Abstract This paper deals with the reconstruction of the inlet temperature profile of a melted polyethylene (PE) flowing through an extrusion die. The inverse heat transfer problem is formulated as an optimisation problem by considering both the energy and the Navier-Stokes equations. It is solved by using the conjugate gradient algorithm. Experimental results are presented and show the effect ...

Until the advent of novel Enders catalysts, nonlinear rheological characterization polyethylene (PE) blends, containing up to 50 wt. % ultra-high molecular weight PE (UHMWPE, with average Mw > 106 g/mol) was unattainable. In this study, by melt blending a commercially available high-density (polymer matrix) and PE-reactor-blends (RBs), multimodal blends were prepared, their viscoelastic ...

BACKGROUND Antibacterial coatings of medical devices have been introduced as a promising approach to reduce the risk of infection. In this context, diamond-like carbon coated polyethylene (DLC-PE) can be enriched with bactericidal ions and gain antimicrobial potency. So far, influence of different deposition methods and ions on antimicrobial effects of DLC-PE is unclear. METHODS We quantitati...

There is need for bioplastics to replace some of the total petroleum plastics used in the world, and help alleviate environmental pollution. Compounding bioplastics with Polyethylene (PE) or Polylactic acid (PLA) containing a dairy-based bioplastic resulted in composites with good mechanical properties. In this study, mass ratios of a dairy-protein-based material (DBP) ranging from 0, 5, 10 and...

as milk is a liquid compound, it needs containers at every stages of movement. the first significant development in milk packaging created at the end of nineteenth century. the flavor changes and shelf life of pasteurized milk and ultra pasteurized milk are affected by processing conditions, packaging materials and microbial growth. off-flavor is an effective factor on reduction of milk quality...

Low density Polyethylene (designated hereafter as “PE”) is known for its inactivity, durability and resistance to degradation. For this reason adding pro-oxidants additives in PE matrix could be efficient elaborate a material designated Ox-PE, exhibiting chemical reactivity. This modification lead an enhancement of compatibility between Ox-PE other functionalized polymers. approach has been exp...

The greenhouse experiment was conducted to evaluate the effect of black polyethylene (PE) plastic mulch on yield and some quality parameters tomato. In study, PE material laid raised beds bare soil (not mulched) used as control. Mulch did not affect plant height, fruit shape index, chroma hue angle, firmness, soluble solids content, titratable acidity. Black had a positive influence yield. Sign...

The presence of a polyethylene (PE) fraction in recycled polypropylene (PP) will influence the processing as well mechanical and thermal properties polypropylene. objective this work has been to compare methods used determine PE PP, establishing calibration curves for each method. Plastics waste be mix different grades – homopolymers copolymers. It therefore tested how specific material affect ...

Antibacterial polyethylene (PE) packaging films were prepared by combining granulation and casting with antibacterial agents sodium dehydroacetate (SD) potassium sorbate (PS). The scanning electron microscopy (SEM) was used to characterize the structure of films, effects various additives on their physical, optical, microstructure, thermal stability, properties investigated. results show that w...