An inclusive physicochemical comparison of natural and synthetic chitin films

Kaya, Murat; Salaberria, Asier M.; Mujtaba, Muhammad; Labidi, Jalel; Baran, Talat; Mulerčikas, Povilas

doi:10.1016/j.ijbiomac.2017.08.108

Cited by 23 publications

(9 citation statements)

References 23 publications

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“…This drastic difference has been explained by preparation used in the synthetic chitin where it contains glycerol which was incorporated as a plasticizer. The glycerol has high water binding capacity which was observed in some other studies [31]. In contrast, chitosan having two hydroxyls and one amino functional group per repeating unit resulted in an amphiphilic nature.…”

Section: Hydrophilicitysupporting

confidence: 54%

Chitin and Chitosan Based Composites for Energy and Environmental Applications: A Review

Peter

Lyczko

Gopakumar

et al. 2020

Waste Biomass Valor

117

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Chitin and chitosan are the second most abundant natural biopolymers in the curst of the earth. These polysaccharide biopolymers have a long linear chain-like structure connected with β-d glucosidic linkage with the functionalizable surface groups. Because of the structural features, these biomaterials exhibit unique physical, chemical, mechanical and optical properties, which contributed to the tunable and outstanding properties such as low density, high porosity, renewability, natural biodegradability, and environmental friendliness, etc. Chitin was synthesized via mechanical, chemical, chemo-mechanical, and eco-friendly biological methods and the deacetylation of the synthesized chitin carried for the preparation of chitosan. With the chemical modification used for the preparation of chitosan, there occurs some minor change in characteristics; however, most of the properties were relatable due to major similarities in the microstructures. The inherent antibacterial, non-toxic, and biodegradable properties with the ease of processibility of both polymer has the potential to become a successful alternative to its synthetic counterparts for energy and environmental applications. However, the poor mechanical and thermal properties in comparison to the conventional alternatives have restricted its widespread applications. This review addresses various areas such as extraction techniques of chitin and synthesis of chitosan, discussion of the common characteristics of both polymers together such as crystallinity, thermal properties, mechanical properties, hydrophilicity, and surface charge. Moreover, this review paper also addresses the common functionalization techniques for both polymer and the use of both unmodified chitin and chitosan along with their derivatives in environmental and energy applications such as air pollution, heavy metal adsorption, dye adsorption, biosensors, EMI shielding, fuel cell, solar cell, lithium-ion batteries, and biofuels.

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Section: Hydrophilicitysupporting

confidence: 54%

Chitin and Chitosan Based Composites for Energy and Environmental Applications: A Review

Peter

Lyczko

Gopakumar

et al. 2020

Waste Biomass Valor

117

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“…In shellfish, chitin is normally associated with sclerotized proteins and minerals, while in fungi, depending on the species, chitin is combined with other polysaccharides such as glucan, mannan, or chitosan [18]. So far, most reports deal with the preparation of chitin derived from animal sources and (nano)papers or films prepared therefrom [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34], although, the potential of fungal chitin was recognized quite early on [35].…”

Section: Introductionmentioning

confidence: 99%

Surface properties of chitin-glucan nanopapers from Agaricus bisporus

Nawawi

Lee

Bismarck

et al. 2020

International Journal of Biological Macromolecules

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“…Commercially available chitosan samples, and samples used in previous studies, are in powder, granule, or flake form . In a limited number of recent studies, chitin isolation has been carried out by preserving the 3D structure of the organisms. , However, until now, chitosan has not been produced by preserving the 3D structure of an organism. For this reason, there seems to be no comparison available on the properties of chitosan films produced synthetically by dissolving chitosan in acetic acid, with natural chitosan film (NCF), which is produced by preserving its three-dimensional structure directly from the organism.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Loses Innate Beneficial Properties after Being Dissolved in Acetic Acid: Supported by Detailed Molecular Modeling

Bilican

Pekdemir

Önses

et al. 2020

ACS Sustainable Chem. Eng.

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Chitosan, which is obtained via deacetylation of chitin, has a variety of uses in agriculture, food, medicine, pharmaceuticals, and cosmetics. Industrial chitosan is in a gel form, which is produced by dissolving in acetic acids. These gels can be chitosan-only films or composite films that include other ingredients such as plant extracts or other polymers. Chitosanbased films, however, are not as natural as chitosan dissolved in weak acids, and they lack some of chitosan's innate properties. In this study, natural chitosan films (NCFs) were obtained from the pupa shells of black soldier flies through a process that maintains the original structure. The semisynthetic film (SCF) was then produced by dissolving the same NCF in acetic acid along with glycerol and glutaraldehyde. The semisynthetic film remarkably lost the beneficial properties of the natural film. The deteriorated characteristics include hydrophobicity, crystallinity, thermal properties, as well as a loss of fibril structure and a reduction in bacterial attachment. Moreover, the Ag-deposited NCFs manifested strikingly higher surface-enhanced Raman scattering activity as compared with the semisynthetic ones. These results, including the molecular modeling data, demonstrate that dissolving chitosan in acetic acid changes its polymeric structure.

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An inclusive physicochemical comparison of natural and synthetic chitin films

Cited by 23 publications

References 23 publications

Chitin and Chitosan Based Composites for Energy and Environmental Applications: A Review

Chitin and Chitosan Based Composites for Energy and Environmental Applications: A Review

Surface properties of chitin-glucan nanopapers from Agaricus bisporus

Chitosan Loses Innate Beneficial Properties after Being Dissolved in Acetic Acid: Supported by Detailed Molecular Modeling

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