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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Towards urea and glycerol utilization as ``building blocks{''} for polyurethane production: A detailed study about reactivity and structure for environmentally friendly polymer

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Giroto, Amanda S. [1] ; do Valle, Stella F. [1, 2] ; Ribeiro, Tatiana [3, 4] ; Ribeiro, Caue [1, 3] ; Mattoso, Luiz H. C. [1]
Total Authors: 5
[1] EMBRAPA Instrumentacao, Rua XV Novembro 1452, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Chem Dept, Washington Luiz Rd Km 235, BR-13565905 Sao Carlos, SP - Brazil
[3] Forschungszentrum Julich, Inst Energy & Climate Res IEK 14 Electrochem Proc, D-52425 Julich - Germany
[4] Univ Fed Sao Carlos, Dept Nat Sci Math & Educ, Anhanguera, Km 174, BR-13604900 Sao Carlos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Web of Science Citations: 0

Polyurethanes have been widely used in a wide variety of applications that benefit our everyday life. However, in the present scenario, it is urgent to find solutions towards more sustainable polymeric systems that can be more biodegradable and less dependent on non-renewable feedstocks. The present work proposes a thorough structural investigation of polyurethane materials based on the use of two small eco-friendly reactants: glycerol and urea. The results with glycerol demonstrated a preferential reactivity of MDI with primary alcohol terminals, except when the diisocyanate was in excess, which resulted in crosslinking formation (shown in C-13 NMR). Urea-based materials displayed superior thermal stability, associated with higher crystallinity and intermolecular forces, as observed in TGA, XRD, and FTIR. Overall, the structural characteristics support the potential of biodegradability of the studied polyurethanes and polyureas. (AU)

FAPESP's process: 18/10104-1 - Nanocomposites preparation from urea modified with glycerol for optimization of process of controlled release of nutrients
Grantee:Amanda Soares Giroto
Support type: Scholarships in Brazil - Post-Doctorate