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Virtual poster session

The effect of elastomer viscosity in pp/poe foams produced by core-back injection moulding over impact properties

Wednesday (07.10.2020)
18:52 - 18:55 Room 1
Part of:
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 2 Faeze Barzegar
19:37 Virtual poster session Characterization of porous titanium implants produced by 3D printer technique 2 Dr. Akram Salehi

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

Polypropylene (PP) is a polymer with excellent properties such as easy processability, good stiffness and strength, high thermal stability and excellent chemical resistance, but with low ductility [1] especially when it is foamed [2,3]. In the case of PP compounds, ductile solids become brittle foams even for very low expansion ratios. Thus the objective of this work is to implement different strategies allowing improving the ductility of PP based foams with low expansion ratio avoiding the ductile to brittle transition when the material is foamed.


There are several strategies to improve the impact response of foams. One strategy is to enhance the impact behavior of the PP matrix by producing blends with impact modifiers as elastomers. This is known as elastomer toughening [4]. Poly(Styrene–Ethylene–Butylene–Styrene) (SEBS) [5], Ethylene-Propylene Rubber (EPR) [6] and Ethylene Propylene–Diene Monomer elastomer (EPDM) [7] are adequate elastomer to blend with PP that provide good results. But some of the most promising materials nowadays are ethylene/α-olefin copolymers, and especially, Octene-Ethylene copolymers (POE) [8]. Despite the success in toughening achieving with these blends, it is not well understood the relation between the viscosity of the dispersed phase and the impact behavior of the foamed materials.


The other possible strategy to improve the impact behavior is to produce foams with an improved cellular structure [3]. Core-back injection molding foaming allows obtaining finer cellular structures than low pressure foaming [9] and due to this, it has been the production route used in the research. As far as the authors know, the impact response of PP/POE foams produced by core-back injection molding foaming has not been studied yet.


Solids and foams with different density reductions were produced using PP/POE blends with POE of different viscosity. Impact properties were tested by Instrumented Falling Weight Impact (IFWI). The relation between phases, studied by rheological (figure 1) and calorimetric techniques, was crucial to understand the mechanical behavior of the produced materials.

Ph.D. Santiago Muñoz Pascual
University of Valladolid
Additional Authors:
  • Dr. Cristina Saiz-Arroyo
    Cellmat Technologies S.L.
  • Dr. Anja Vananroye
    KU Leuven
  • Prof. Dr. Paula Moldenaers
    KU Leuven
  • Prof. Dr. Miguel Angel Rodriguez-Perez
    University of Valladolid


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Short Paper Abstract 188 KB Download
Short Paper Figure 1 Figure 1 (Abstract) 145 KB Download