This work focuses on reactive extrusion to design polypropylene (PP) chains with long and short branching obtain non-linear behavior for the synthesis of low-density foams (<100 kg m?3) using a batch supercritical carbon dioxide (scCO2) foaming process. From maleic anhydride (MA) grafted PP (PP-g-MA), long-branched are performed [MA]/ [OH] reaction (with Sorbitol alcohol). On other hand, branch...

Abstract This article presents the results of a study on laser ablation selected thermoplastic polymers using an economical fiber with scanning galvanometer system and IR wavelength λ = 1064 nm. The aimed to develop comparative characteristics processes commonly used constructional thermoplastics, namely acrylonitrile butadiene styrene terpolymer (ABS), polystyrene (PS), poly(ethylene terephtha...

The fusion bonding between individual filaments of 3D printed short carbon-fibre reinforced polyamide 6 (SCF/PA6) in thin films manufactured using the fused filament fabrication (FFF) process has been studied. were deposited by an ‘in-plane’ mode or ‘interlayer’ mode. main characterisation technique employed was essential work fracture (EWF) method. Undertaking EWF tests on such is shown to be ...

Melting is a major step in plasticating single screw extrusion, but most of the existing phenomenological know how was gathered by performing Maddock-type experiments with homopolymers. Given the current widespread industrial use of polymer blends, it is worth determining whether the same mechanisms and mathematical models apply, or whether different sequences develop. This work reports the res...

Fibrous filters were fabricated using a novel melt co-extrusion and two-dimensional multiplication technology combined with a high pressure water jet delamination technique. The filters made from polypropylene (PP) / polyamide 6 (PA6) system exhibited micro to nano scale fibers having uniform fiber distribution and superior mechanical properties. Effects of film draw ratio upon co-extrusion on ...

The present work aims at investigating the thermal properties of a wide range of semicrystalline nanocomposites based on poly(amide)-6 (PA6), ethylene-vinyl acetate copolymer (EVA), poly(ε-caprolactone) (PCL) or polypropylene (iPP), in combination with various types of nanofillers (layered silicates, carbon nanotubes, sepiolite, or POSS). We report on the effect of nanofillers on the quasi-isot...

In this article our latest advances in the development of efficient barrier systems against microand nano-particulate materials are presented. Nanofibrous polyamide 6 (PA6) mats were fabricated by electrospinning onto a nonwoven viscose substrate. The influence of electrospinning parameters including solution concentration, viscosity, and conductivity, were studied for the production of nonwove...