Synthesis and Properties of Lightly Crosslinked Poly((meth)acrylic acid) Microparticles Prepared by Free Radical Precipitation Polymerization
| Autor: | James W. McGinity, Courtney M. Creecy, Nicholas A. Peppas, J. Brock Thomas |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Acrylate Materials science Polymers and Plastics Carboxylic acid technology industry and agriculture macromolecular substances General Chemistry Condensed Matter Physics Pentaerythritol chemistry.chemical_compound Monomer chemistry Polymer chemistry Materials Chemistry Precipitation polymerization Copolymer Microparticle Acrylic acid |
| Zdroj: | Polymer Bulletin. 57:11-20 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/s00289-006-0533-3 |
| Popis: | Microparticles composed of (meth)acrylic acid, potassium (meth)acrylate, and trifunctional pentaerythritol were prepared using a thermally initiated free radical precipitation polymerization in ethyl acetate. The particle synthesis method was investigated, and the structure and morphology of the microparticles was evaluated using Fourier transform infrared spectroscopy and scanning electron microscopy. Results indicate that the physicochemical properties of the microparticles are dependent on the crosslinking ratio and type of carboxylic acid monomer employed in the polymerizations. The glass transition temperature behavior is significantly affected by the monomer type and the amount of crosslinking agent employed. The swelling dynamics of the microparticles are also pH, monomer, and crosslinking ratio dependent. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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