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Recent modifications of chitosan for adsorption applications: a critical and systematic review.

Kyzas GZ, Bikiaris DN - Mar Drugs (2015)

Bottom Line: These functional groups can help in establishing positions for modification.Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups.This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Polymer Chemistry and Technology, Division of Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece. drkyzas@chem.auth.gr.

ABSTRACT
Chitosan is considered to be one of the most promising and applicable materials in adsorption applications. The existence of amino and hydroxyl groups in its molecules contributes to many possible adsorption interactions between chitosan and pollutants (dyes, metals, ions, phenols, pharmaceuticals/drugs, pesticides, herbicides, etc.). These functional groups can help in establishing positions for modification. Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups. This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

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Chemical structure of chitosan grafted with poly(methyl methacrylate).
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marinedrugs-13-00312-f004: Chemical structure of chitosan grafted with poly(methyl methacrylate).

Mentions: Another anionic dye (RB19) was successfully removed using chitosan grafted with poly(methyl methacrylate) (Figure 4) [35]. The synthesis included two steps: (i) functionalization of chitosan (CTS) with glycidyl methacrylate (GMA) in aqueous solution with pH = 3.8; and (ii) synthesis of the copolymer-(CTS-GMA)-g-PMMA using the mixed solvent of acetic acid and tetrahydrofuran (v/v, 2/1). The molar ratio of CTS/GMA/MMA was 1/1/1. The maximum dye uptake was 1498 mg/g (Langmuir fitting) at 30 °C (pH = 3).


Recent modifications of chitosan for adsorption applications: a critical and systematic review.

Kyzas GZ, Bikiaris DN - Mar Drugs (2015)

Chemical structure of chitosan grafted with poly(methyl methacrylate).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4306939&req=5

marinedrugs-13-00312-f004: Chemical structure of chitosan grafted with poly(methyl methacrylate).
Mentions: Another anionic dye (RB19) was successfully removed using chitosan grafted with poly(methyl methacrylate) (Figure 4) [35]. The synthesis included two steps: (i) functionalization of chitosan (CTS) with glycidyl methacrylate (GMA) in aqueous solution with pH = 3.8; and (ii) synthesis of the copolymer-(CTS-GMA)-g-PMMA using the mixed solvent of acetic acid and tetrahydrofuran (v/v, 2/1). The molar ratio of CTS/GMA/MMA was 1/1/1. The maximum dye uptake was 1498 mg/g (Langmuir fitting) at 30 °C (pH = 3).

Bottom Line: These functional groups can help in establishing positions for modification.Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups.This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Polymer Chemistry and Technology, Division of Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece. drkyzas@chem.auth.gr.

ABSTRACT
Chitosan is considered to be one of the most promising and applicable materials in adsorption applications. The existence of amino and hydroxyl groups in its molecules contributes to many possible adsorption interactions between chitosan and pollutants (dyes, metals, ions, phenols, pharmaceuticals/drugs, pesticides, herbicides, etc.). These functional groups can help in establishing positions for modification. Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups. This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

Show MeSH