Polymer Engineering and Science articles from January 2007

Polymer Engineering and Science archives from January 2007

A comprehensive experimental study and numerical modeling of parison formation in extrusion blow molding.(Author abstract)
January 1, 2007... INTRODUCTION In the extrusion blow molding process, the first step in the molding cycle is the parison formation. The extruded parison is then inflated to take on the shape of the surrounding mold and finally the part is cooled and...

Morphology development of PC/PE blends during compounding in a twin-screw extruder.(polycarbonate/polyethylene)
January 1, 2007... INTRODUCTION Polymer blends are widely used because they provide better performance than homopolymers and they are more cost-efficient than synthesizing new polymers [1, 2]. Because most polymer pairs are thermodynamically immiscible and...

Reactive acrylic liquid rubber with terminal and pendant carboxyl groups as a modifier for epoxy resin.
January 1, 2007... INTRODUCTION Epoxy resins are a class of versatile thermosetting polymers, which are widely used in structural adhesives, surface coatings, and composites [1]. This is because of their high strength, low creep, very low cure shrinkage,...

PTC effect and structure of polymer composites based on polyethylene/polyoxymethylene blend filled with dispersed iron.(positive temperature coefficient)
January 1, 2007... INTRODUCTION The investigation of conductive polymer composites attracted large interest because of the wide possibilities of industrial applications [1-3]. Such composites consist of a thermoplastic or thermosetting matrix filled with...

Preparation and properties of electrospun poly(vinyl alcohol)/silver fiber web as wound dressings.
January 1, 2007... INTRODUCTION An important and growing part of the textile industry is the medical and related healthcare and hygiene sector. The extent of the growth is due to constant improvements and innovations in both textile technology and medical...

Nitroxyls for scorch suppression, cure control, and functionalization in free-radical crosslinking of polyethylene.
January 1, 2007... INTRODUCTION Crosslinking of polyolefins is done for a variety of applications in order to achieve one or more of the following performance attributes: increased resistance to high temperature deformation, increased flow resistance, good...

Kinetic analysis of two DSC peaks in the curing of an unsaturated polyester resin catalyzed with methylethylketone peroxide and cobalt octoate.(differential scanning calorimetry)
January 1, 2007... INTRODUCTION The unsaturated polyester (UP) resins cured with styrene are widely used in many industrial fields by their great benefits and their relatively low cost [1]. Before making any mechanical or physical analysis on such materials,...

Recovery and characterization of pure poly(3,4-ethylenedioxythiophene) via biomimetic template polymerization.
January 1, 2007... INTRODUCTION Electronically conducting polymers derived from substituted thiophenes constitute an important class of conjugated polymers [1]. Because of their unique electrical and optical properties based on the substantial [pi]-electron...