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Study of the synthesis parameters of an urea-formaldehyde resin and their impac...

Gonçalves, C.; João Pereira; Paiva, N.; Ferra, J.; Jorge Manuel Santos Silva Martins; Magalhães, F. D.; Barros-Timmons, A.; Luísa Carvalho


Determination of resin and moisture content in melamine-formaldehyde paper usin...

Henriques, A.; Gonçalves, M.; Paiva, N.; Ferra, J.; Martins, J.; Magalhães, F. D.; Luísa Carvalho

This paper describes the use of near infrared spectroscopy as a tool for the determination of moisture and resin content on papers impregnated with melamine-formaldehyde resins for high-pressure laminate production. The papers had different colours and grammages. The near infrared analysis range comprised wavelengths between 12,000 cm(-1) and 4000 cm(-1). Several multivariate calibration procedures and pre-proc...


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