Silicone rubber-hydrogel composites as polymeric biomaterials. VI. Transport properties in the water-swollen state
Language English Country Netherlands Media print
Document type Journal Article
PubMed
7548614
DOI
10.1016/0142-9612(95)93861-7
PII: 0142961295938617
Knihovny.cz E-resources
- MeSH
- Acrylic Resins chemistry metabolism MeSH
- Biocompatible Materials standards MeSH
- Diffusion MeSH
- Electric Conductivity MeSH
- Gels MeSH
- Polymethacrylic Acids chemistry metabolism MeSH
- Mathematics MeSH
- Methylmethacrylates chemistry metabolism MeSH
- Molecular Weight MeSH
- Polyhydroxyethyl Methacrylate chemistry metabolism MeSH
- Polymers MeSH
- Prostheses and Implants MeSH
- Cross-Linking Reagents MeSH
- Silicone Elastomers chemistry metabolism MeSH
- Composite Resins chemistry metabolism MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Acrylic Resins MeSH
- Biocompatible Materials MeSH
- Gels MeSH
- HTR composite MeSH Browser
- Polymethacrylic Acids MeSH
- Methylmethacrylates MeSH
- polyacrylamide gels MeSH Browser
- Polyhydroxyethyl Methacrylate MeSH
- Polymers MeSH
- polymethacrylic acid MeSH Browser
- Cross-Linking Reagents MeSH
- Silicone Elastomers MeSH
- Composite Resins MeSH
Permeation of inorganic salts in water-swollen silicone rubber-hydrogel composites consisting of a silicone rubber matrix and lightly cross-linked particles of poly(2-hydroxyethyl methacrylate), poly(2-hydroxyethyl methacrylate-co-methacrylic acid), poly(methacrylic acid), polyacrylamide or poly(acrylamide-co-methacrylic acid) hydrogels was investigated. The results, together with earlier data on permeation of non-ionic low-molecular-weight substances through the composite materials, were evaluated in terms of the free-volume diffusion theory. It was found that the materials with water content exceeding a certain limit are highly permeable to the salts, and that, as regards permeation properties, they behave as homogeneous water-swollen hydrogels. The dependence of electrical conductivity of the water-swollen composites on the hydrogel phase content was measured, and the results are discussed in relation to other transport properties and to the structure of the materials.
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