期刊
CARBOHYDRATE POLYMERS
卷 170, 期 -, 页码 89-98出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.04.056
关键词
Guar gum benzoate gelatin nanocomposite films; thermal insulation; antimicrobial properties; Hofmeister cation guided reaction
资金
- University Grants Commission (UGC, India)
- World Bank TEQIP projects in the University of Calcutta
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 zeta-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 nanopartides. 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. (C) 2017 Elsevier Ltd. All rights reserved.
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