Polystyrene-block-polyisoprene forms micelles in supercritical and subcritical propane upon cooling and decompression. These micelles decompose upon heating and compression. At constant polymer concentration, the micellization points, both isobaric and isothermal, fall around a decreasing boundary curve in pressuretemperature coordinates. This micellization boundary curve lies above the copolym...

Polystyrene multiwell plates with integrated optodes act as multiple closed-system respirometers that enable the simultaneous measurement of oxygen consumption in small animals. However, the diffusion of oxygen through polystyrene needs to be taken into consideration. Here we provide an equation that accounts for the empirically determined rate of oxygen through a polystyrene well when calculat...

Teichroeb and Forrest [Phys. Rev. Lett. 91, 016104 (2003)] image gold nanosphere embedment into a polystyrene surface and imply the existence of a liquid surface layer. We use a viscoelastic contact mechanics model of their results to give a contrary interpretation. The surface interactions between gold and polystyrene and the indentation depth determine the loads on the nanospheres. Using bulk...

We have investigated two polymeric materials for incorporating high-Z metallic elements into ablation layers. Although each method ut~lizes solution-coating techniques, the materials and the resulting structures are basically different. The first, sulfonated polystyrene, which has a metal content of up to 5 atomic percent, is easily prepared and can easily be coated from solution. The second ma...

Bonding of hydrophobic plastic materials to wood to create new wood-plastic (polystyrene) materials with improved mechanical and physical properties that incorporate the desirable features of each constituent is difficult to achieve, This is due to poor interfacial adhesion between the wood and polystyrene components because of their inherent incompatibility. New, well-defined, tailored cellulo...

The paper describes a new type of calorimeter that can be quickly put into operation for determining absorbed dose at a point in polystyrene. It also describes a unique method of decreasing drifts in electrical signals caused by temperature gradients. Two calibrated thermistors were placed close together between sandwiched polystyrene discs that were immersed in water. The assembly was irradiat...

Di ver sos ti pos de po li es ti re no mo di fi ca dos fo ram ob ti dos atra vés da po li me ri za ção por en xer tia (graft poly me ri za ti on) de es ti re no na pre sen ça dos se guin tes mo di fi ca do res: co po lí me ro de eti le no-acetato de vi ni la (EVA); po li e ti le no de ba i xa den si da de (PE) e po li bu ta di e no (PB). Os mo di fi ca do res fo ram uti li za dos em se pa ra do...

This paper demonstrates the viability of in-situ transmission electron microscopy for studying the deformation mechanisms of polymer nano-composites. In-situ straining studies are performed on carbon multiwalled nanotube (MWNT)-polystyrene composite films. The experiments show that load transfer across the nanotube-polystyrene interface is operative well into the plastic deformation regime of t...