Dual-Responsive Macromolecular Surfaces with Binary Patterns

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

Published: Feb. 24, 2025

Language: Английский

Photo- and Thermoresponsive Reversible Wettability and Corrosion Protection of Electrophoretically Deposited TiO₂/Pectin Composite Coatings

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

Functional stimuli-responsive polymers on micro- and nano-patterned interfaces

Polymer, Journal Year: 2024, Volume and Issue: 317, P. 127958 - 127958

Published: Dec. 15, 2024

Language: Английский