Characterization of the Low Molar Ratio Urea–Formaldehyde Resin with 13C NMR and ESI–MS: Negative Effects of the Post-Added Urea on the Urea–Formaldehyde Polymers

The structural changes during three-step synthesis of low-molar ratio urea–formaldehyde (UF) resin were tracked by quantitative 13C nuclear magnetic resonance (13C NMR) analysis and electrospray ionization-mass spectrometry (ESI–MS). Condensations that produced polymers were foun...

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Main Authors: Hui Wang, Ming Cao, Taohong Li, Long Yang, Zhigang Duan, Xiaojian Zhou, Guanben Du
Formato: Artigo
Idioma:Inglês
Publicado em: MDPI AG 2018-05-01
Colecção:Polymers
Assuntos:
urea–formaldehyde resin
post-added urea
mole ratio
debranching effect
Acesso em linha:http://www.mdpi.com/2073-4360/10/6/602
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