Polymer Engineering and Science articles from February 2005

Polymer Engineering and Science archives from February 2005

Rheological and structure investigation of shear-induced crystallization of isotactic polypropylene.
February 1, 2005... INTRODUCTION The isothermal crystallization of semi crystalline polymers may strongly be influenced when external physical fields are applied. Indeed, the flow-induced crystallization (FIC) phenomenon can increase the overall...

Poly(ester-urethane)s synthesized using polyoxalate diols.
February 1, 2005... INTRODUCTION Aliphatic polyesters are well known as biodegradable polymers, some of which are already commercialized. However, it is not so easy to obtain the high molecular weight materials. One of the useful methods to overcome this...

Nanocomposite systems based on unsaturated polyester and organo-clay.
February 1, 2005... INTRODUCTION Nanocomposite systems, in which the filler has a dimension in the nanometer range in at least one spatial direction, may be divided into two categories: intercalated systems and exfoliated systems. Intercalated nanocomposites...

Transient shear rheology and rheo-optical microstructural characterization of a thermotropic liquid crystalline polymer.
February 1, 2005... INTRODUCTION Over the past two decades, thermotropic liquid crystalline polymers (TLCPs) have attracted great attention [1-9]. These materials have a favorable combination of high mechanical strength, high stiffness, and low thermal...

Theoretical model for flash generation.(polymers in electronic appliances)
February 1, 2005... INTRODUCTION With the downsizing of electronic appliances, their parts are smaller and more complicated in shape than before. To mold these parts, higher flowability is required for materials. On the other hand, with the increase in...

Mechanical properties of polymer-ceramic nanocomposite coatings by depth-sensing indentation.
February 1, 2005... INTRODUCTION Optically transparent and electrically conductive nanocomposite coatings were developed using lattices (~300 nm) as the matrix starting polymer and antimony-doped tin oxide (ATO) nanoparticles (~15 nm) as the conductive filler...

Evaluation of starch-PE multilayers: processing and properties.(polyethylene)
February 1, 2005... INTRODUCTION Multilayer systems are used more and more in packaging. In the last two decades, the technology of complex barrier films has undergone considerable development. The association of different materials with complementary...

Influence of hydroxyl functionalized hyperbranched polymers on the thermomechanical and morphological properties of epoxy resins.
February 1, 2005... INTRODUCTION Epoxy resins are widely used as matrices in advanced fiber reinforced composites because of their superior thermal, mechanical, and corrosion resistance properties. However the major drawback that can limit the spread of epoxy...

Effect of processing conditions on flash generation.(polymer engineering)
February 1, 2005... INTRODUCTION With the downsizing of electrical appliances and the increase in clock frequency of microprocessors, more heat is emitted in the appliances than before. Also, the stream of downsizing requires packing electrical parts as...