THESIS 1 : INSA LYON-IMP VILLEURBANNE

Context  :

The approach of this thesis offers new enlightenment for understanding and tailoring the interfaces/interphases and structure in micro-/nanolayered polymer support films towards the target properties. Indeed, this thesis aims at answering the following questions associated with some scientific hypotheses:

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1) How do the filler natures (e.g. their aspect ratios) affect the rheological behavior and the percolation properties in each filled micro/nanolayer? What is the dominant flow kinematic to obtain a continuous network of the 3D fillers?

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2) How does one obtain and control the expected homogeneous properties with improvement of the layer continuity?

3) How does one predict the flow properties and layer homogeneity with numerical simulations taking into account the complex rheological behavior of the filled materials, the design of the multiplier elements and the processing parameters?

4) How does the geometrical/spatial confinement affect the polymer dynamics with conductive and/or magnetic fillers)?

5) Which crystallization properties (twist, 2D, 1D, etc.) of the obtained nanostructured materials are to be expected in the presence of nanofillers? What are the most influential parameters on electromagnetic properties?

6) What’s the effect of the nano-confinement on the dielectric/magnetic properties and the 2-3D conductivity?

7) Is it possible to predict the EMR properties based on the nature of the fillers and on the layer architectures?

8) How about the capacity to print electronic circuitry on a 2D substrate prior to converting this into 3D device?

9) What are the suitable mechanical properties of the materials and the temperature/pressure of the process for overmoldings and thermoforming steps during an IME process?