Preparation of Golf Ball-like Polymer Particles Bearing Site-Selective Functional Groups

Area of Science:

• Polymer Chemistry
• Materials Science
• Nanotechnology

Background:

• Golf ball-like particles possess unique shapes and properties valuable for therapeutics, diagnostics, and chemical sensing.
• Current limitations include a lack of functional groups on particle surfaces and methods for site-specific functionalization.
• Targeted modification of concave and convex surfaces remains a challenge for these heteromorphic particles.

Purpose of the Study:

• To develop a method for site-selective functionalization of golf ball-like polymer particles.
• To introduce anionic and cationic functional groups onto the convex surfaces of these particles.
• To expand the application scope of golf ball-like particles through tailored surface chemistry.

Main Methods:

• Utilized seeded-dispersion polymerization (SDP) of n-butyl methacrylate (nBMA) in the presence of polystyrene-seed particles and dodecane.
• Employed 2,2'-azobis(isobutyronitrile) as an initiator to form poly(nBMA) on the concave phase.
• Controlled particle shape by adjusting nBMA amount and solvent composition.

Main Results:

• Successfully prepared golf ball-like polymer particles with functional groups primarily on their convex surfaces.
• Demonstrated site-selective introduction of anionic and cationic groups.
• Confirmed the location of ionic groups via metal-nanoparticle adsorption studies.

Conclusions:

• The seeded-dispersion polymerization method enables the preparation of functionalized golf ball-like particles.
• This approach allows for targeted introduction of anionic or cationic groups onto the convex surfaces.
• The developed technique enhances the versatility of golf ball-like particles for advanced applications.