Physico-chemical modifications of superficial regions of low-density polyethylene (LDPE) film under corona discharge

Polymer ◽  
1984 ◽  
Vol 25 (6) ◽  
pp. 766-772 ◽  
Author(s):  
B. Catoire ◽  
P. Bouriot ◽  
O. Demuth ◽  
A. Baszkin ◽  
M. Chevrier
Keyword(s):  
Corona Discharge ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Chemical Modifications ◽  
Ldpe Film ◽  
Physico Chemical

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

2014 ◽  
Vol 27 ◽  
pp. 53-64 ◽  
Author(s):  
Maryam Jokar ◽  
Russly Abdul Rahman ◽  
Luqman Chuah Abdullah
Keyword(s):  
Silver Nanoparticles ◽  
Growth Parameters ◽  
Chemical Reduction ◽  
Barrier Properties ◽  
Nanocomposite Films ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Ldpe Film ◽  
Silver Nanocomposites ◽  
Silver Nanocomposite

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.

Surface Treatment on Low Density Polyethylene with TiO2 Nano-Particles for Packaging Printing

2012 ◽  
Vol 506 ◽  
pp. 615-618 ◽  
Author(s):  
D. Phokhaphaiboonsuk ◽  
Lerpong Jarupan ◽  
Chiravoot Pechyen ◽  
C. Nandhivajrin
Keyword(s):  
Titanium Dioxide ◽  
Surface Energy ◽  
Epoxy Resin ◽  
Film Surface ◽  
Nano Particles ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Epoxide Group ◽  
Ldpe Film ◽  
Coated Film

The surface of low density polyethylene (LDPE) film was modified by coating with titanium dioxide (TiO2) nano-particles in epoxy resin in order to increase the surface energy. Epoxy/TiO2 yielded a bridging effect between TiO2 particles and polymer matrix, while epoxide group played a role as dispersant. The surface energy of coated film and uncoated film were compared. The modification of LDPE surface used different two TiO2 nano-particles in size (100 and 150 nm) and weight loadings (0.5, 1.0, 2.0 and 4.0 %wt/wt). The results showed that the surface energy of LDPE films were raised up after the coating but it was still lower than the commercial film. Changes in colors and the agglomeration of TiO2 particles caused by non-homogeneity to the epoxy resin were detected on the film surface. To this end, it can be concluded that the TiO2 coating improves the printability on LDPE film.

Optimization of adhesive joints of low density polyethylene (LDPE) composite laminates with polyolefin foam using corona discharge plasma

2009 ◽  
Vol 114 (5) ◽  
pp. 2971-2977 ◽  
Author(s):  
Monica Pascual ◽  
Oscar Calvo ◽  
Lourdes Sanchez-Nácher ◽  
Maria Angeles Bonet ◽  
David Garcia-Sanoguera ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Composite Laminates ◽  
Discharge Plasma ◽  
Adhesive Joints ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Corona Discharge Plasma
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