A5079703472- Rheology and Fluid Dynamics Studies
- Polymer crystallization and properties
- Polymer Foaming and Composites
- Structural Analysis of Composite Materials
- Polymer Nanocomposites and Properties
- Elasticity and Material Modeling
- Material Dynamics and Properties
Karlsruhe Institute of Technology
2013-2018
Well-defined, monodisperse homopolymer comb architectures with varied number and length of the branches under linear nonlinear deformation were synthesized examined to determine effect branching on different rheological properties. The correlation properties topology is special interest for determination degree branching. Therefore, well-defined polystyrene-based polymers systematically molecular weight branches, narrow polydispersities, a controlled, but low, (typically 0.1–1 mol % per...
Linear mono- and polydisperse homopolymer melts have been investigated with Fourier transformation rheology (FT rheology) to quantify their nonlinear behavior under oscillatory shear via mechanical higher harmonics, i.e., I3/1(ω,γ0). Master curves of the zero-strain nonlinearity, 3Q0(ω) ≡ limγ0→0 I3/1/γ02, created for these linear melts, applying time–temperature superposition (TTS) principle. The quantity is examined its dependence on molecular weight, weight distribution, monomer. master...
Medium amplitude oscillatory shear (MAOS) in combination with Fourier Transformation of the mechanical stress signal (FT rheology) was utilized to investigate influence molecular weight, weight distribution and monomer on intrinsic nonlinearity 3Q0(ω). Nonlinear master curves 3Q0(ω) have been created, applying time-temperature superposition (TTS) principle. These showed a characteristic shape an increasing slope at small frequencies, maximum 3Q0,max decreasing high frequencies. 3Q0(De)...