Thermo-oxidative degradation of low-density polyethylene close to industrial processing conditions

1981 ◽  
Vol 26 (10) ◽  
pp. 3409-3423 ◽  
Author(s):  
A. Hoff ◽  
S. Jacobsson
Keyword(s):  
Oxidative Degradation ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Processing Conditions ◽  
Industrial Processing ◽  
Thermo Oxidative Degradation

The effect of comonomer concentration and distribution on the photo-oxidative degradation of linear low density polyethylene films

Polymer ◽  
2017 ◽  
Vol 119 ◽  
pp. 66-75 ◽  
Author(s):  
Yu-Chieh Hsu ◽  
Rowan W. Truss ◽  
Bronwyn Laycock ◽  
Michael P. Weir ◽  
Timothy M. Nicholson ◽  
...  
Keyword(s):  
Oxidative Degradation ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Polyethylene Films

Multi-component analysis of low-density polyethylene oxidative degradation

2006 ◽  
Vol 91 (11) ◽  
pp. 2775-2785 ◽  
Author(s):  
Mario Salvalaggio ◽  
Roberto Bagatin ◽  
Marco Fornaroli ◽  
Sergio Fanutti ◽  
Stefano Palmery ◽  
...  
Keyword(s):  
Oxidative Degradation ◽  
Component Analysis ◽  
Low Density Polyethylene ◽  
Low Density

scholarly journals Experimental Investigation of the Melt Shear Viscosity, Specific Volume and Thermal Conductivity of Low-Density Polyethylene/Multi-Walled Carbon Nanotube Composites Using Capillary Flow

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1230 ◽  
Author(s):  
Nicoleta-Violeta Stanciu ◽  
Felicia Stan ◽  
Catalin Fetecau
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Shear Viscosity ◽  
Specific Volume ◽  
Melt Processing ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Processing Conditions ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites

Understanding the flow behavior of polymer/carbon nanotube composites prior to melt processing is important for optimizing the processing conditions and final product properties. In this study, the melt shear viscosity, specific volume and thermal conductivity of low-density polyethylene (LDPE) filled with multi-walled carbon nanotubes (MWCNTs) were investigated for representative processing conditions using capillary rheometry. The experimental results show a significant increase in the melt shear viscosity of the LDPE/MWCNT composite with nanotube loadings higher than 1 wt.%. Upon increasing shear rates, the composites flow like a power-law fluid, with a shear-thinning index less than 0.4. The specific volume decreases with increasing pressure and nanotube loading, while the pVT transition temperature increases linearly with increasing pressure. The thermal conductivity of the LDPE/MWCNT composite is nearly independent of nanotube loading up to the thermal percolation threshold of 1 wt.% and increases linearly with further increases in nanotube loading, reaching 0.35 W/m·K at 5 wt.%. The Carreau–Winter and Cross viscosity models and Tait equation, respectively, are able to predict the shear viscosity and specific volume with a high level of accuracy. These results can be used not only to optimize processing conditions through simulation but also to establish structure–property relationships for the LDPE/MWCNT composites.

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