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Facile Preparation of Nanofibrillar Networks of “Ureido-Chitin” Containing Ureido and Amine as Chelating Functional Groups

Ganesan, Kathirvel and Heyer, Markus and Ratke, Lorenz and Milow, Barbara (2018) Facile Preparation of Nanofibrillar Networks of “Ureido-Chitin” Containing Ureido and Amine as Chelating Functional Groups. Chemistry - A European Journal, 24, pp. 19332-19340. Wiley. doi: 10.1002/chem.201804405. ISSN 0947-6539.

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Official URL: https://onlinelibrary.wiley.com/doi/pdf/10.1002/chem.201804405


Aerogels of polysaccharide with chelating functions can be useful as supports in many applications because of their hosting property. We demonstrate a facile method for the preparation of aerogels of chitosan derivative, “ureido‐chitin” containing ureido functional group. The nanofibrillar networks of “ureido‐chitin” were produced by the nucleophilic addition of amine groups of chitosan with in situ prepared isocyanic acid. The presence of ureido functional groups was confirmed by FT‐IR, solid state CP‐MAS 13C and 15N NMR. No crosslinking of molecular chains was observed. The maximum degree of ureido functional groups was estimated to be about 66%. Characterization by powder XRD confirmed that the polymer chains self‐assembled in a way how the chitin polymers orient themselves in a highly ordered crystalline structure. The nanofibrillar networks showed no solubility under aqueous acidic and alkaline conditions. Bio‐based hosting materials of this kind with two different hosting functional groups: ureido and amine can be potentially utilized for wide applications in aqueous medium including filters, catalysis and biomedicine.

Item URL in elib:https://elib.dlr.de/125589/
Document Type:Article
Title:Facile Preparation of Nanofibrillar Networks of “Ureido-Chitin” Containing Ureido and Amine as Chelating Functional Groups
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Ganesan, KathirvelUNSPECIFIEDhttps://orcid.org/0000-0002-4876-5366UNSPECIFIED
Heyer, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-5180-0695UNSPECIFIED
Ratke, LorenzUNSPECIFIEDhttps://orcid.org/0000-0003-2487-4717UNSPECIFIED
Milow, BarbaraUNSPECIFIEDhttps://orcid.org/0000-0002-6350-7728UNSPECIFIED
Date:16 October 2018
Journal or Publication Title:Chemistry - A European Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 19332-19340
Series Name:Wiley-VCH Publications
Keywords:Aerogel; Chitin; Chitosan; Ureido; Gels
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Verkehrsentwicklung und Umwelt II (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogele
Deposited By: Ganesan, Dr. Kathirvel
Deposited On:15 Mar 2019 09:38
Last Modified:08 Nov 2023 14:12

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