Linear viscoelasticity, extensional viscosity, and oxygen permeability of nanocomposites based on propylene copolymer and organoclay
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.45840
Abstract: Random propylene-terpolymer (PEBC)/organophilic montmorillonite nanocomposites were prepared by melt mixing, using PEBC modified with maleic anhydride (PEBCg) as compatibilizer. Clay concentrations up to 8 wt %, compatibilizer/clay ratios up to 3:1 and concentrations of anhydride… read more here.
Keywords: oxygen permeability; linear viscoelasticity; viscoelasticity extensional; clay ... See more keywords
Modeling and simulation of anisotropic linear viscoelasticity
Sign Up to like & getrecommendations! Published in 2020 at "Mechanics of Time-Dependent Materials"
DOI: 10.1007/s11043-020-09468-8
Abstract: A constitutive material law for linear viscoelasticity in the time domain is presented. It does not only allow for anisotropic elastic behavior but also for anisotropic (i.e. direction dependent) relaxation response. Under the assumption of thermo–rheological… read more here.
Keywords: linear viscoelasticity; anisotropic linear; viscoelasticity; simulation anisotropic ... See more keywords
Linear viscoelasticity of complex coacervates.
Sign Up to like & getrecommendations! Published in 2017 at "Advances in colloid and interface science"
DOI: 10.1016/j.cis.2016.08.010
Abstract: Rheology is a powerful method for material characterization that can provide detailed information about the self-assembly, structure, and intermolecular interactions present in a material. Here, we review the use of linear viscoelastic measurements for the… read more here.
Keywords: self assembly; complex coacervates; rheology; material dynamics ... See more keywords
On necessary precautions when measuring solid polymer linear viscoelasticity with dynamic analysis in torsion
Sign Up to like & getrecommendations! Published in 2017 at "Polymer Testing"
DOI: 10.1016/j.polymertesting.2017.08.025
Abstract: Abstract Solid polymer linear viscoelasticity in shear is often characterized by applying torsion and using the Saint-Venant solution when rectangular prismatic specimens are considered. It is shown that experimental dynamic torsion tests can show a… read more here.
Keywords: torsion; polymer; linear viscoelasticity; solid polymer ... See more keywords
On transient waves in linear viscoelasticity
Sign Up to like & getrecommendations! Published in 2017 at "Wave Motion"
DOI: 10.1016/j.wavemoti.2017.07.008
Abstract: Abstract The aim of this paper is to present a comprehensive review of method of the wave-front expansion, also known in the literature as the Buchen–Mainardi algorithm. In particular, many applications of this technique to… read more here.
Keywords: waves linear; linear viscoelasticity; viscoelasticity; transient waves ... See more keywords
Linear Viscoelasticity and Cation Conduction in Polyurethane Sulfonate Ionomers with Ions in the Soft Segment-Multiphase Systems
Sign Up to like & getrecommendations! Published in 2018 at "Macromolecules"
DOI: 10.1021/acs.macromol.7b02509
Abstract: PEO-based polyurethane sulfonate ionomers with various PEO chain lengths and sodium counterions were synthesized and characterized by both linear viscoelasticity (LVE) and dielectric relaxation spectroscopy (DRS). Since p-phenylene diisocyanate is a small hard segment, the… read more here.
Keywords: relaxation; sulfonate ionomers; segment; linear viscoelasticity ... See more keywords
Linear Viscoelasticity of Carbosilane Dendrimer Melts
Sign Up to like & getrecommendations! Published in 2019 at "Macromolecules"
DOI: 10.1021/acs.macromol.8b02250
Abstract: We report on shear-stress relaxation of melts of poly(butylcarbosilane) dendrimers. The system is studied by means of the molecular dynamics simulations with atomistic resolution. The key investigated quantities are the dynamical shear-stress relaxation modulus and,… read more here.
Keywords: carbosilane dendrimer; linear viscoelasticity; dendrimer melts; relaxation ... See more keywords
Design, operation, and validation of a microrheology instrument for high-pressure linear viscoelasticity measurements
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Rheology"
DOI: 10.1122/1.5126682
Abstract: We report a passive microrheology experiment to measure the linear viscoelasticity of complex fluids at pressures of up to 200 MPa. The apparatus incorporates a sealed steel alloy sample chamber with dual sapphire windows into a… read more here.
Keywords: microrheology; linear viscoelasticity; high pressure; modulus ... See more keywords
Analysis of linear viscoelasticity of aging soft glasses
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Rheology"
DOI: 10.1122/8.0000099
Abstract: Aging soft glassy materials do not follow time-translational invariance and violate the principles of linear viscoelasticity, such as the relation between the dynamic moduli in the frequency domain and the stress relaxation modulus in the… read more here.
Keywords: relaxation; analysis; time; aging soft ... See more keywords
On linear viscoelasticity within general fractional derivatives without singular kernel
Sign Up to like & getrecommendations! Published in 2017 at "Thermal Science"
DOI: 10.2298/tsci170308197g
Abstract: The Riemann-Liouville and Caputo-Liouville fractional derivatives without singular kernel are proposed as mathematical tools to describe the mathematical models in line viscoelasticity in the present article. The fractional mechanical models containing the Maxwell and Kelvin-Voigt… read more here.
Keywords: without singular; singular kernel; linear viscoelasticity; fractional derivatives ... See more keywords
Thermodynamic Restrictions in Linear Viscoelasticity
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15082706
Abstract: The thermodynamic consistency of linear viscoelastic models is investigated. First, the classical Boltzmann law of stress–strain is considered. The kernel (Boltzmann function) is shown to be consistent only if the half-range sine transform is negative… read more here.
Keywords: linear viscoelasticity; law; restrictions linear; strain ... See more keywords