Scientific Program

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Virtual poster session

Synthesis of new non-isocyanate polyurethane foams based on cyclic triscarbonates and diamines

Wednesday (07.10.2020)
19:13 - 19:16 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


Polyurethane (PU) foams are the most extensively used and well-known cellular polymers, representing more than half of the global market of foams, with a sustained growth over the years [1]. The chemistry involved in the synthesis of the different PU foams is mainly centred on the isocyanate reactions, since isocyanate and polyol generate urethane groups which form the polymeric structure, at the same time as the foaming reaction occurs in which a gas is generated due to the addition of physical or chemical blowing agents [2]. Thus, the isocyanates are indispensable raw materials to build the complex structure of a PU polymer. However, the most important commercial method for isocyanate production based on the phosgenation of amines presents a huge health problem, since the exposure to the phosgene used that is a highly toxic gas can cause severe respiratory effects, ocular irritation and burns to the eye and to the skin, and eventually to death [3]. Moreover, the isocyanates monomers thus obtained also are harmful [3, 4]. Consequently, today many investigations are focused on studying non-isocyanate PU (NIPU) foams without requiring either phosgene or isocyanates in order to avoid special safety, health, and handling precautions and to meet the demands of green chemistry.

 

In this work, we study the synthesis of new NIPU foams from the reaction between cyclic carbonates and diamines. Basically, trimethylolpropane tris-carbonate is cured with hexamethylene diamine in presence of a physical blowing agent. The foaming parameters are evaluated to optimize the production of the NIPU foams. The density and cellular structure are characterized for the resulting NIPU foams.

 

[1] Polymer Foams Market Expected to Consume 25.3 Million Tonnes by 2019. www.smithersrapra.com/news/2014/may/polymer-foam-market-to-consume-25-3-million-tonnes, 2014.

[2] M. Szycher, Szycher's Handbook of Polyurethanes, Second ed., CRC Press Boca Raton, Florida, USA, 2012.

[3] G. Rokicki, P.G. Parzuchowski, M. Mazurek, Non-isocyanate polyurethanes: synthesis, properties, and applications, Polymers for Advanced Technologies, 26 (2015) 707-761.

[4] D.C. Allport, D.S. Gilbert, S.M. Outterside, MDI and TDI: A Safety, Health and the Environment: A Source Book and Practical Guide., John Wiley & Sons Ltd., Chichester, 2003.

Speaker:
Ph.D. Mercedes Santiago-Calvo
University of Valladolid
Additional Authors:
  • Prof. Dr. Fernando Villafañe
    University of Valladolid
  • Prof. Dr. Miguel Ángel Rodríguez-Pérez
    University of Valladolid