A method is described for the wet spinning of alginate fibers with a loading of single-walled carbon nanotubes as high as 23 wt%. Electrostatic assembling of polyelectrolytes and nanotubes coated with sodium dodecyl sulfate is exploited by using calcium as a cross-linking agent. The Young’s modulus of these fibers depends non-monotonically on nanotube concentration which is explained using Halp...

Metallic nickel nanowires with excellent physical properties have been introduced into polydimethylsiloxane (PDMS) matrix to form polymer nanocomposites. Nanowires were synthesized by template-assisted electrochemical deposition. By utilizing ferromagnetic nickel nanowires, small external magnetic field can be used to control their alignment and distribution during composite synthesis. Unlike d...

The mechanical properties of nanocomposites are significantly affected by the dispersion nanofillers. In this study, synergetic effect hybrid fillers, including surfacemodified montmorillonite (MMT) nanoclay and graphene nanoplatelets (GNPs) on quality characteristics epoxy-based was investigated. It manifested that incorporation GNPs-MMT into pure epoxy improves consequently, tensile flexural ...

This study evaluated the influence of cellulose nanocrystals (CNC) content on properties epoxy nanocomposites. The CNC were obtained from microcrystalline by acid hydrolysis. 4.0, 5.5 and 7.0% untreated incorporated into resin. Sonication was used to disperse in thermal stability, glass transition temperature degree conversion reduced as observed Thermogravimetry Differential Scanning Calorimet...

Mineralized collagen fibrils have been usually analyzed like a two-phase composite material where crystals are considered as platelets that constitute the reinforcement phase. Different models have been used to describe the elastic behavior of the material. In this work, it is shown that when Halpin-Tsai equations are applied to estimate elastic constants from typical constituent properties, no...

One of the most relevant properties of composite materials to be considered is stiffness. Fiberglass has been used traditionally as a fibrous reinforcing element when stiff materials are required. However, natural fibers are been exploited as replacements for synthetic fibers to satisfy environmental concerns. Among the different natural fibers, wood fibers show the combination of relatively hi...

This study comparatively analyzed the behavior of elastic properties by aspect ratio ultra-high molecular weight polyethylene (UHMWPE) fibers that are added when creating a composite material polypropylene and UHMWPE. The volume fraction (VF) UHMWPE to was fixed at 5%. were lumped for analysis according oriented on matrix; they using Halpin–Tsai model, which involves theoretical approach finite...

This manuscript addresses the EM algorithm developed in Halpin & De Boeck (in press). The runtime of the algorithm grows quadratically in the number of observations, making its application to large data sets impractical. A strategy for improving efficiency is introduced, and this results in linear growth for many applications. The performance of the modified algorithm is assessed using data sim...