Nanocomposites Based on Acrylic Copolymer, Iron Lignosulfonate and ZnO Nanoparticles Used as Wood Preservatives

2009 ◽  
Vol 151 ◽  
pp. 139-144 ◽  
Author(s):  
Lucia Dumitrescu ◽  
Dana Perniu ◽  
Ileana Manciulea
Keyword(s):  
Zno Nanoparticles ◽  
Sol Gel ◽  
Ethyl Acrylate ◽  
Wood Preservation ◽  
Acrylic Copolymer ◽  
Water Emulsion ◽  
Afm Analysis ◽  
Acrylic Copolymers ◽  
Inorganic Nanomaterials

The paper presents research concerning the synthesis and characterization of some new nanocomposite used as wood coating nanomaterials, consisting of a hybrid of organic (functionalized acrylic copolymers with iron lignosulfonate) and inorganic nanomaterials (ZnO nanoparticles obtained by sol-gel process). The presence of acrylic copolymers in water emulsion (based on monomers ethyl acrylate, butyl acrylate, acrylonitrile and the lignin derivative iron lignosulfonate) and ZnO nanoparticles enables the formation of a crosslinked nanometric network of inorganic and organic domains, emphasized by AFM analysis. The interphase characterization of the nanostructured materials synthesized was performed using FT-IR analysis. Considering the biocide activity for the acrylic copolymers, the lignin derivative iron lignosulfonate and ZnO nanoparticles, the obtained nanocomposites were biologically investigated and proposed as wood preservation agents.

Preparation and characterization of ZnO nanoparticles by a novel sol–gel route

2007 ◽  
Vol 61 (14-15) ◽  
pp. 3265-3268 ◽  
Author(s):  
M. Vafaee ◽  
M. Sasani Ghamsari
Keyword(s):  
Zno Nanoparticles ◽  
Sol Gel

Investigation of Reaction Conditions on Alcohol-Thermal Synthesis of ZnO Nanoparticles

2008 ◽  
Vol 273-276 ◽  
pp. 198-203
Author(s):  
A. Esmaielzadeh Kandjani ◽  
Mohammad Reza Vaezi ◽  
Ali Shokuhfar ◽  
M. Farzalipour Tabriz
Keyword(s):  
Zno Nanoparticles ◽  
Uv Light ◽  
Sol Gel ◽  
Ammonium Bromide ◽  
X Ray Diffraction ◽  
Light Emitters ◽  
Thermal Methods ◽  
Thermal Synthesis ◽  
Poly Ethylene

ZnO nanoparticles because of their interesting properties and various morphologies, has become one of the most attractive nanomaterials for research objectives. Its significant properties has made it applicable in UV-Light emitters, varistors, transparent high power electronics, gas sensors, etc., [1]. Many approaches have been used to obtain ZnO nanoparticles, including: Hydrothermal [2], Solvothermal [3], Reverse micelles [4], Sol-Gel [4], Sonochemical [5], and Chemical Bath Deposition [6], etc. Among these, hydrothermal and alcohol-thermal methods have been extremely investigated. In this paper, buthanol as a solvent is used for synthesis of Zinc oxide at 130°C and 150°C at different reaction periods. Also the effects of different surfactants including: N_Cetyl_N,N,N,_trimethyl ammonium bromide (CTAB), Poly vinyl pyrolidon-K90 (PVP), Poly ethylene glycol-15000 (PEG) on obtained morphologies were investigated extremely. X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) were used for characterization of nanoparticles.

ZnO Nanoparticles for Antimicrobial Treatment of Leather Surface

2018 ◽  
Vol 69 (4) ◽  
pp. 767-771 ◽  
Author(s):  
Carmen Gaidau ◽  
Madalina Ignat ◽  
Ovidiu Iordache ◽  
Laura Madalina Popescu ◽  
Roxana Mioara Piticescu ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Control Method ◽  
Sol Gel ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Antimicrobial Treatment ◽  
Antimicrobial Efficiency ◽  
Film Forming ◽  
Bacteria And Fungi

The paper presents the antimicrobial performances of leather surfaces treated with ZnO nanoparticles as alternative to the use of volatile organic biocide materials. The hydrothermal synthesis of ZnO nanoparticles is described as an efficient and easy to control method compared to sol-gel methods. The characterization of crystallite morphology and size were measured by XRD, the nanopowder particles were assessed by TEM and the dispersion stability in water and in film forming polymers by dynamic light scattering (DLS). The ZnO nanoparticles were uniformly dispersed on leather surface by conventional technologies based on sprayed layers and were available for direct contact with bacteria and fungi. The treated leather surfaces were tested according to adapted diffusion standard methods and proved sensitivity against bacteria and resistance to fungi. The modification of dynamic contact angle of water on leather surface exposed to UV and visible light irradiation confirmed the photocatalytic generation of oxygen reactive species attributed to antimicrobial efficiency.

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