Introducing Flexibility in Urea-Formaldehyde Resins: Copolymerization with Polyetheramines

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Ana Antunes (Author) Other; Maria Rêgo (Author) Other; Nádia Paiva (Author) Other; João Ferra (Author) Other; Jorge Martins (Author) Other; Luísa Carvalho (Author) FEUP; Ana Barros Timmons (Author) Other; Fernão D. Magalhães (Author) FEUP

Journal

Title: Journal of Polymer Science, Part A: Polymer Chemistry

Vol. 56 No. 16

Pages: 1834-1843

ISSN: 0887-624X

Publisher: John Wiley & Sons

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 7 Citations

INSPEC

Associated Projects

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

2GAR - 2GAR - Resinas Amino de segunda Geração

Other information

Authenticus ID: P-00P-HF2

DOI: 10.1002/pola.29064

Abstract (EN): Adhesives obtained by copolymerizing urea, formaldehyde, and difunctional polyetheramine with different molecular weights (230, 600, 900, and 2000 gmol(-1)) are presented as a more resilient alternative to conventional urea-formaldehyde resins. Urea and polyetheramine contents were varied and the resulting resins characterized by FTIR, C-13-NMR, and TGA. These resins were used for production of agglomerated cork panels, an application that demands that the binder system is flexible. Polyetheramine with molecular weight 900 g mol(-1) yielded the most promising agglomerated cork panel, with remarkable flexibility, good tensile strength, and with the E1 formaldehyde content specification for wood-based panels used in construction, according to European Standard EN 12460-5. These new thermoset adhesives have demonstrated to be capable of being used in systems where conventional formaldehyde-based resins do not perform well due to inherent high rigidity. (C) 2018 Wiley Periodicals, Inc.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10