Features

Applications and Theories

Molecular Weight Distribution Analysis (MWD)

  • Load and inspect molecular weight distributions.

  • Discretize molecular weight distributions for use in rheological theories.

  • Fit Generalized Exponential (GEX) and LogNormal distributions.

Time-Temperature Superposition (TTS)

  • Manual and automatic time-temperature superposition shifts.

  • Williams-Landel-Ferry (WLF) shift theory.

  • Analysis of shift factors in the TTS Factors application.

  • WLF and Arrhenius descriptions for shift-factor data.

Linear Viscoelastic data analysis (LVE)

  • Maxwell modes and Baumgaertel-Winter relaxation-spectrum fitting.

  • ReSpect extraction of discrete and continuous relaxation spectra.

  • Likhtman-McLeish, Rouse, dynamic-tube dilution for stars, and sticky reptation theories.

  • Carreau-Yasuda steady-shear viscosity model.

  • BoB, Rolie-Double-Poly, LP2R, and CFSM+Rouse theories for linear viscoelasticity of entangled polymers.

Start-up of shear and extensional flow (NLVE)

  • Rolie-Poly, Upper-Convected Maxwell, Giesekus, and Pom-Pom models.

  • Rolie-Double-Poly equation for binary blends.

  • BoB predictions for branch-on-branch polymers.

  • PETS for entangled telechelic star polymers.

  • SCCR/GLaMM theory for entangled linear polymers.

Stress relaxation experiments (Gt)

  • Maxwell modes and Baumgaertel-Winter relaxation-spectrum fitting.

  • ReSpect extraction of discrete and continuous relaxation spectra.

  • Rouse and dynamic-tube dilution theories for time-domain relaxation data.

Creep experiments (Creep)

  • Fit creep and recovery data with retardation modes.

Neutron scattering experiments (SANS)

  • Debye theory for small-angle neutron scattering from ideal polymer chains.

Flow-induced crystallisation (Crystal)

  • GO-polySTRAND and Smooth-polySTRAND theories for flow-induced nucleation.

  • Dedicated views for crystallisation and nucleation data.

Large amplitude oscillatory shear (LAOS)

  • Import and analyse LAOS data.

  • Raw-data, Fourier-transform, harmonic, and Pipkin-space views.

  • Rolie-Poly, UCM, Giesekus, and Pom-Pom theories for LAOS workflows.

Monte Carlo polymerisation (React)

  • LDPE batch and CSTR reactions based on Tobita models.

  • Multiple-metallocene and diene CSTR reaction models.

  • Combine React theories.

  • Create polymer configurations for BoB rheology.

Dielectric Spectroscopy (Dielectric)

  • Debye, Havriliak-Negami, and Kohlrausch-Williams-Watts (KWW) relaxation modes.

  • Standard frequency-domain and Cole-Cole views.

Universal Viewer

  • Open and inspect supported RepTate data files without selecting a specialised application.

Graphical User Interface

  • Project save and restore workflow.

  • Export figures and save theory predictions to RepTate-compatible files.

  • Flexible plot symbols, colours, line styles, legends, and axis settings.

  • Multiple plot views and interactive zoom and pan controls.

  • Inspection of experimental, theory, and tool data tables.

  • Import data from supported text formats and Excel files.

  • Common analysis tools: Bounds, Evaluate Expression, Find Peaks, Gradient, Integral, Interpolate/Extrapolate, Smooth, Power Law, Resample Data, and Materials Database.

  • Theory fitting with selectable error metrics, including MSE, MAE, MSRE, and MRAE.

  • Stop long calculations and fits from the GUI.

  • Unit-aware data columns, axis labels, file parameters, application parameters, and selected theory parameters.