Effect of spent sulfite liquor on urea-formaldehyde resin performance

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Ana Maria Ferreira (Author) FEUP; João Pereira (Author) Other; Margarida Almeida (Author) FEUP; João Ferra (Author) Other; Nádia Paiva (Author) Other; Jorge Martins (Author) FEUP; Luísa H. Carvalho (Author) FEUP; Fernão D. Magalhães (Author) FEUP

Journal

Title: Journal of Applied Polymer Science

Vol. 136 No. 17

Pages: 1-9

ISSN: 0021-8995

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 5 Citations

INSPEC

Associated Projects

2GAR - 2GAR - Resinas Amino de segunda Geração

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

Other information

Authenticus ID: P-00Q-29T

DOI: 10.1002/app.47389

Abstract (EN): Combination of urea-formaldehyde (UF) resins with technical lignins has been often reported in the literature. However, the actual implications of this approach have not been effectively addressed yet. In this work, unmodified thick spent sulfite liquor (TSSL) and hydroxymethylated TSSL (TSSLH) were incorporated in a standard UF resin in different amounts (10 and 20%) and at different stages. When 10% of TSSLH was incorporated after the synthesis, the produced particleboards performed equivalently to when 90% of UF resin was used. In all other cases tested, combining UF resin with TSSL/TSSLH actually led to lower internal bond strengths. The results evidence that addition of TSSL or TSSLH does not have a beneficial effect on UF bonding performance. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47389.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9