Guar gum benzoate nanoparticle reinforced gelatin films for enhanced thermal insulation, mechanical and antimicrobial properties. (15th August 2017)

• Record Type: Journal Article
• Authors: Kundu, Sonia; Das, Aatrayee; Basu, Aalok; Abdullah, Md. Farooque; Mukherjee, Arup
• Is Part Of: Carbohydrate polymers. Volume 170(2017)
• Page Start: 89
• Page End: 98
• Publication Date: 2017-08-15
• Subjects: Guar gum (PubChem CID: 44134661) -- Citric acid monohydrate (PubChem CID: 22230) -- Dimethyl sulphoxide (PubChem CID: 679) -- Dimethyl amino pyridine (PubChem CID: 14284) -- Benzoyl chloride (PubChem CID: 7412) -- Lithium chloride (PubChem CID: 433294) -- Glutaraldehyde (PubChem CID: 3485) -- Glycerol (PubChem CID: 753) -- Sodium hydroxide (PubChem CID: 14798) -- Sodium chloride (PubChem CID: 5234); Guar gum benzoate gelatin nanocomposite films -- thermal insulation -- antimicrobial properties -- Hofmeister cation guided reaction; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2017.04.056
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: Guar gum benzoate with high DS was synthesized in homogeneous phase reactions. GGB self assembly nanoparticles were developed in solvent displacement technique. Nanocomposite films were developed due to protein-polysaccharide interactions. Films expressed thermal insulation, reinforcing and antimicrobial properties. Nanocomposite films were intended for edible packaging applications. Abstract: This work relates to guar gum benzoate self assembly nanoparticles synthesis and nano composite films development with gelatin. Guar gum benzoate was synthesized in a Hofmeister cation guided homogeneous phase reaction. Self assembly polysaccharide nanoparticles were prepared in solvent displacement technique. Electron microscopy and DLS study confirmed uniform quasi spherical nanoparticles with ζ-potential − 28.7 mV. Nanocomposite films were further developed in gelatin matrix. The film capacity augmenting due to nanoparticles incorporation was noteworthy. Superior barrier properties, reinforcing and thermal insulation effects were observed in films dispersed with 20% w/w nanoparticles. Detailed FTIR studies and thermal analysis confirmed nanoparticles interactions in the film matrix. The nanocomposite film water vapour permeability was at 0.75 g mm −1 kPa −1 h −1, thermal conductivity 0.39 W m −1 K −1 and the tensile strength were recorded at 3.87 MPa. The final film expressed excellent antimicrobial properties against water born gram negative and gram positive bacteria.