same solutions at 290 (7), 350 (8) and 500 nm (9) of the heat treatment duration.

7. IR spectra 2 1 Transmission 1 – IR spectrum of the starting chitosan
2 – IR spectrum chitosan-iodine complex
cm-1

8. Estimated structure of the iodine-chitosan complex
Fragment of
chitosan
macromolecule