The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis

Juma Hanif; John Onyango Agumba; Katana Gona Gabriel

doi:doi:10.11648/j.ajmme.20180204.12

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The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis

Juma Hanif, John Onyango Agumba, Katana Gona Gabriel

Published in American Journal of Mechanical and Materials Engineering (Volume 2, Issue 4)

Received: 21 November 2018 Accepted: 13 December 2018 Published: 22 January 2019

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Abstract

Dynamic mechanical analysis, DMA, is a technique that can be used to study the mechanical properties of polymeric biomaterials so as to help unveil the physiological environments in which they can be applied. In this study, mechanical properties of chitosan (poly (β-(1→4)-N-acetyl-D-glucosamine)) thin films extracted from squid gladii found along the coastal areas of Kilifi and Mombasa in Kenya have been systematically investigated using DMA technique. From the study, chitosan thin film have shown a β- relaxation process occurring between 293K and 323K and the α- relaxation process hereby referred to as glass transition (T_g) occurring between 393K and 423K. Additionally, the chitosan films under the study are viscoelastic with very low mechanical damping suggesting that they have very high rigidity and resistance to deformation. The results from this study have thus given us an insight of the operating temperature range of the biomaterial.

Published in	American Journal of Mechanical and Materials Engineering (Volume 2, Issue 4)
DOI	10.11648/j.ajmme.20180204.12
Page(s)	40-45
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

α- Relaxation, β-Relaxation, Squid Gladii, Chitin, Chitosan, Acetylation, Deacetylation

References

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APA Style

Juma Hanif, John Onyango Agumba, Katana Gona Gabriel. (2019). The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis. American Journal of Mechanical and Materials Engineering, 2(4), 40-45. https://doi.org/10.11648/j.ajmme.20180204.12

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ACS Style

Juma Hanif; John Onyango Agumba; Katana Gona Gabriel. The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis. Am. J. Mech. Mater. Eng. 2019, 2(4), 40-45. doi: 10.11648/j.ajmme.20180204.12

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AMA Style

Juma Hanif, John Onyango Agumba, Katana Gona Gabriel. The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis. Am J Mech Mater Eng. 2019;2(4):40-45. doi: 10.11648/j.ajmme.20180204.12

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@article{10.11648/j.ajmme.20180204.12,
  author = {Juma Hanif and John Onyango Agumba and Katana Gona Gabriel},
  title = {The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis},
  journal = {American Journal of Mechanical and Materials Engineering},
  volume = {2},
  number = {4},
  pages = {40-45},
  doi = {10.11648/j.ajmme.20180204.12},
  url = {https://doi.org/10.11648/j.ajmme.20180204.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmme.20180204.12},
  abstract = {Dynamic mechanical analysis, DMA, is a technique that can be used to study the mechanical properties of polymeric biomaterials so as to help unveil the physiological environments in which they can be applied. In this study, mechanical properties of chitosan (poly (β-(1→4)-N-acetyl-D-glucosamine)) thin films extracted from squid gladii found along the coastal areas of Kilifi and Mombasa in Kenya have been systematically investigated using DMA technique. From the study, chitosan thin film have shown a β- relaxation process occurring between 293K and 323K and the α- relaxation process hereby referred to as glass transition (Tg) occurring between 393K and 423K. Additionally, the chitosan films under the study are viscoelastic with very low mechanical damping suggesting that they have very high rigidity and resistance to deformation. The results from this study have thus given us an insight of the operating temperature range of the biomaterial.},
 year = {2019}
}

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TY  - JOUR
T1  - The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis
AU  - Juma Hanif
AU  - John Onyango Agumba
AU  - Katana Gona Gabriel
Y1  - 2019/01/22
PY  - 2019
N1  - https://doi.org/10.11648/j.ajmme.20180204.12
DO  - 10.11648/j.ajmme.20180204.12
T2  - American Journal of Mechanical and Materials Engineering
JF  - American Journal of Mechanical and Materials Engineering
JO  - American Journal of Mechanical and Materials Engineering
SP  - 40
EP  - 45
PB  - Science Publishing Group
SN  - 2639-9652
UR  - https://doi.org/10.11648/j.ajmme.20180204.12
AB  - Dynamic mechanical analysis, DMA, is a technique that can be used to study the mechanical properties of polymeric biomaterials so as to help unveil the physiological environments in which they can be applied. In this study, mechanical properties of chitosan (poly (β-(1→4)-N-acetyl-D-glucosamine)) thin films extracted from squid gladii found along the coastal areas of Kilifi and Mombasa in Kenya have been systematically investigated using DMA technique. From the study, chitosan thin film have shown a β- relaxation process occurring between 293K and 323K and the α- relaxation process hereby referred to as glass transition (Tg) occurring between 393K and 423K. Additionally, the chitosan films under the study are viscoelastic with very low mechanical damping suggesting that they have very high rigidity and resistance to deformation. The results from this study have thus given us an insight of the operating temperature range of the biomaterial.
VL  - 2
IS  - 4
ER  -

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Author Information

Juma Hanif

Physics Department, Pwani University, Kilifi, Kenya
John Onyango Agumba

Physics Department, Pwani University, Kilifi, Kenya
Katana Gona Gabriel

Physics Department, Pwani University, Kilifi, Kenya

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Plain Text BibTeX RIS

APA Style

Juma Hanif, John Onyango Agumba, Katana Gona Gabriel. (2019). The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis. American Journal of Mechanical and Materials Engineering, 2(4), 40-45. https://doi.org/10.11648/j.ajmme.20180204.12

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ACS Style

Juma Hanif; John Onyango Agumba; Katana Gona Gabriel. The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis. Am. J. Mech. Mater. Eng. 2019, 2(4), 40-45. doi: 10.11648/j.ajmme.20180204.12

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AMA Style

Juma Hanif, John Onyango Agumba, Katana Gona Gabriel. The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis. Am J Mech Mater Eng. 2019;2(4):40-45. doi: 10.11648/j.ajmme.20180204.12

Copy | Download

@article{10.11648/j.ajmme.20180204.12,
  author = {Juma Hanif and John Onyango Agumba and Katana Gona Gabriel},
  title = {The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis},
  journal = {American Journal of Mechanical and Materials Engineering},
  volume = {2},
  number = {4},
  pages = {40-45},
  doi = {10.11648/j.ajmme.20180204.12},
  url = {https://doi.org/10.11648/j.ajmme.20180204.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmme.20180204.12},
  abstract = {Dynamic mechanical analysis, DMA, is a technique that can be used to study the mechanical properties of polymeric biomaterials so as to help unveil the physiological environments in which they can be applied. In this study, mechanical properties of chitosan (poly (β-(1→4)-N-acetyl-D-glucosamine)) thin films extracted from squid gladii found along the coastal areas of Kilifi and Mombasa in Kenya have been systematically investigated using DMA technique. From the study, chitosan thin film have shown a β- relaxation process occurring between 293K and 323K and the α- relaxation process hereby referred to as glass transition (Tg) occurring between 393K and 423K. Additionally, the chitosan films under the study are viscoelastic with very low mechanical damping suggesting that they have very high rigidity and resistance to deformation. The results from this study have thus given us an insight of the operating temperature range of the biomaterial.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - The α- and β-Relaxation Processes of Polymeric Chitosan from Squid Gladii as Revealed by Dynamic Mechanical Analysis
AU  - Juma Hanif
AU  - John Onyango Agumba
AU  - Katana Gona Gabriel
Y1  - 2019/01/22
PY  - 2019
N1  - https://doi.org/10.11648/j.ajmme.20180204.12
DO  - 10.11648/j.ajmme.20180204.12
T2  - American Journal of Mechanical and Materials Engineering
JF  - American Journal of Mechanical and Materials Engineering
JO  - American Journal of Mechanical and Materials Engineering
SP  - 40
EP  - 45
PB  - Science Publishing Group
SN  - 2639-9652
UR  - https://doi.org/10.11648/j.ajmme.20180204.12
AB  - Dynamic mechanical analysis, DMA, is a technique that can be used to study the mechanical properties of polymeric biomaterials so as to help unveil the physiological environments in which they can be applied. In this study, mechanical properties of chitosan (poly (β-(1→4)-N-acetyl-D-glucosamine)) thin films extracted from squid gladii found along the coastal areas of Kilifi and Mombasa in Kenya have been systematically investigated using DMA technique. From the study, chitosan thin film have shown a β- relaxation process occurring between 293K and 323K and the α- relaxation process hereby referred to as glass transition (Tg) occurring between 393K and 423K. Additionally, the chitosan films under the study are viscoelastic with very low mechanical damping suggesting that they have very high rigidity and resistance to deformation. The results from this study have thus given us an insight of the operating temperature range of the biomaterial.
VL  - 2
IS  - 4
ER  -

Copy | Download