Layer-by-layer assembly of nanocomposite films with thickness up to hundreds of nanometers

Zhou, Lingde; Yan, Yunfei; Yu, Hongquan; Gu, Erdan; Jiang, Desheng

doi:10.1016/s1003-6326(06)60102-7

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…This technique is based on electrostatic interaction as the driving force and has attracted considerable attention in past decade studies [20]. In addition, it possesses advantages in cost-effective, rapid, experimentally simple, environmentally-friendly, room temperature processing and high throughput of production in comparison with previous techniques used to prepare nanocomposite materials [21,22]. Layer by layer technique is carried out by taking a functionalized substrate and exposing it to an oppositely charged either cationic or anionic material so that the material is electrostatically adsorbed onto the substrate.…”

Section: Introductionmentioning

confidence: 99%

Physical and Antimicrobial Characterization of Self Assembled Silver Nanoparticle/Chitosan onto Low Density Polyethylene Film as Active Packaging Polymer

Jokar

Rahman

Abdullah

2014

JNanoR

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Colloidal Silver nanoparticles with a size of 5 nm produced by chemical reduction using poly ethylene glycol (PEG 200). Layers of silver nanoparticles and chitosan were deposited onto low density polyethylene (LDPE) substrate by layer by layer (LBL) self-assembly technique. Silver nanocomposite films were built by sequential dipping of LDPE film in either anionic silver nanoparticles or cationic chitosan. Silver nanoparticles and chitosan led to the formation of nanocomposite films possessing antimicrobial properties with the thickness of 2, 4, 8, 12 and 20 layers. Silver nanocomposite films were characterized by atomic force microscopy (AFM). Thermal, mechanical and barrier properties of LBL deposited nanocomposite films were investigated. Results showed that the LBL deposition of silver nanoparticles and chitosan increased the crystallinity of the composites and also improved mechanical and barrier properties of LDPE film significantly (p<0.05). Antimicrobial activity of silver nanocomposites againstEscherichia coliandStaphylococcus aureuswas evaluated. Growth kinetic parameters ofE.coliandS.aureusaffected by silver nanocomposites were calculated by modeling of absorbance data according to Gomperz equation. LDPE-silver nanocomposite affected bacterial growth parameters significantly (p<0.05). The specific growth rate reduced from 0.30 to 0.11 h-1forE. coliand decreased 0.27 to 0.06 h-1forS. aureus.

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Section: Introductionmentioning

confidence: 99%