Polymer Engineering and Science articles from June 2008

Polymer Engineering and Science archives from June 2008

Review and critical analysis of the morphology of random lonomers across many length scales.(Technical report)
June 1, 2008... This review presents a description of what is known about ionomer morphology. All papers on ionomer morphology are not included in this review; but all relevant questions about ionomer morphology are posed and answered as completely as...

Role of structural modification on the electrical properties of poly(ethylene terephthalate) irradiated with 90-MeV carbon ion beam.(Technical report)
June 1, 2008... Thin films of poly(ethylene terephthalate) (PET) having a thickness of 100 [micro]m were exposed to different ion fluence of swift heavy ions of carbon in the range of 5 x [10.sup.11] - 5 x [10.sup.13] ions/[cm.sup.2]. The effect of ion beam on...

Crystallization and thermal behavior of multiwalled Carbon Nanotube/Poly(butylenes terephthalate) composites.(Technical report)
June 1, 2008... Multiwalled carbon nanotube/poly(butylene terephthalate) composites (PCTs) were prepared by melt mixing. The nonisothermal crystallization and thermal behavior of PCTs were respectively investigated by X-ray diffrac-tometer, polarized optical...

Coupling of various methods for the investigation of the morphology of blends of natural rubber and polybutadiene.(Technical report)
June 1, 2008... The aim of this work is to develop a set of experimental methods to investigate the morphology of blends of two immiscible elastomers, namely natural rubber (NR) and polybutadiene (PB). Selective extraction, dynamic mechanical spectroscopy in...

Study on characterization and properties of nanosilica-filled thermoplastic vulcanizates.(Technical report)
June 1, 2008... Thermoplastic vulcanizates (TPVs) are a special class of thermoplastic elastomer, produced by simultaneously mixing and cross-linking a rubber with a thermoplastic at elevated temperature. Dicumyl peroxide-cured TPVs based on blends of maleated...

Tocopherol-targeted membrane adsorbents prepared by hybrid molecular imprinting.(Technical report)
June 1, 2008... A hybrid molecular imprinting technique for a tocopherol target enabled the preparation of novel membrane adsorbents. [alpha]-Tocopherol methacrylate was used as a functional monomer, and molecular imprinted polymer (MIP) was prepared by...

Prediction of processability at extrusion coating for low-density polyethylene.(Technical report)
June 1, 2008... The neck-in level and the maximum drawdown speed at extrusion coating for low-density polyethylene are studied with the evaluation of the rheological properties in the molten state and the dilute solution properties. It is found that the...

Influence of dispersed organophilic montmorillonite at nanometer-scale on crystallization of poly(L-lactide).(Technical report)
June 1, 2008... Atsuhiro Fujimori, Naoya Ninomiya Toru Masuko Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa, Yamagata 992-8510, Japan We investigated the effects of surface-treated organophilic clay on...

Recycled and virgin LDPE as rheology modifiers of lithium lubricating greases: a comparative study.(low-density polyethylene )(Technical report)
June 1, 2008... In this work, a new application for recycled low-density polyethylene (LDPE), as rheology modifier of standard lithium lubricating grease formulations, was studied. The effectiveness of this additive was compared with that achieved with a...

Characterization of processing effects in HIPS-CNF composites using thermogravimetric analysis.(high-impact polystyrene-carbon nanofibers)(Technical report)
June 1, 2008... To completely establish the processing-structure-property relationships of polymer composites such as Carbon Nanofibers (CNFs) in high-impact polystyrene, it is necessary to understand the effects of different processes and processing...

What is the role of "Pressure" in the use of capillary and slit flows to determine the shear-rate dependent viscosity of a viscoelastic fluid?(Technical report)
June 1, 2008... The purpose of this review article is to clear the confusion created by some investigators, who erroneously thought that the pressure transducers mounted on the wall of a capillary or slit die measured a quantity that could meaningfully be...

Modeling and measurement of glass transition temperatures of energetic and inert systems.(Technical report)
June 1, 2008... In this article, measurements of glass transition temperature [T.sub.g] changes of two energetic material blend systems were carried out using the differential scanning calorimetry (DSC) technique. On one hand, experimental [T.sub.g] values...

Characterization and thermal degradation of polyimides derived from ODPA and several alicyclic-containing diamines.(oxydiphthalic anhydride)(Technical report)
June 1, 2008... Thermal properties of polyimides with main chain containing alicyclic units derived from 3,3' 4,4'-oxydiphthalic anhydride (ODPA) and several alicyclic-containing diamine monomers, including 1,4-bis (4-aminophenoxymethylene) cyclohexane (BAMC),...

Fluid phase behavior modeling of [CO.sub.2] + molten polymer systems using cubic and theoretically based equations of state.(Technical report)
June 1, 2008... Phase equilibrium data of [CO.sub.2] + molten polymer systems are of great relevance for chemical engineers because these are necessary for the optimal design of polymer final-treatment processes. This kind of processes needs information about...

Electrospinning of polyamides with different chain compositions for filtration application.(Technical report)
June 1, 2008... Electrospinning of several polyamides, PA6, PA66, PA612, PA614, PA1012, and PA1014, having different chain compositions and lengths of diacid and diamine segments, was demonstrated. Electrospinnability and fiber production rate of these...

Modeling of three-dimensional flow and heat transfer in polystyrene foam extrusion dies.(Technical report)
June 1, 2008... A three-dimensional mathematical model was developed to investigate the nonisothermal, non-Newtonian polymer flow through the dies used in the polystyrene foam extrusion process. The model, based on the computational fluid dynamics (CFD) code,...

Improvement of compression set property of Ethylene vinyl acetate copolymer/ethylene-1-butene copolymer/organoclay nanocomposite foams.(Technical report)
June 1, 2008... To chemically bond polymer and organoclay, low molecular weight trimethoxysilyl-modified polybutadiene (Sil-ane) was used in this study. When Silane was added, eth-ylene-vinyl acetate copolymer (EVA)/ethylene-1-butene copolymer (EtBC)/methyl...

Rheological properties, flow visualization and extrudate swell of NR compound by rotating-die rheometer.(natural rubber)(Technical report)
June 1, 2008... An experimental apparatus coupled with a rotating die system was especially designed and manufactured to study the rheological properties, flow patterns and swelling behavior of natural rubber (NR) compound for different shear rates and die...

Effect of viscous dissipation on the temperature of the polymer during injection molding filling.(Technical report)
June 1, 2008... Hamdy Hassan, Nicolas Regnier, Cyril Pujos, Guy Defaye Laboratoire TREFLE, UMR 8508, CNRS, Universite Bordeaux 1, 33607 Pessac, France During injection molding, viscous dissipation changes the temperature distribution by playing the...

Super-ductile PBT alloy with excellent heat resistance.(polybutyiene terephthalate)(Technical report)
June 1, 2008... A super-ductile PBT alloy with excellent heat resistance was successfully fabricated by reactive blending of poly(butyiene terephthalate) (PBT) with poly(ethylene-co-glycidyl methacrylate) together with linear low density polyethylene (LLDPE)...

Preparation and thermo-mechanical properties of heat-resistant epoxy/silica hybrid materials.(Technical report)
June 1, 2008... The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education and Department of Macromolecular Science, Fudan University, Shanghai 200433, China Innovative Systems and Materials Laboratory, Shanghai Research Institute,...

Polyurethane triblock copolymers with mono-disperse hard segments. influence of the hard segment length on thermal and thermomechanical properties.(Technical report)
June 1, 2008... Polyurethane triblock copolymers were synthesized by reacting 4,4-methylenebis(phenyl isocyanate) (MDI)-endcapped poly(tetramethylene oxide) (PTMO} with mono-amine-amide (MMA) units. Four different MMA units were used, i.e. no-amide (6m),...

Polymer Engineering & Science.
June 1, 2008... Information for Authors Polymer Engineering & Science is pleased to offer authors web-based manuscript submission and peer-review. Submit your manuscripts online at http://mc.manuscriptcen-tral.com/pes. Manuscripts submitted online are...