6533b828fe1ef96bd1288ee5
RESEARCH PRODUCT
Production and physicochemical characterization of a new amine derivative of gellan gum and rheological study of derived hydrogels
FioricaCalogeroPitarresiGiovannaPalumboFabio SalvatoreMauroNicoloFedericoSalvatoreGiammonaGaetanosubject
Polymers and PlasticsEthylenediamine02 engineering and technology010402 general chemistryPolysaccharide01 natural sciencesBiomedical deviceGellan gumPolyampholyte polymerschemistry.chemical_compoundBiomedical devicesMaterials ChemistryOrganic chemistryAmine derivatized gellan gumchemistry.chemical_classificationOrganic ChemistryHydrogels021001 nanoscience & nanotechnologyGellan gum0104 chemical sciencesHydrogelchemistrySelf-healing hydrogelsAmine gas treatingTitrationPOLYMERS0210 nano-technologyDerivative (chemistry)Macromoleculedescription
The production of an amine derivative of gellan gum, named GG-EDA, was here obtained by functionalizing the polysaccharide backbone with pendant ethylenediamine moieties. The obtained derivative was characterized by spectroscopic, colorimetric, chromatographic and rheological analyses to study the effect of the free amino groups on the physicochemical properties of the macromolecule. A titration experiment was conducted to study the acid-base dissociation constants in aqueous media for the carboxylic and amino groups in the GG-EDA and to shed light on the possibility that the derivative shows a polyampholyte structure under physiological conditions. The rheological analysis conducted on both physical and chemical hydrogels based on GG-EDA revealed that the presence of amino groups plays a fundamental role in influencing the viscoelastic properties and stability of the produced samples.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 | Carbohydrate Polymers |