Macroscopic N-halamine biocidal polymeric beads

The particle size of N-halamine biocidal polymers was methodically modified forming beads of different sizes by blending water-insoluble N-halamine polyurethane with sodium alginate as the matrix and loading heterocyclic rings onto modified silica gels. The biological activity of the prepared beads...

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Bibliographic Details
Published in:Journal of applied polymer science 2010-05, Vol.116 (4), p.2396-2408
Main Authors: Ahmed, Abd El-Shafey I, Hay, John N, Bushell, Michael E, Wardell, John N, Cavalli, Gabriel
Format: Article
Language:English
Subjects:
Applied sciences
Bacteria
Beads
Biocides
Blending
Composites
Derivatives
Exact sciences and technology
Forms of application and semi-finished materials
N-halamine
Optimization
Polymer industry, paints, wood
Polyurethane resins
Reproduction
silica
Sodium alginate
Technology of polymers
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Summary:The particle size of N-halamine biocidal polymers was methodically modified forming beads of different sizes by blending water-insoluble N-halamine polyurethane with sodium alginate as the matrix and loading heterocyclic rings onto modified silica gels. The biological activity of the prepared beads and halogenated modified silica derivatives was evaluated against examples of Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. The recycling possibilities and the optimum preparation conditions of the blended beads were investigated; blending prehalogenated polyurethane (5%, w/v) with sodium alginate (3%, w/v) followed by crosslinking with CaCl₂ (10%, w/v) at 40°C are the optimum preparation conditions for the alginate beads.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.31774