Effect of Degree of Dispersion of Polyhydroxybutyrate on the Thermal Oxidation of Self-Degrading Composite Films Based on Low-Density Polyethylene

2001 ◽  
Vol 28 (1) ◽  
pp. 23-27
Author(s):  
A.A. Ol'khov ◽  
L.S. Shibryaeva ◽  
A.L. Iordanskii ◽  
S.V. Vlasov ◽  
S.A. Loginova
Keyword(s):  
Thermal Oxidation ◽  
Composite Films ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Degree Of Dispersion

Thermal oxidation of self-degradable composite films based on low-density polyethylene

2004 ◽  
Vol 92 (3) ◽  
pp. 1392-1396 ◽  
Author(s):  
A. A. Ol'Khov ◽  
L. S. Shibryaeva ◽  
A. L. Lordanskii ◽  
G. E. Zaikov
Keyword(s):  
Thermal Oxidation ◽  
Composite Films ◽  
Low Density Polyethylene ◽  
Low Density

scholarly journals Dielectric properties: a gateway to antibacterial assay—a case study of low-density polyethylene/chitosan composite films

2014 ◽  
Vol 46 (7) ◽  
pp. 422-429 ◽  
Author(s):  
Madathil Sunilkumar ◽  
Ambalakkandy Abdul Gafoor ◽  
Abdulaziz Anas ◽  
Areepuravan Parakkal Haseena ◽  
Athiyanathil Sujith
Keyword(s):  
Dielectric Properties ◽  
Composite Films ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Antibacterial Assay ◽  
Chitosan Composite

scholarly journals Development of technology for producing biodegradable hybrid composites based on polyethylene, starch, and monoglycerides

2021 ◽  
Vol 15 (6) ◽  
pp. 44-55
Author(s):  
I. Yu. Vasilyev ◽  
V. V. Ananyev ◽  
V. V. Kolpakova ◽  
A. S. Sardzhveladze
Keyword(s):  
Tensile Strength ◽  
Mechanical Performance ◽  
Hybrid Composites ◽  
Composite Films ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Elongation At Break ◽  
Biodegradable Composite ◽  
Develop Technology ◽  
Distilled Monoglycerides

Objectives. This work aimed to develop technology to produce biodegradable hybrid composite (BHC) films based on low-density polyethylene (LDPE) 115030-070 and thermoplastic starches (TPS) of various origins (corn, pea, and rice), with distilled monoglycerides as the plasticizer. The properties of the produced BHC films were studied and the optimal native starch : glycerol : monoglycerides ratio is proposed.Methods. TPS and BHC films based on this material were produced from different types of native starches in laboratory extruders (Brabender and MashPlast, Russia), and the extruded melts were subjected to ultrasonic vibrations. The structure and appearance of the BHC films were studied using scanning electron microscopy and rheology. Their biodegradability was assessed by immersing them in biocompost for three months. To evaluate the mechanical performance of the BHC films produced with and without ultrasound, the changes in tensile stress and elongation at break were determined during the biodegradation process.Results. The BHC films had a homogeneous structure, except small agglomerates (non-melted starch grains), which did not reduce their quality. The films with monoglycerides had high tensile strength, which was comparable with low-density polyethylene. After removing samples of the BHC films from the biocompost, their tensile strength decreased by 20%, which shows their biodegradability.Conclusions. The produced biodegradable composite films and the technology used to produce them will be applicable for the packaging industry to reduce environmental impact.

scholarly journals Characterization of Nanosilica/Low-Density Polyethylene Nanocomposite Materials

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Malek Alghdeir ◽  
Khaled Mayya ◽  
Mohamed Dib
Keyword(s):  
Composite Films ◽  
Far Infrared ◽  
Tensile Tests ◽  
Optical Measurements ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Melt Mixing ◽  
Ir Radiation ◽  
Ldpe Composites ◽  
Nanosilica Particles

Six ratios of nanosilica particles were employed to fabricate low-density polyethylene (LDPE) composites using melt mixing and hot molding methods. Several composite films with different ratios (0.5, 1, 2.5, 5, 7.5, and 10 wt%) of SiO2 were prepared. The obtained composite films were identified and characterized by Fourier-transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy (UV-VIS). At a specific mixing ratio, far infrared radiation transmittance was prohibited while the ultraviolet-visible transmittance is allowed; this will be explained in detail. Optical measurements show that the composite films prevent the transmission of IR radiation near 9 μm and allow UV-VIS transmission during sun-shining time. The mechanical behaviour of a nanosilica-reinforced LDPE composite was studied using tensile tests. The addition of 1 wt% nanosilica has successfully enhanced the mechanical properties of the LDPE material.

Fabrication of Carbon Nanotube/Low Density Polyethylene Composites for Strain Sensing

2011 ◽  
Vol 495 ◽  
pp. 33-36
Author(s):  
Radwa R. Abdel Chafy ◽  
Mustafa H. Arafa ◽  
Amal M. K. Esawi
Keyword(s):  
Electrical Resistance ◽  
Composite Films ◽  
Load Condition ◽  
Strain Range ◽  
Low Density Polyethylene ◽  
Gauge Factor ◽  
Low Density ◽  
Strain Sensing ◽  
Percolation Behavior ◽  
Measured Resistance

Carbon Nanotubes (CNTs) have shown remarkable electrical, piezoresistive properties as well as other physical properties. The aim of this study is to investigate the potential of CNT-polymer composites in strain sensing using low density polyethylene (LDPE) polymer. Different CNT loadings were used (0, 1, 2, 3.5, 5, 6.5 and 8 weight %). CNT/LDPE composite films of 1mm thickness were fabricated using compression molding. The electrical resistance at no load condition was measured and the percolation behavior was obtained. The percolation threshold was found to be in the range of (2-5) wt%, where a decrease in resistivity by 5 orders of magnitude was observed. The sensitivity (gauge factor – GF) of the films was evaluated by correlating the strain applied with the simultaneously measured resistance. For a strain range of up to 320 µε, a gauge factor of 200 was achieved at a CNT loading of 5 wt%.

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