Photo- and Thermoresponsive Reversible Wettability and Corrosion Protection of Electrophoretically Deposited TiO2/Pectin Composite Coatings DOI
Marcel Roy B. Domalanta, Mark Rigel R. Ali, Reymark D. Maalihan

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Stimuli-responsive coatings with reversible wettability hold substantial promise for biomedical, environmental, and industrial applications. Among these, titanium dioxide (TiO2)-based are widely studied their unique photoresponsivity high refractive index; however, they often rely on complex resource-intensive production processes, raising environmental economic concerns. This study introduces a sustainable alternative TiO2-pectin composite coating stainless steel fabricated via simple electrophoretic deposition process. Pectin, renewable hydrophilic polysaccharide, was incorporated specifically to optimize the wettability. Here, we show that exhibit wettability, transitioning from superhydrophobic (154°) (57.46°) under UV irradiation, complete recovery through thermal treatment at 80 °C. Fourier-transform infrared X-ray photoelectron spectroscopy before after exposure confirm composites' chemical structural morphology, pectin concentration playing key role in modulating this behavior. Mechanistically, pectin's functional groups synergize TiO2's surface properties enhance responsive water adsorption enable switchable Potentiodynamic polarization tests reveal mixed-type inhibition behavior, corrosion current densities of 180 221.3 nA/cm2 1 7 days NaCl solution immersion, respectively, demonstrating sustained resistance saline conditions. These eco-friendly offer multifunctional combining design resistance.

Language: Английский

Kelvin Probe Force Microscopy: Uncovering New Frontiers in Coating and Corrosion Studies DOI
Reymark D. Maalihan, Marcel Roy B. Domalanta, Mark Rigel R. Ali

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Language: Английский

Citations

1
Valorization of extractible soybean by-products for polymer composite and industrial applications DOI

Jan Vincent M. Madayag,

Marcel Roy B. Domalanta, Reymark D. Maalihan

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115703 - 115703

Published: Feb. 1, 2025

Language: Английский

Citations

0
Accelerated corrosion assessment through the AC/DC/AC electrochemical method DOI
Marcel Roy B. Domalanta, Mark Rigel R. Ali, Reymark D. Maalihan

et al.

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 203, P. 109166 - 109166

Published: March 1, 2025

Language: Английский

Citations

0
Effects of oxidation and silanization on the durability and tensile properties of carbon nanotube‐reinforced vinyl‐ester nanocomposites DOI Creative Commons
Yasaman Alaei, Babak Fathi,

Patrice Cousin

et al.

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract Carbon nanotubes (CNTs) have received significant attention due to their exceptional physical and mechanical properties. Advancements in surface modification techniques facilitated use thermoset resin‐based nanocomposites, enhancing engineering properties with minimal additions (0.1 wt.%). This study investigated the effects of various functionalization methods multi‐walled carbon (MWCNTs) on mechanical, physical, durability, moisture absorption vinyl‐ester resin (VE). While VE resins resist short‐term environmental degradation, prolonged exposure alkaline chemicals can lead deterioration. To overcome this challenge, MWCNTs were modified using wet acid oxidation, silanization (both without prior oxidation), a zirconate coupling agent (SM7SN). Modifications characterized scanning electron microscopy (SEM) x‐ray photoelectron spectroscopy (XPS). The tensile test dynamic analysis (DMA) performed specimens before after conditioning NaOH solution. Moisture was measured by immersing tap water at 50°C. results showed that pre‐oxidation significantly enhanced silane attachment improved durability negligible reduction conditioning. Using SM7SN as dispersing matrix offered simpler method compared other techniques. Highlights Covalent non‐covalent CNT dispersion matrix. Pre‐oxidation Si‐O‐C bonds. SEM XPS confirmed successful dispersion. Functionalized CNTs reduced nanocomposites. ensured uniform simplified modification.

Language: Английский

Citations

0
Photo- and Thermoresponsive Reversible Wettability and Corrosion Protection of Electrophoretically Deposited TiO2/Pectin Composite Coatings DOI
Marcel Roy B. Domalanta, Mark Rigel R. Ali, Reymark D. Maalihan

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Stimuli-responsive coatings with reversible wettability hold substantial promise for biomedical, environmental, and industrial applications. Among these, titanium dioxide (TiO2)-based are widely studied their unique photoresponsivity high refractive index; however, they often rely on complex resource-intensive production processes, raising environmental economic concerns. This study introduces a sustainable alternative TiO2-pectin composite coating stainless steel fabricated via simple electrophoretic deposition process. Pectin, renewable hydrophilic polysaccharide, was incorporated specifically to optimize the wettability. Here, we show that exhibit wettability, transitioning from superhydrophobic (154°) (57.46°) under UV irradiation, complete recovery through thermal treatment at 80 °C. Fourier-transform infrared X-ray photoelectron spectroscopy before after exposure confirm composites' chemical structural morphology, pectin concentration playing key role in modulating this behavior. Mechanistically, pectin's functional groups synergize TiO2's surface properties enhance responsive water adsorption enable switchable Potentiodynamic polarization tests reveal mixed-type inhibition behavior, corrosion current densities of 180 221.3 nA/cm2 1 7 days NaCl solution immersion, respectively, demonstrating sustained resistance saline conditions. These eco-friendly offer multifunctional combining design resistance.

Language: Английский

Citations

0