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Morphological and Spectroscopic Studies of Chitin Nanowhiskers

Published online by Cambridge University Press:  14 April 2016

Violeta Campos-Cornelio ,
Nelly Flores-Ramírez ,
Salomón R. Vasquez-García ,
Lada Domratcheva-Lvova  and
Leandro García-González
Violeta Campos-Cornelio
Affiliation:
Institutional Master in Biological Sciences, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia 58030, México
Nelly Flores-Ramírez
Affiliation:
Department of Wood Engineering and Technology, UMSNH, Morelia 58030, México
Salomón R. Vasquez-García
Affiliation:
Department of Chemical Engineering, UMSNH, Morelia 58030, México
Lada Domratcheva-Lvova
Affiliation:
Department of Wood Engineering and Technology, UMSNH, Morelia 58030, México
Leandro García-González
Affiliation:
Research Center for Micro and Nanotechnology, Universidad Veracruzana, Boca del Rio, Veracruz, 94292, México
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Abstract

Chitin nanowhiskers were obtained with the purpose to be used as astaxanthin protectors against the photo and thermal degradation. These nanostructures were generated by a freezing/thawing procedure using two stirring methods: mechanical and sonication, which were named as FTM and FTS respectively. Morphological and spectroscopic studies were carried out on chitin nanowhiskers by scanning electronic microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Through a SEM analysis, chitin fibers were found uniformly spaced and oriented with the width ranged from of 20-40 nm. Furthermore, the nanowhiskers obtained by FTM showed long and flattened structures and bundles of homogeneous sizes, which have the capacity of being sites of stress concentration. In contrast, by FTS, the nanowhiskers showed coarse fibers exhibiting numerous peaks. By comparing the two methods is appreciated that FTS method provides more surface area, giving more sites for functionalization. Fourier transform infrared spectroscopy (FTIR) allowed the determination of free movement of functional groups on the surface of samples obtained by FTM and FTS methods. Significant differences of signals in the spectra indicate that there were more unassociated amides in the nanowhiskers obtained by FTS than by FTM.

Keywords

ChitosanFTIRSEM
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1817: Symposium 1D – Nanostructured Materials and Nanotechnology—2015 , 2016 , imrc2015abs129
Copyright
Copyright © Materials Research Society 2016 

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References

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