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Biologically active organotin polymers.

R V Subramanian

    Annals of the New York Academy of Sciences
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    This study details polymer synthesis for controlled release, anchoring tin as tributyltin carboxylate. Cross-linking affects tin release and biological activity against marine fouling organisms.

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    Area of Science:

    • Polymer Chemistry
    • Materials Science
    • Environmental Science

    Background:

    • Polymers with chemically anchored tributyltin carboxylate groups are explored.
    • Controlled release formulations are developed using cross-linked polymer networks.

    Purpose of the Study:

    • To synthesize and characterize polymers with tributyltin carboxylate for controlled release applications.
    • To investigate the relationship between polymer structure, tin release, and biological activity.
    • To assess the efficacy of these materials against marine fouling organisms.

    Main Methods:

    • Synthesis of a base copolymer with anhydride or carboxyl groups.
    • Partial esterification with tributyltin oxide followed by reaction with diepoxides for cross-linking.
    • Nuclear Magnetic Resonance (NMR) spectroscopy for structural analysis.

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  • Biotoxicity testing against marine and soil bacteria.
  • Ocean tests to evaluate anti-fouling properties.
  • Dynamic mechanical and dielectric analysis.

    • Main Results:

    • Cross-linked controlled release formulations were successfully synthesized.
    • Network structure and cross-link properties were tunable by altering esterification, epoxy monomer, and catalyst.
    • Rapid exchange in tributyltin carboxylates facilitates fast interfacial reactions.
    • Biotoxicity tests showed significant effects of cross-linking on inhibition zones.
    • Effective biological activity against marine fouling organisms was confirmed in ocean tests.

    Conclusions:

    • Polymer matrix properties significantly influence tributyltin release.
    • The developed materials demonstrate potential as effective anti-fouling agents.
    • Further investigation into structure-property relationships for controlled release is warranted.