Motivated by the extensive application of carrageenans, this work prepared carrageenan
fibers via wet spinning. The optimum spinning parameters were explored by means of an …

The main goal of this work study is to study the influence of mechanical cold drawing and
drawing velocity on the molecular orientation and physical structure parameters of isotactic …

Optical microscopes and their extensions are non-destructive essential tools for
characterizing the physical properties of polymeric materials. They are extensively used in …

The development of crystallinity and orientation during the melt spinning of polyamides
(nylon 66) was investigated. This study reports the question of the orientation and …

The thermal effects of the necking in fiber drawing, with respect to the change of
microstructure and deformation thermodynamics, have been studied in this paper. The …

A proposed model for reconstructing the refractive indices distribution in three dimensions is
introduced. The reconstruction process requires a single multiple-beam interference pattern …

We present a method for evaluating the 3D refractive indices and 3D true stress and/or 3D
true strain profiles of “isotactic polypropylene iPP” fibers during necking deformation …

Creep deformation under constant load leads to rupture when the polymer chains can no
longer separate and accommodate the load. This fracture phenomenon is investigated …

The refractive index profile and the birefringence of fibers are important parameters in many
fields of applications. The values of the refractive indices of the optical fiber give useful …

Changes in the different structural parameters of iPP fibers during the dynamically cold
drawing process were characterized. Using the dynamic mechanical cold drawing device …