GreenCaps: towards solid curing agents for sustainable polyurethane foams

Sustainable Chemical Processes - Tập 2 - Trang 1-6 - 2014
Rosaria Ciriminna1, Ana C Marques2, João C Bordado2, Aster de Schrijver3, Mario Pagliaro1
1Istituto per lo Studio dei Materiali Nanostrutturati, CNR, Palermo, Italy
2Centro de Recursos Naturais e Ambiente (CERENA), Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
3Greenseal Chemicals NV, Port of Ghent, Ghent, Belgium

Tóm tắt

Testing and further investigation of organosilica microspheres functionalized with aqueous glycerol as solid curing agents for polyurethane (PU) foams confirms the potential of these materials to cure better and greener PU foams. The developed microspheres were found to be stable in the foam precursor mixture, allowing handling and mixing of the foam cans, and were shown to provide a slight improvement of the curing speed. The foams obtained from the froth containing the microspheres were found to maintain the level of quality of reference foam samples. Termed “GreenCaps”, these microspheres will subsequently be tested in pre-commercial applications.

Tài liệu tham khảo

Sonnenschein MF, Koonce W: Polyurethanes. Encyclopedia of Polymer Science and Technology. 2011, Wiley, New York Consultants IAL: Global Overview of the Spray Polyurethane Foam (SPF) & One Component Foam (OCF). 2014, IAL Consultants, London, 4 Ashida K: Polyurethane and Related Foams: Chemistry and Technology. 2007, CRC Press, Boca Raton, FL Meckel-Jonas C: (Henkel), Polyurethane Laminating Adhesives and Food Safety: A Smart Alliance. 2009, TAPPI Flexible Packaging Symposium India, New Delhi US Environmental Protection Agency: Methylene Diphenyl Diisocyanate (MDI) and Related Compounds Action Plan Summary; 2013. Available at the URL: , [http://www.epa.gov/oppt/existingchemicals/pubs/actionplans/mdi.html] Ciriminna R, Loddo V, Alterman A, de Schrijver A, Pagliaro M: Enhanced one component spray polyurethane foams via sol-gel microspheres doped with aqueous glycerol. ACS Sustainable Chem Engineer. 2014, 2: 506-511. 10.1021/sc400431x. Ciriminna R, Della Pina C, Rossi M, Pagliaro M: Understanding the Glycerol Market. Eur J Lipid Sci Technol. 2014, 116: 1432-1439. 10.1002/ejlt.201400229. Tadros TF: Applied Surfactants: Principles and Applications. 2005, Wiley-VCH, Weinheim Pagliaro M, Sciortino M, Ciriminna R, Alonzo G, De Schrijver A: From molecules to systems: sol-gel microencapsulation in silica-based materials. Chem Rev. 2011, 111: 765-789. 10.1021/cr100161x. Pagliaro M, Sciortino M, Ciriminna R, Alonzo G, De Schrijver A: Chem Rev. 2011, 111: 765-789. 10.1021/cr100161x.