title: Controlling of silver nanoparticles structure by hydrogel networks.
abstract: Silver nanoparticles are the most widely used antibacterial agents with a number of advantages. The higher degree of biocompatibility and long-term antibacterial activity can be achieved with hydrogel-silver nanoparticles. In this work, a simple and facile synthetic strategy is developed to control the size and shape of the silver nanoparticles within the hydrogel networks. The variation in cross-link density of the polymer network has been found not only to control the size of the nanoparticles between 1 and 10nm, but it also regulates shape of the nanostructures such as nanorods, nanocubes, etc. This approach takes the advantage of the existing free-space between the networks of hydrogels that not only acts as a template for nucleation of particles but also provides long term stability. Further, nanoparticles can be recovered at any time from the hydrogel networks. These hybrid nanocomposites release nanoparticles with time which can eventually promote for antibacterial application. It can be inferred from the study that fine tuning of the hydrogel synthetic parameters will enhance the possibilities of desired nano-product tailor made for particular applications.
authors.affiliation: Synthetic Polymer Laboratory, Department of Polymer Science and Technology, Sri Krishnadevaraya University, Anantapur 515 003, AP, India.
authors.forename: Y
authors.initials: Y
authors.lastname: Murali Mohan
authors.forename: K
authors.initials: K
authors.lastname: Vimala
authors.forename: Varsha
authors.initials: V
authors.lastname: Thomas
authors.forename: K
authors.initials: K
authors.lastname: Varaprasad
authors.forename: B
authors.initials: B
authors.lastname: Sreedhar
authors.forename: S K
authors.initials: SK
authors.lastname: Bajpai
authors.forename: K
authors.initials: K
authors.lastname: Mohana Raju
mesh_terms: D000178:Acrylamides / Q000138:chemical synthesis; D000180:Acrylic Resins / Q000138:chemical synthesis* / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001407:Bacillus / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D020100:Hydrogels / Q000138:chemical synthesis* / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D008855:Microscopy, Electron, Scanning; D011092:Polyethylene Glycols / Q000138:chemical synthesis; D012834:Silver; D014961:X-Ray Diffraction; D000099166:Polyacrylamides
chemical_list: D000178:Acrylamides; D000180:Acrylic Resins; D000900:Anti-Bacterial Agents; D020100:Hydrogels; D011092:Polyethylene Glycols; D012834:Silver; D000099166:Polyacrylamides; C431184:poly(acrylamide-co-acrylic acid); C113798:polyethyleneglycol-polyacrylamide copolymer