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Novel Lignin-Functionalized Waterborne Epoxy Composite Coatings with Excellent Anti-Aging, UV Resistance, and Interfacial Anti-Corrosion Performance.
Feng, Pingxian; Wang, Huan; Gan, Shiyu; Liao, Bokai; Niu, Li.
Afiliación
  • Feng P; School of Chemistry and Chemical Engineering, Guangzhou Key Laboratory of Sensing Materials & Devices, Joint Institute of Guangzhou University and Institute of Corrosion Science and Technology, Guangzhou University, Guangzhou, 510006, P. R. China.
  • Wang H; School of Chemistry and Chemical Engineering, Guangzhou Key Laboratory of Sensing Materials & Devices, Joint Institute of Guangzhou University and Institute of Corrosion Science and Technology, Guangzhou University, Guangzhou, 510006, P. R. China.
  • Gan S; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang, 515200, P. R. China.
  • Liao B; State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China.
  • Niu L; School of Chemistry and Chemical Engineering, Guangzhou Key Laboratory of Sensing Materials & Devices, Joint Institute of Guangzhou University and Institute of Corrosion Science and Technology, Guangzhou University, Guangzhou, 510006, P. R. China.
Small ; 20(28): e2312085, 2024 Jul.
Article en En | MEDLINE | ID: mdl-38342594
ABSTRACT
Developing high-performance lignin anti-corrosive waterborne epoxy (WEP) coatings is conducive to the advancement of environmentally friendly coatings and the value-added utilization of lignin. In this work, a functionalized biomass waterborne epoxy composite coating is prepared using quaternized sodium lignosulfonate (QLS) as a functional nanofiller for mild carbon steel protection. The results showed that QLS has excellent dispersion and interface compatibility within WEP, and its abundant phenolic hydroxyl, sulfonate, quaternary ammonium groups, and nanoparticle structure endowed the coating with excellent corrosion inhibition and superior barrier properties. The corrosion inhibition efficiency of 100 mg L-1 QLS in carbon steel immersed in a 3.5 wt% NaCl solution reached 95.76%. Furthermore, the coating maintained an impedance modulus of 2.29 × 106 Ω cm2 (|Z|0.01 Hz) after being immersed for 51 days in the high-salt system. In addition, QLS imparted UV-blocking properties and thermal-oxygen aging resistance to the coating, as evidenced by a |Z|0.01 Hz of 1.04 × 107 Ω cm2 after seven days of UV aging while still maintaining a similar magnitude as before aging. The green lignin/WEP functional coatings effectively withstand the challenging outdoor environment characterized by high salt concentration and intense UV radiation, thereby demonstrating promising prospects for application in metal protection.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania