Prediction of the Viscoelastic Behavior of Low-Density Polyethylene Produced in High-Pressure Tubular Reactors

2015 ◽  
Vol 9 (3) ◽  
pp. 271-284 ◽  
Author(s):  
Prokopios Pladis ◽  
Dimitrios Meimaroglou ◽  
Costas Kiparissides
Keyword(s):  
High Pressure ◽  
Viscoelastic Behavior ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Tubular Reactors

scholarly journals Mathematical Modelling of Rheological Properties of Low-density Polyethylene Produced in High-Pressure Tubular Reactors

2021 ◽  
Vol 54 (3) ◽  
pp. 378-382
Author(s):  
Maira L. Dietrich ◽  
Adriana Brandolin ◽  
Claudia Sarmoria ◽  
Mariano Asteasuain
Keyword(s):  
High Pressure ◽  
Mathematical Modelling ◽  
Rheological Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Tubular Reactors

Bionanocomposites with enhanced antimicrobial activity and photodegradability based on low density polyethylene and nano TiO2/organoclay

e-Polymers ◽  
2014 ◽  
Vol 14 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Pouya Katbab ◽  
Maryam Alizadeh ◽  
Babak Kaffashi ◽  
Ali Asghar Katbab
Keyword(s):  
Electron Microscopy ◽  
Uv Light ◽  
Viscoelastic Behavior ◽  
Barrier Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Mechanical Spectroscopy ◽  
Melt Compounding ◽  
Linear Viscoelastic Behavior ◽  
Nano Titanium Dioxide

AbstractBionanocomposite materials with enhanced photodegradability and bactericidal activity, as well as improved gas barrier properties, were manufactured by incorporating silicate nanolayers into the structure of low density polyethylene (LDPE) filled with nano titanium dioxide (TiO2) via melt compounding. Effects of interfacial compatibilization upon developed microstructure were studied by incorporating maleated LDPE into the nanocomposites formulation. Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and rheo-mechanical spectroscopy (RMS) techniques were conducted to characterize the microstructure of the nanocomposites. Interfacially compatibilized TiO2/organoclay (OC) based nanocomposites exhibited shorter induction time for the onset of photodegradation, and an acceptable inactivation of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) microbe cells upon UV light irradiation, indicating enhanced photoactivity of the hybridized TiO2/OC nanosystem. TiO2/OC-based nanocomposites exhibited increased melt viscosity and pseudo solid like characteristics in melt linear viscoelastic behavior. Moreover, TiO2/OC-based nanocomposites presented improved barrier properties, which make such materials applicable for packaging applications.

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