resumo
In our pursuit of developing ecofriendly materials, the effect of the main components of the formulation used for the preparation of polyurethane foams (PUFs) derived from unrefined crude glycerol (CG) has been systematically studied. A series of PUFs has been prepared using formulations with judicious variations of the percentage of each component. The physical properties of the resulting PUFs were measured and the data collected were statically treated using a four-way functional ANOVA method. From the ANOVA results, the paramount importance that the blowing agent and the surfactant have on the regulation of density and thermal conductivity of PUFs was recognized. Regarding the mechanical properties, the isocyanate content presented a dominant influence on the increase of Young's modulus, toughness and compressive stress of PUFs. (C) 2016 Elsevier Ltd. All rights reserved.
palavras-chave
ISOCYANATE INDEX; BLOWING AGENTS; LIQUEFACTION
categoria
Materials Science; Polymer Science
autores
Gama, NV; Silva, R; Costa, M; Barros-Timmons, A; Ferreira, A
nossos autores
Ana Margarida Madeira Viegas de Barros Timmons
Professor associado
Artur Jorge Faria Ferreira
Professor Coordenador
Marisa Célia da Silva Resende da Costa
Bolseiro de pós-Doutoramento
Nuno Vasco da Costa Gama Batista de Melo
Investigador JúniorGrupos
G1 - Materiais Porosos e Nanossistemas
G3 - Materiais Eletroquímicos, Interfaces e Revestimentos
G4 - Materiais Renováveis e Economia Circular
agradecimentos
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. Thermal Analysis Laboratory was funded by FEDER Funds through Programa Operacional Factores de Competitividade - COMPETE and by National Funds through FCT under the project REEQ/515/CTM/2005. Marco Costa was partially supported by Portuguese funds through the CIDMA - Center for Research and Development in Mathematics and Applications, and the Portuguese Foundation for Science and Technology (