Tuning Surface Functions by Hydrophilic/Hydrophobic Polymer Brushes

Area of Science:

• Materials Science
• Surface Chemistry
• Polymer Science

Background:

• Polymer brushes are effective for surface modification, offering control over wettability and surface functions.
• Recent interest is driven by their potential in regulating surface properties for diverse applications.

Purpose of the Study:

• To review recent advancements in functional polymer brush surfaces, specifically focusing on surface wettability regulation.
• To provide a comprehensive understanding of polymer brushes for researchers.

Main Methods:

• Discussion of fundamental polymer brush structures and fabrication methods, including "grafting-to" and "grafting-from" strategies.
• Emphasis on subsurface-initiated atom transfer radical polymerization (SSI-ATRP) for robust polymer brushes.
• Exploration of stimuli-responsive polymer brush surfaces for reversible wettability transitions.

Main Results:

• Summarizes advancements in polymer brush fabrication and their stimuli-responsive properties.
• Details applications including lubrication, drag reduction, antifouling, antifogging, anti-icing, oil-water separation, actuation, and emulsion stability.
• Addresses challenges such as mechanical strength, biocompatibility, recyclability, and preparation efficiency.

Conclusions:

• Polymer brushes offer significant potential for surface wettability regulation and functionalization.
• Continued development in preparation technology will expand their role in various scientific and industrial fields.
• Future research should focus on overcoming current challenges to enhance practical applicability.