AnatomyDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureHealth Care
RheologyPolymersBlood ViscosityErythrocyte DeformabilityHemorheologyViscosityErythrocyte AggregationElasticityMicrofluidicsHematocritShear StrengthGelsSuspensionsHydrogelsElastic ModulusMechanical ProcessesStress, MechanicalErythrocyte CountFactor XIIIaErythrocytesAnemia, Sickle CellBlood Physiological PhenomenaBiocompatible MaterialsPolyethylene GlycolsMicroscopy, Atomic ForceSurface PropertiesPhase TransitionEmulsionsBlood Flow VelocityBiomechanical PhenomenaBiophysicsScattering, RadiationModels, BiologicalBiopolymersTemperature
BlendsDynamicsMeltsProcessingSupramolecular polymerNanocompositesShear RheologyRheologicalAssociative polymersCompositesMorphologyMeltElongational flowDielectricBehaviorPolymeric MaterialsPlasticsConformationGelsDeformationPolymerizationAqueousFixativePhysicsSurfactantsIntrinsicBiopolymersCharacterizationModifierConstitutiveTemperatureChemistryTypicallyCombineChainsComplexOptimizeLinearMaterialsAdditivesNetworksPropertiesScience
Blends7
  • The shear and elongational rheology of linear and pom-pom shaped polystyrene (PS) blends was investigated experimentally and modeled using constitutive models such as the Doi-Edwards and the molecular stress function (MSF) model. (aip.org)
  • Blends of polymers are of high interest and are often used in industrial processes because of the tunability of the desired processing properties as well as for the final application. (aip.org)
  • Due to their industrial relevance, the shear and elongational melt behavior of blends based on many polymers with a linear and branched topology needs to be investigated in the linear [ 1,2 ] and the nonlinear regime [ 3,4 ] and for time-dependent excitations. (aip.org)
  • Takahashi, Y 1998, ' Flow Induced Structure and Rheology of Immiscible Polymer Blends ', sen'i gakkaishi , vol. 54, no. 11. (elsevierpure.com)
  • Rheology of Ring Polymer Melts: From Linear Contaminants to Ring-Linear Blends. (mpg.de)
  • i) Rheology of weakly attractive suspensions (computer simulations), ii) Best packing protocols for amorphous samples, tapping or oscillations (computer simulations), iii) Suspensions rheology of particles with tiny anisotropy (computer simulations), iv) Morphology of drying polymer blends (computer simulations together with Petter Persson). (lu.se)
  • 56, 823-873 (2012)], which is able to predict the linear and nonlinear rheology of bidisperse blends but is prohibitively complex for industrial use. (lu.se)
Dynamics17
  • Architecturally different polymer chains lead to fundamentally different rheological responses and internal dynamics, which can be utilized to rationalize advanced thermoplastic nanocomposites with tunable mechanical behavior. (tubitak.gov.tr)
  • The dynamics of the polymer segment were investigated by performing broadband dielectric spectroscopy (BDS) at a frequency range from 10 -2 Hz to 10 7 Hz. (tubitak.gov.tr)
  • The dynamical slowdown in the composites is temperature dependent and more pronounced at low temperatures (leading to approximately equal to 80 times slower dynamics for nanocomposite with bottlebrush PMMA at 150 °C) due to prolonged relaxation of the interfacial polymer compared to the matrix chains. (tubitak.gov.tr)
  • The Complex Fluids and Theoretical Polymer Physics research group focuses on the structure and dynamics of complex fluids, with polymeric fluids being the overarching theme. (reading.ac.uk)
  • Most of the problems of polymer dynamics arise from the lack of clear definition of polymer entanglement. (reading.ac.uk)
  • We perform large scale molecular dynamics simulations of dense polymeric systems of various topology (linear, stars, rings) and propose microscopic definition of polymer entanglements. (reading.ac.uk)
  • Finally, the extensional rheology and pinching dynamics of ultralong polymer solutions were analyzed using dripping-onto-substrate rheometry, and the relationship between the strength of the coordination bond and the chain extensibility has been investigated. (aps.org)
  • Depolarized dynamic light scattering, broadband dielectric spectroscopy, rheology, and differential scanning calorimetry were employed to systematically study the influence of MW on the mechanism of ionic transport and segmental dynamics in these materials. (osti.gov)
  • Neutron spin-echo spectroscopy is a unique experimental method for the investigation of polymer dynamics. (iucr.org)
  • The current work discusses how virtual experiments within the distorted-wave Born approximation using the BornAgain software can improve GINSES data treatment and aid the understanding of polymer dynamics in the vicinity of the solid surface. (iucr.org)
  • They suggest that, in the nematic phase, the chain dynamics is more cooperative than for a usual linear polymer. (epj.org)
  • The dynamics of the comb-like polymers is discussed in terms of living clusters from which junctions are produced by interactions between side chains. (epj.org)
  • v Liquid crystals - 83.10.Nm Polymer dynamics - 61.12.Ex Neutron scattering techniques (including small-angle scattering) - 83.50. (epj.org)
  • Another objective is to gain insight into the collective dynamics of polymer melts and its change in the presence of nanoparticles. (uni-bayreuth.de)
  • The transient extensional viscosity response of the associative polymer solutions dictates the complex pinch-off dynamics during jetting and spraying, where inertial, viscous and elastic effects moderate capillary break-up of cylindrical fluid elements into droplets. (caltech.edu)
  • In this area we are collaborating with Matyjaszewski's group on exploring the impact of controlled heterogeneity on the structure and dynamics of polymer network systems. (cmu.edu)
  • Molecular dynamics simulation study of nonconcatenated ring polymers in a melt. (mpg.de)
Melts4
  • This paper considers the extension of the parameter-free tube model of Milner and McLeish for stress relaxation in melts of monodisperse star polymers to star polymers whose arms have a continuous molecular weight distribution such as the Flory distribution in the case of star-nylons and star-polyesters. (utwente.nl)
  • Slot, JJM & Steeman, PAM 2005, ' Rheology of Polydisperse Star Polymer Melts: Extension of the parameter-free tube model of Milner and McLeish to arbitrary arm-length polydispersity ', Macromolecular theory and simulations , vol. 14, no. 6, pp. 387-399. (utwente.nl)
  • Comparing equilibration schemes of high-molecular-weight polymer melts with topological indicators. (mpg.de)
  • We propose a pair of simplified tube models for polydisperse melts of entangled linear polymers that combine the success of the double reptation approximation [des Cloizeaux, Europhys. (lu.se)
Processing6
  • This session is coordinated in conjunction with Polymer Processing and Rheology I since there are typically a large number submissions in this area. (aiche.org)
  • This session welcomes contributions in all areas of polymer processing and rheology. (aiche.org)
  • Topics of interest include the relationships between molecular architecture and rheology, structure development during processing, modeling of polymer processing, the use of rheological measurements to optimize processing, and the influence of processing-induced morphology on product properties. (aiche.org)
  • Associative polymer solutions are used extensively in the formulations of functional soft materials like inks, paints, food, nasal sprays, cosmetics, insecticides, fertilizers and bioassays to control the rheology and processing behavior of multi-component complex fluids. (caltech.edu)
  • The polymers exhibited high glass transition temperatures ( T g s) in a broad range, from 80 to 168 °C, and were thermally stable up to 268 °C. Furthermore, dynamic rheology experiments indicated that the polymers were sufficiently stable for melt processing. (lu.se)
  • Industrially sourced polymers are typically polydisperse (comprising a broad distribution of molecular weights), making their rheology more suitable for processing but also more difficult to predict. (lu.se)
Supramolecular polymer1
  • Supramolecular polymer networks are formed by the reversible cross-linking of macromolecules via transient physical interactions, such as hydrogen bonding, p-p stacking and ionic interactions. (reading.ac.uk)
Nanocomposites1
  • In this work, three model poly (methyl methacrylate) (PMMA) polymers with linear, bottlebrush, and star architectures with the same total molar mass were investigated in their neat form, and nanocomposites with well-dispersed silica nanoparticles using rheology and broadband dielectric spectroscopy (BDS). (tubitak.gov.tr)
Shear Rheology1
Rheological3
  • Accordingly, despite the importance of understanding not only shear rheological properties but also the dynamic response of ultralong supramolecular polymers under elongational flow, there have been few studies on them. (aps.org)
  • Rheology laboratory testing of polymers to determine the rheological (flow) properties of materials, gels and pastes, to optimize process and properties. (peersalleyconferences.com)
  • Understanding the rheological properties of polymers through laboratory testing will help to optimize products and process conditions, thereby saving prices and minimizing potential waste. (peersalleyconferences.com)
Associative polymers1
  • There have been several approaches to form supramolecular polymers such as assembly of associative polymers, however, the synthesis of ultralong polymers was only available to a limited extent. (aps.org)
Composites2
  • In the early 1990s, ionic polymer-metal composites (IPMCs) were developed and shown to exhibit electroactive properties far superior to previous EAPs. (wikipedia.org)
  • Within these developments, AM for polymers and polymer matrix composites is an exciting field and has great potential in transformative and translational research in many fields, such as biomedical, aerospace, and even electronics. (mdpi.com)
Morphology1
  • Currently we are focusing on understanding its impact on charge transport in conducting polymers, and on morphology and performance of polymer-based photovoltaics. (cmu.edu)
Melt3
  • The results show that the relationship between shear and elongational melt behavior, i.e., zero-shear viscosity and SHF, can be uncoupled and customized tuned by blending linear and pom-pom shaped polymers and very straightforwardly predicted theoretically. (aip.org)
  • Minimal Surfaces on Unconcatenated Polymer Rings in Melt. (mpg.de)
  • Statistics of polymer rings in the melt: a numerical simulation study. (mpg.de)
Elongational flow1
  • Linear polymers show in elongational flow rather weak strain hardening at strain rates above the inverse of the Rouse relaxation time, but no strain hardening can be observed below it [ 1 ]. (aip.org)
Dielectric2
  • Dielectric EAPs are materials in which actuation is caused by electrostatic forces between two electrodes which squeeze the polymer. (wikipedia.org)
  • Dielectric elastomers are capable of very high strains and are fundamentally a capacitor that changes its capacitance when a voltage is applied by allowing the polymer to compress in thickness and expand in area due to the electric field. (wikipedia.org)
Behavior1
  • Supramolecular polymers which are utilized for viscosity modification, mist control, and drag reduction can give striking changes to the flow behavior of materials with their extremely high molecular weight and extraordinary chain extensibility. (aps.org)
Polymeric Materials1
  • Whilst there has been much success in modeling the linear and nonlinear rheology of monodisperse entangled linear polymers, progress in the constitutive modeling of polymeric materials continues to lag behind the needs of industry. (lu.se)
Plastics1
  • The availability of the building blocks combined with the high stability of the polymers make these materials attractive for use as high-performance plastics and coatings. (lu.se)
Conformation1
Gels2
  • Our compound science specialists perform rheologic property testing on a good vary of polymers like polyolefin, liquids, adhesives, gels and pastes employing a big selection of temperatures and deformation rates (both shear and extensional). (peersalleyconferences.com)
  • AquaStyle™ N polymer is a multifunctional fixative and styling polymer designed primarily for use in styling gels and creams. (kurushar.ru)
Deformation2
  • Polymer physics testing is that the study of however the strain during a material or force applied is said to deformation and flow of the fabric. (peersalleyconferences.com)
  • the global deformation of the polymer chain, and p , the number of statistical units of locally relaxed sub-chains. (epj.org)
Polymerization2
  • for polymer reactions and polymerization, see 82.35. (uni-greifswald.de)
  • Even with high degrees of polymerization N , between 40 and 1000, the polymer chains studied were not entangled. (epj.org)
Aqueous1
  • In this talk, we use the example of a cellulose ether - ethyl-hydroxyethyl-cellulose (EHEC) - and its hydrophobically modified analog (HMEHEC) to illustrate the influence of hydrophobic stickers on the linear and nonlinear rheology of their aqueous solutions. (caltech.edu)
Fixative1
Physics2
  • The Complex Fluids and Theoretical Polymer Physics group became part of Department of Mathematics and Statistics in 2007. (reading.ac.uk)
  • We will employ both experimental and theoretical approaches to understand fundamental issues in a wide variety of applications ranging from bio-microfluidics, (bio)polymer physics, tumor-microenvironment, molecular rheology to cancer treatment. (tudelft.nl)
Surfactants1
  • We are interested in microscopic modelling of the processes taking place at moving contact lines to understand the origin of the dynamic wetting effects in situations involving simple and complex interfaces, e.g. interfaces laden with polymers, particles and surfactants. (reading.ac.uk)
Intrinsic3
  • The polymer has an intrinsic elastic response, which acts as the reference for the measured viscoelasticity of its surrounding medium. (edpsciences.org)
  • Rheology tests unit performed whereas the compound is inside the soften half or whereas the compound has been dissolved during a solvent for intrinsic consistency and relative consistency. (peersalleyconferences.com)
  • 7-14 The ability of narrow polydispersity rrP3ATs synthesized in McCullough laboratory to form well-defined fibrillar structures enabled us to use GISAXS patterns to recognize another particularly important aspect of molecular and nanoscale organization of polythiophene-like polymers: their intrinsic molecular and nanoscale porosity. (cmu.edu)
Biopolymers1
Characterization1
  • Universal scaling and characterization of gelation in associative polymer solutions. (mpg.de)
Modifier1
  • Aqua Style AquaStyle™ SH polymer is a styling polymer and rheology modifier, that provides long-lasting hold under humid conditions. (kurushar.ru)
Constitutive1
  • To date, there are no molecular-based constitutive models that are practically suitable for describing industrially relevant polymers in industrially relevant flows. (lu.se)
Temperature3
  • The elevated temperature affects the rheology of cement slurry. (datadryad.org)
  • For this purpose, two isomers of a comb-like polymetacrylate polymer, of well-defined molecular weights, were synthesized: one displays a nematic phase over a wide range of temperature, the other one has only an isotropic phase. (epj.org)
  • The temperature evolution of primary (alpha) and secondary (beta) relaxations of binary glass formers, linear polymers, and dendrimers is one focus. (uni-bayreuth.de)
Chemistry1
  • He received his BSc (1980) in chemistry from the University of Kerala, Tech. (1983) in polymer science and rubber technology from the Cochin University of Science and Technology, and PhD (1987) in polymer engineering from the Indian Institute of Technology, Kharagpur. (routledge.com)
Typically1
  • Though PolyILs offer the possibility to combine the high conductivity of ILs and the high mechanical strength of polymers, their conductivities are typically much lower than that of the corresponding small molecule ILs. (osti.gov)
Combine1
  • We provide a canonical introduction to dual-junction-functionality associative polymer networks, which combine high and low functionality ( f ) dynamic cross-link junctions to impart load-bearing, dissipation, and self-repairing ability to the network. (aip.org)
Chains3
  • While linear chains form an entangled polymer network, the branched bottlebrush, and star chains show a viscoelastic response with no sign of rubbery entanglement plateau and a weak arm relaxation regime between Rouse and terminal flow, akin to other branched polymers. (tubitak.gov.tr)
  • Using the combination of AFM and Grazing Incidence Small Angle X-ray Scattering (GISAXS) we demonstrated that charge carrier mobilities in rr-P3ATs are dictated by the extent of organization of fibrillar nanostructures formed by π-stacking of polymer chains. (cmu.edu)
  • This aspect of organization is a direct consequence of constraints imposed on intermolecular packing of polymer chains by strong interactions between rigid polymer backbones and their polydispersity. (cmu.edu)
Complex2
  • Modeling solids conveyance in a polymer extruder is difficult because it is a highly complex process. (degruyter.com)
  • In this research, ultralong supramolecular polymers were produced through a coordination complex between metal ions and ligands at both ends of linear building blocks. (aps.org)
Optimize1
  • The size of the unit building block, the coordination number of metal ions, and pH conditions were manipulated to optimize the length of the supramolecular polymers. (aps.org)
Linear1
  • Energy-stable linear schemes for polymer-solvent phase field models. (mpg.de)
Materials2
  • The insertion of rigid aliphatic or aromatic building blocks in polymer structures is an efficient synthetic strategy towards high- T g polymer materials. (lu.se)
  • polymer materials. (lu.se)
Additives1
  • This underlines also the possible application of well-designed branched polymers as additives in recycling. (aip.org)
Networks1
  • structure-transport properties relationships in semiconducting polymers and organic photovoltaics, and nanostructured polymer networks. (cmu.edu)
Properties1
  • In this collection, state-of-the-art reviews and current research results, which focus on the process-structure-properties relationships in polymer AM, will be reported. (mdpi.com)
Science3
  • Sabu Thomas, PhD, is a professor of polymer science and engineering at the School of Chemical Sciences and director of the Centre for Nanoscience and Nanotechnology at Mahatma Gandhi University, Kottayam, Kerala, India. (routledge.com)
  • Journal of Applied Polymer Science. (usda.gov)
  • He completed his master degree at Isfahan University of Technology and his Ph.D. in Polymer Science from the University of Akron (Ohio, USA). (tudelft.nl)