Films for agricultural applications, such as greenhouses films or mulching are generally made of polyolefins linear low-density polyethylene (LLDPE) polyethylene. However, the use biodegradable and/or compostable polymers is increasing, which enjoy additional advantage that they can be left on site since a fine life would gradually assimilated to underlying soil. Nevertheless, polymeric often d...

Molecular weight distribution (MWD) and short chain branching (SCBD) play a decisive role in the performance of linear low-density polyethylene (LLDPE). A model based on non-standard polymerization reaction scheme is developed for ethylene/α-olefin gas phase copolymerization fluidized bed reactor. Experimental MWD SCBD are simultaneously deconvoluted. The results obtained by this simultaneous d...

Linear low-density polyethylene (LLDPE) chains with different levels of branch content (BC), ranging from 10 to 80 branches/1000 C, distributed uniformly along the chain are simulated in vacuum at a temperature of 350K. The influence of BC on the relaxation and crystallization of LLDPE chains is studied. The collapse of the branched chains is found to occur via a local followed by a global coll...

This study proposes a comparison of the environmental impacts calculated with the Life Cycle Assessment (LCA) methodology of two on-site small-scale activated sludge total oxidation systems in linear low-density polyethylene (LLDPE) and vibrated reinforced concrete (VRC). The plants were designed to ensure a treatment capacity of 5, 10, 20 and 30 equivalent inhabitants (PE). The main aim of the...

The thermal and photooxidative behaviour of polyethylenes of different manufacturing histories (linear low, metallocene and high density) have been investigated by FTIR spectroscopy and the data related to the chemiluminescence (CL) and thermal analysis of the polymers. The CL intensity and activation energies for thermal decomposition were found to be dependent on the rates of oxidation of the...

In this study, we investigated the mechanical properties and inner structure of films linear low-density polyethylene (LLDPE) It was re-pelletized by a twin-screw extruder equipped with without molten-resin reservoir (MRR) different extrusion conditions. The thin sample (thickness: 0.1 mm) were prepared compression moulding machine then their analysed tensile test XRD, Imaging FT-IR, AFM RAMAN ...

The supercritical fluid extraction of essential oil from rosemary leaves and its subsequent impregnation in linear low-density polyethylene (LLDPE) films were studied. effects temperature (318 338 K), pressure (15 25 MPa) particle size (0.9 0.15 mm) on the yield investigated. Impregnation assays developed at two different values (12 20 MPa), (308 328 time (1 5 h). was increased by increasing de...