title: Cationic guar gum orchestrated environmental synthesis for silver nano-bio-composite films.
abstract: This work is meant for environmentally friendly synthesis and functional evaluation of silver nanoparticles in a newer cationic guar biopolymer (GGAA). Assembly of molecules in lower size range (∼ 10 nm) was attained in a biopolymer entrapped bottom-up synthesis. Guar gum is a filming biopolymer. Nanoparticles encaged in cationic guar (GGAgnC) were preserved as films for months without any significant effect on particle size, distribution or plasmonic intensity. The new nano-bio-composite and films were characterized fully in FTIR, XRD, SEM and TEM studies. Silver nanoparticles induced surface water repellency remarkably and lowered moisture permeability. GGAgnC film water contact angle was recorded as 115° while, that in case of GGAA was 59°. GGAgnC expressed intense antimicrobial activity when tested against a range of microorganisms. Immobilized silver nanoparticles in GGAA can feasibly be used as filming microbicidals suitable for textiles, packaging and biomedical device applications.
authors.affiliation: Department of Chemical Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
authors.forename: Md Farooque
authors.initials: MF
authors.lastname: Abdullah
authors.affiliation: Center for Research in Nanoscience and Nanotechnology, University of Calcutta, JD-2, Salt Lake, Kolkata 700 098, India.
authors.forename: Sumanta Kumar
authors.initials: SK
authors.lastname: Ghosh
authors.affiliation: Department of Chemical Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
authors.forename: Sreyasree
authors.initials: S
authors.lastname: Basu
authors.affiliation: Department of Chemical Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India; Center for Research in Nanoscience and Nanotechnology, University of Calcutta, JD-2, Salt Lake, Kolkata 700 098, India. Electronic address: arupm1234@gmail.com.
authors.forename: Arup
authors.initials: A
authors.lastname: Mukherjee
mesh_terms: D000586:Amination; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D002412:Cations / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D005685:Galactans / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D055772:Green Chemistry Technology / Q000379:methods; D008351:Mannans / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods; D053149:Plant Gums / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology; D013227:Steam; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents; D002412:Cations; D005685:Galactans; D008351:Mannans; D053149:Plant Gums; D013227:Steam; D012834:Silver; C007894:guar gum
keywords: Environmental synthesis; Guar gum alkyl amine; Nano-bio-composite film; Silver nanoparticles