Toward pH-responsive coating materials--high-throughput study of (meth)acrylic copolymers

Area of Science:

• Polymer Chemistry
• Materials Science

Background:

• Controlled release systems are vital for drug delivery.
• Understanding polymer behavior under physiological conditions is key.

Purpose of the Study:

• To investigate the release kinetics of β-naphthol orange from (meth)acrylate copolymers.
• To evaluate the influence of environmental factors like pH and ethanol on release behavior.
• To align the study with high-throughput experimentation requirements.

Main Methods:

• Synthesis of five (meth)acrylate-based statistical copolymer series via free radical polymerization.
• Encapsulation of a model compound (β-naphthol orange).
• Investigation of pH-dependent release kinetics using UV-vis spectroscopy at pH 1.2 and 6.8.
• Assessment of ethanol's influence (0 and 40 vol%) on release in an acidic medium.

Main Results:

• Polymer composition significantly affected the release rate of β-naphthol orange.
• Environmental conditions (pH and ethanol concentration) modulated the release kinetics.
• The study successfully demonstrated a high-throughput approach to polymer release studies.

Conclusions:

• The developed (meth)acrylate copolymers show tunable release profiles based on their composition and environmental stimuli.
• These findings are relevant for designing advanced drug delivery systems with controlled release characteristics.
• The high-throughput methodology enables efficient screening of polymer formulations for specific applications.