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Updated: Jun 7, 2026

Combinatorial Synthesis of and High-throughput Protein Release from Polymer Film and Nanoparticle Libraries
Published on: September 6, 2012
Hydrophobic weak acid polymers as controlled release carriers.
Jose M Cornejo-Bravo1, Yareli Partida-Soria, Aracely Serrano-Medina
1Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Universidad 14418, Parque Industrial Internacional, Tijuana, México. jmcornejo@uabc.mx
Poly(carboxyalkyl methacrylates) show pH-sensitive drug release, indicating potential for colon-specific drug delivery systems. Hydrophobicity and pH influence release, with hydrophilic fillers accelerating the rate.
Area of Science:
- Polymer science
- Materials science
- Pharmaceutical technology
Background:
- Poly(carboxyalkyl methacrylates) are explored for drug delivery applications.
- Understanding polymer-drug interactions is crucial for controlled release.
Purpose of the Study:
- To investigate poly(carboxyalkyl methacrylates) as a cationic-drug delivery system.
- To evaluate the influence of pH and complex hydrophobicity on drug release kinetics.
Main Methods:
- Preparation of compressed tablets using different polymer/drug complexes.
- Kinetics experiments to analyze drug release mechanisms.
- Assessment of drug release at pH 6.8 and 8.0.
Main Results:
- Drug release is dependent on complex hydrophobicity and environmental pH.
- Dissociation/erosion mechanism observed for soluble polymers; dissolution/diffusion for others.
- Hydrophilic fillers were found to increase the drug release rate.
Conclusions:
- Poly(carboxyalkyl methacrylates) exhibit pH-sensitive drug release properties.
- These polymers show potential for developing colon-specific drug delivery systems.
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Modified-Release Drug Delivery Systems: Stimuli-Activated
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Modified-Release Drug Delivery Systems: Rate-Programmed I
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