Scientific Program

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Virtual poster session

Multiscale modeling of biopolymer aerogels

Wednesday (07.10.2020)
19:01 - 19:04 Room 1
Part of:
Line-Up:
18:40 Virtual poster session Development of CFRP - hybrid foam composites for improved light-weight design of electric vehicles 1 Joachim Baumeister
18:43 Virtual poster session Study of the thermal conductivity of powdered microcellular polymers based on PMMA 1 Ph.D. Ismael Sánchez
18:46 Virtual poster session Manufacturing of functional aluminium matrix syntactic foams 1 Alexandra Kemény
18:49 Virtual poster session Manufacturing and comparison of AlSi12 matrix unimodal and bimodal syntactic metal foams 1 Borbála Leveles
18:52 Virtual poster session The effect of elastomer viscosity in pp/poe foams produced by core-back injection moulding over impact properties 1 Ph.D. Santiago Muñoz Pascual
18:55 Virtual poster session Modelling of the mechanisms of heat transfer in glass foams at different temperatures 1 Paula Cimavilla-Román
18:58 Virtual poster session Thermal conductivity of polyisocyanurate foams (PIR) produced using hydrofluoroolefins (HFOs) as blowing agents 1 Ph.D. Patricia Torres
19:01 Virtual poster session Multiscale modeling of biopolymer aerogels 1 Dr.-Ing. Ameya Rege
19:04 Virtual poster session On the way to mass production of unit-cell based auxetic materials 1 Angela Schwarz
19:07 Virtual poster session Wavy knits – enabling the production of auxetic materials 1 Angela Schwarz
19:10 Virtual poster session Influence of Sample Size on Dynamic Compression of Metal Syntactic Foams 1 Nima Movahedi
19:13 Virtual poster session Synthesis of new non-isocyanate polyurethane foams based on cyclic triscarbonates and diamines 1 Ph.D. Mercedes Santiago-Calvo
19:16 Virtual poster session Formation of monodisperse surfactant foams 1 Prof. Dr. Rumen Krastev
19:19 Virtual poster session Analysis of a AlMg2.5 matrix syntactic foam produced via thixoinfiltration of loosely packed and micro structured recycled balloons 1 João Paulo Paschoal
19:22 Virtual poster session In-situ observation of combustion foaming process for synthesizing porous Al3Ti by X-ray radioscopy 1 Takamasa Inukai
19:25 Virtual poster session Characterization of 3D printed PHBV+BG scaffolds for bone regeneration 1 Prof. Dr. Elida B. Hermida
19:28 Virtual poster session Rheology of a hydrogel-ink, printing fidelity and elastic behavior of 3D-printed scaffolds 1 Prof. Dr. Elida B. Hermida
19:31 Virtual poster session Keratinocytes hacat proliferation on 3D-printed chitosan-collagen scaffolds 1 Prof. Dr. Elida B. Hermida
19:34 Virtual poster session The microhardness and microstructure studies on the sintered open-cell nickel foam 0 Faeze Barzegar
19:37 Virtual poster session Characterization of porous titanium implants produced by 3D printer technique 0 Dr. Akram Salehi
19:40 Virtual poster session Adapting polymer derived ceramic membranes for emulsification process 1 Natália Cristina Fontão
19:43 Virtual poster session Poster discussion in video chat rooms 0
Session Chair


Session V.1: Session 1
Belongs to:
General Topic V: Virtual poster session


Biopolymer aerogels are finding applications in a very wide spectra, ranging from biomedicines to aircrafts. The morphology of these aerogels is characterized by 3-dimensional interconnected fibrils that give their microstructure a cellular appearance. A predictive micro-mechanical model [1] for such aerogels along with its validation with experimental data of aerogels from polysaccharides like cellulose, pectin, k-carrageenan, and alginate will be presented. The material model is based on the kinematics of the cell wall fibrils that are modeled as Euler-Bernoulli beams. The measures of the fibril sizes are obtained from the pore-size distribution analysis which are realized from nitrogen desorption isotherms by means of the Barrett-Joyner-Halenda model. Different failure criteria are shown to influence the pore collapse and fibril failure through the network.

 

All material parameters are either obtained from analyses of the experimental characterizations or from the quantum mechanical simulations based on the density functional theory (DFT). The use of DFT to compute parameters such as the bulk and Young’s modulus of the cell wall fibrils will be discussed. As an example, computation of the elasticity matrix of cellulose from the stresses as obtained from a plane-wave basis set DFT method will be presented.

 

In the last segment, a brief overview on the application of neural networks to material modeling of such aerogels will be introduced.

 

References

 

1. Rege A, Preibisch I, Schestakow M, Ganesan K, Gurikov P, Milow B, Smirnova I, Itskov M. Correlating Synthesis Parameters to Morphological Entities: Predictive Modeling of Biopolymer Aerogels. Materials. 2018;11(9):1670.

Speaker:
Dr.-Ing. Ameya Rege
German Aerospace Center (DLR)
Additional Authors:
  • Dr. Sachin P. Nanavati
    Cardiff University
  • Shivangi Aney
    German Aerospace Center (DLR)
  • Prof. Dr. Barbara Milow
    German Aerospace Center (DLR)