The structure-property relationships of LLDPE–EVOH blend films fabricated by multiplication extrusion

Recent Updates on the Barrier Properties of Ethylene Vinyl Alcohol Copolymer (EVOH): A Review

“…There are claims that microlayer extrusion technology leads to improved physical and barrier properties of EVOH. [59,60] Li et al (2009) prepared a material with alternating layers of PP and PP/EVOH blend through microlayer coextrusion. The morphology of the EVOH phase was changed from a zero-dimensional sphere to a one-dimensional fiber, then to a two-dimensional sheet with the increase of the layer number, which caused an improvement in the gas barrier properties when compared to a conventional PP/EVOH blend.…”

“…The P CO 2 was hardly effected by the application of FAE. [71] Zhang et al (2015) on the other hand found that a LLDPE/EVOH44 (50/50 wt%) blend extruded with up to 8 multipliers caused both the P O 2 and P H 2 O to increase when the number of multipliers increased, because the multipliers broke the elongated and layer-like morphology of the blend. When no multiplier was used, the LLDPE/EVOH blend had a P O 2 , that was 1000 times lower than that of neat LLDPE.…”

“…When no multiplier was used, the LLDPE/EVOH blend had a P O 2 , that was 1000 times lower than that of neat LLDPE. [60] 2.4. Additives and nano-composites…”

Influence of different alkyl‐methylimidazolium tetrafluoroborate ionic liquids on the structure of pebax® films. Consequences on thermal, mechanical, and water sorption and diffusion properties

“…The control of polymer hydration properties is a key parameter for a wide range of applications, going from biocompatible materials to barrier materials, packaging, breathable materials, or gas separation membranes. Different ways allowing the control of the hydrophilic/hydrophobic balance of the materials through blending route, copolymer route, (nano)composite approach, or development of hybrid organic/inorganic materials have been investigated to obtain a better control of both functional and mechanical properties for these applications. Among them, the copolymer route appears as particularly interesting as it allows to easily design different block lengths and natures and therefore to adjust functional properties.…”

Effectiveness of X-ray computed microtomography to determine structure-property relationships of Gutta-percha

“…The degree of loading and the distribution of the particles within the Gutta-percha modulate the mechanical properties and allow the practitioner to tailor the material to the specific needs of the patient and the dental repair work that is being performed. It is well established that the mechanical properties of the material will vary with the volume fraction of the fillers, but it has recently been pointed out that the particle distribution can also be an important factor 6,7) . Yet, very little information is available regarding the internal structure of the material.…”