Showing papers in "Polymer in 2006"

TL;DR: A comprehensive overview on the development of polymeric membranes having advanced or novel functions in the various membrane sepn processes for liq. and gaseous mixts can be found in this paper.

TL;DR: In this paper, the electrical and thermal conductivity of nanoparticulate filled epoxy resins is evaluated with respect to the influence of the type of carbon nanotubes (SWCNT, DWCNT and MWCNT).

TL;DR: In this paper, the state of the art of composite polymer electrolytes (CPE) in view of their electrochemical and physical properties for the applications in lithium batteries is reviewed.

TL;DR: In this article, the electrospun gelatin nanofibers were crosslinked with saturated glutaraldehyde (GTA) vapor at room temperature to improve their water resistant ability and thermomechnical performance for potential biomedical applications.

TL;DR: In this paper, a new type of high flux ultrafiltration medium based on an electrospun nanofibrous scaffold (e.g., polyacrylonitrile, PAN) coupled with a thin top layer of hydrophilic, water-resistant, but water-permeable coating was demonstrated.

TL;DR: In this article, a coating on MWNT by PET chains is observed by comparison of micrographs of purified MWNT and MWNT encapsulated by poly(ethylene terephthalate) (PET) chains in the nanocomposites, and this coating is considered as evidence of interfacial interaction between MWNTs and PET chains.

TL;DR: In this article, the glass transition temperature of an ether-based polyurethane shape memory polymer (SMP) has been found to decrease significantly after immersion in water, and the effect of free water is negligible.

TL;DR: In this article, the role of fluid elasticity in the formation of fibers from polymer solution by electrospinning is investigated, and a critical value of elastic stress in the jet, expressed as a function of jet radius and capillary number, is shown to indicate complete suppression of the Rayleigh instability and the transition from beads-on-string to uniform fiber morphology.

TL;DR: In this paper, a systematic and comparative evaluation of the pyrolysis of halogen-free flame-retarded epoxy resins containing phosphine oxide, phosphinate, phosphonate, and phosphate (phosphorus contents around 2.6 wt%) and the fire behavior of their carbon fiber composites is presented.

TL;DR: In this article, the effect of external magnetic field on the elastic modulus of magnetoelasts has been investigated and a phenomenological approach was proposed to describe the dependence of the elastic properties on the magnetic induction.

TL;DR: In this paper, the rate-dependent stress-strain behavior of one polyurea and three representative polyurethane materials is studied by dynamic mechanical analysis, quasi-static compression testing and split Hopkinson pressure bar (SHPB) testing.

TL;DR: In this paper, a new method was developed to construct atomistic molecular models of crosslinked polymers based on commercially important epoxy resin, which employed molecular dynamics/molecular mechanics schemes and assumed close proximity.

TL;DR: In this paper, the authors compared the properties of different blends of poly( l -lactide) (PLLA) with poly(butylene succinate) (pBS) and poly( butylene succine- co - l - lactate)(PBSL) containing the lactate unit of ca. 3 ml% were prepared by melt-mixing and subsequent injection molding, and their mechanical properties, morphology, and crystallization behavior have been compared.

TL;DR: In this paper, the authors demonstrate that melt electrospinning can be a feasible way to produce sub-micron scale polylactic acid (PLA) fibers, which is more environmentally benign than common solution electro-spinning processes, and has a potential to increase the production rate significantly.

TL;DR: Jang et al. as discussed by the authors obtained conductive polypyrrole nanofibers with diameters in the range of about 70-300nm using electrospinning processes.

TL;DR: In this paper, a new series of microcapsules were prepared by in situ polymerization technology with poly(urea-formaldehyde) (PUF) as a shell material and a mixture of epoxy resins (diglycidyl ether of bisphenol A: DGEBPA) and 1-butyl glycidyl methyl ether (BGE) as core materials.

TL;DR: In this paper, the effects of incorporating poly( d -lactic acid) (PDLA) as poly(lactic acids) (PLA) stereocomplex crystallites on the isothermal and non-isothermal crystallization behavior of PLLA from the melt were investigated for a wide PDLA contents from 0.1 to 10.

TL;DR: In this paper, agreed plasticizers for food contact were melt mixed with L-PLA and then, the glass transition, melting, crystallization and mechanical properties of the blends were investigated.

TL;DR: In this article, a series of high molecular weight polyurethanes containing poly(ethylene oxide) (PEO) (1000 and 4600 ǫg/mol) and poly(propylene oxide)(polypropylene oxides) (polyethylene dioxide) (Polypropylene Oxide)(PEO)-Polyethylene Oxide (PPO)-PEO (1900 g/mol), with varying hard segment content were synthesized using a two-step solution polymerization method.

TL;DR: In this article, Li et al. showed that applying coagulation with water right after the collection of fibers is necessary to obtain submicron scale, dry and stable cellulose fibers for both solvent systems.

TL;DR: Aniline has been oxidized with ammonium peroxydisulfate in 0.4 M acetic acid as discussed by the authors, and two subsequent phases of oxidation gave different products, aniline oligomers with mixed ortho-and para-coupled anilines, and polyaniline nanotubes, respectively.

TL;DR: In this article, a single diisocyanate molecule with no chain extenders was used to segmented polyurethanes with hard segments, and the results showed selforganization and formation of well ordered hard segments.

TL;DR: In this paper, multi-wall carbon nanotubes (CNT) were coated with protonated polyaniline (PANI) in situ during the polymerization of aniline.

TL;DR: In this paper, a proton exchange membrane fuel cell (PEMFC) was constructed from N-methyl-2-pyrrolidinone poly(arylene ether) multiblocks.

TL;DR: In this paper, the authors evaluate and compare all major published methods for the experimental determination of the plateau modulus for monodisperse as well as polydisperse polymers with linear architecture.

TL;DR: In this paper, the plasticization of semicrystalline poly( l -lactide) (PLA) with a new plasticizer poly(propylene glycol) (PPG) is described.

TL;DR: In this paper, a nanocomposite of isotactic polypropylene reinforced with cellulose whiskers highly dispersed with surfactant was compared with either bare or grafted aggregated whiskers.

TL;DR: In this paper, the structure and morphology of polyvinylidene fluoride (PVDF)-nanoclay nanocomposites were investigated by wide angle X-ray diffraction (WAXD), polarized light microscopy and transmission electron microscopy (TEM) techniques.

TL;DR: In this article, a novel and simple technique of manufacturing uniaxially aligned electrospun fibers with diameter of sub-micrometers is described compared with typical electrospinning setup, two oppositely placed metallic needles are used, and they are connected to positive and negative voltages, respectively.

TL;DR: In this article, the crystallization behavior of poly( l -lactic acid) was studied in the range of 80 −160 ˚ c. The peak crystallization time (τp) was defined and obtained from the crystallisation isotherm measured with a differential scanning calorimeter (DSC).