Structure and electrochemical properties of PMMA-silica hybrid coatings modified with cerium and lithium ions.

• Grant number: 15/11907-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: September 01, 2015
• End date: October 31, 2019
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Peter Hammer
• Grantee: Andressa Trentin
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated scholarship(s): 17/14061-2 - Influence of Ce(iii) and Ce(IV) ions on the structural and electrochemical characteristics of PMMA-silica hybrid coatings, BE.EP.DR

Abstract

Organic-inorganic hybrid coatings modified with cerium ions will be prepared by the sol-gel process in order to perform a structural and electrochemical investigation. The effect of different concentrations of Ce(III) and Ce(IV) ions in the inorganic phase will be studied focusing on the following aspects: formation and structure of the hybrid network, anti-corrosion properties and the "self-healing" effect. The organic-inorganic hybrid coatings, based on methyl polymethacrylate (PMMA) covalently bonded with the inorganic silica phase, containing different concentrations of cerium, will be deposited on carbon steel and aluminum alloy substrates by dip coating. The structural characterization will be carried out by nuclear magnetic resonance spectroscopy (NMR) 29Si and 13C, X-ray photoelectron spectroscopy (XPS), extended X-ray absorption fine structure (EXAFS), small angle X-ray scattering (SAXS), combined with morphological analysis by atomic force microscopy (AFM), scanning electron microscopy (FEG-SEM) and optical microscopy. For analysis of thermal properties thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) will be used. The corrosion protection efficiency of the coatings and the "self-healing" effect of artificially damaged samples will be investigated before and after immersion in saline and saline/acid medium by electrochemical impedance spectroscopy (EIS), polarization curves and the scanning vibrating electrode technique (SVET), the latter performed during the internship abroad.

Scientific publications

(9)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

TRENTIN, ANDRESSA; GASPARINI, ANDRESSA DE L.; FARIA, FLAVIO A.; HARB, V, SAMARAH; DOS SANTOS, FABIO C.; PULCINELLI, SANDRA H.; SANTILLI, V, CELSO; HAMMER, PETER. Barrier properties of high performance PMMA-silica anticorrosion coatings. Progress in Organic Coatings, v. 138, JAN 2020. (15/11907-2, 15/09342-7, 14/12182-9)

TRENTIN, ANDRESSA; HARB, SAMARAH V.; UVIDA, MAYARA C.; PULCINELLI, SANDRA H.; SANTILLI, CELSO V.; MARCOEN, KRISTOF; PLETINCX, SVEN; TERRYN, HERMAN; HAUFFMAN, TOM; HAMMER, PETER. Dual Role of Lithium on the Structure and Self-Healing Ability of PMMA-Silica Coatings on AA7075 Alloy. ACS APPLIED MATERIALS & INTERFACES, v. 11, n. 43, p. 40629-40641, OCT 30 2019. (15/11907-2, 17/14061-2, 15/09342-7)

HARB, V, SAMARAH; BASSOUS, NICOLE J.; DE SOUZA, THIAGO A. C.; TRENTIN, ANDRESSA; PULCINELLI, SANDRA H.; SANTILLI, V, CELSO; WEBSTER, THOMAS J.; LOBO, ANDERSON O.; HAMMER, PETER. Hydroxyapatite and beta-TCP modified PMMA-TiO2 and PMMA-ZrO2 coatings for bioactive corrosion protection of Ti6Al4V implants. Materials Science & Engineering C-Materials for Biological Applications, v. 116, NOV 2020. (15/11907-2, 17/14061-2, 17/02899-1)

HARB, V, SAMARAH; TRENTIN, ANDRESSA; UVIDA, MAYARA C.; MAGNANI, MARINA; PULCINELLI, SANDRA H.; SANTILLI, V, CELSO; HAMMER, PETER. A comparative study on PMMA-TiO2 and PMMA-ZrO2 protective coatings. Progress in Organic Coatings, v. 140, MAR 2020. (15/11907-2, 15/09342-7)

HARB, SAMARAH VARGAS; UVIDA, MAYARA CARLA; TRENTIN, ANDRESSA; LOBO, ANDERSON OLIVEIRA; WEBSTER, THOMAS JAY; PULCINELLI, SANDRA HELENA; SANTILLI, CELSO VALENTIM; HAMMER, PETER. PMMA-silica nanocomposite coating: Effective corrosion protection and biocompatibility for a Ti6Al4V alloy. Materials Science & Engineering C-Materials for Biological Applications, v. 110, MAY 2020. (15/11907-2, 15/09342-7)

HAMMER, PETER; UVIDA, MAYARA CARLA; TRENTIN, ANDRESSA. Self-Healing Organic-Inorganic Coatings. COATINGS, v. 12, n. 11, p. 5-pg., 2022-11-01. (19/13871-6, 15/11907-2, 15/09342-7)

HARB, SAMARAH VARGAS; TRENTIN, ANDRESSA; CARNEIRO DE SOUZA, THIAGO AUGUSTO; MAGNANI, MARINA; PULCINELLI, SANDRA HELENA; SANTILLI, CELSO VALENTIM; HAMMER, PETER. Effective corrosion protection by eco-friendly self-healing PMMA-cerium oxide coatings. CHEMICAL ENGINEERING JOURNAL, v. 383, MAR 1 2020. (15/11907-2, 15/09342-7)

UVIDA, MAYARA CARLA; TRENTIN, ANDRESSA; HARB, SAMARAH VARGAS; PULCINELLI, SANDRA HELENA; SANTILLI, CELSO VALENTIM; HAMMER, PETER. Nanostructured Poly(methyl Methacrylate)-Silica Coatings for Corrosion Protection of Reinforcing Steel. ACS APPLIED NANO MATERIALS, v. 5, n. 2, p. 13-pg., 2022-02-01. (15/11907-2, 15/09342-7, 19/13871-6)

HARB, V, SAMARAH; RODRIGUES, MARIANA S.; DE SOUZA, THIAGO A. C.; TRENTIN, ANDRESSA; UVIDA, MAYARA C.; POCHAPSKI, DANIEL J.; PULCINELLI, SANDRA H.; SANTILLI, V, CELSO; HAMMER, PETER. Smart PMMA-cerium oxide anticorrosive coatings: Effect of ceria content on structure and electrochemical properties. Progress in Organic Coatings, v. 161, DEC 2021. (15/11907-2, 15/09342-7, 19/13871-6)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

TRENTIN, Andressa. Structure and electrochemical properties of PMMA-silica hybrid coatings modified with cerium and lithium ions. 2019. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Química. Araraquara Araraquara.