Polymerization

The synthesis of polymers which contain vanadocene in the polymer backbone is accomplished by interfacial condensation reactions with the appropriate diols, diacids, and diamines. Structural characterization is accomplished by using FTIR and HREI-MS spectroscopic methods. Weight average molecular weights were determined using light scattering photometry for products which are soluble. Molecular weights for the products vary from 3500 to 15,000 Daltons. The structural characterization results are consistent with the proposed structures.

Polyphosphate esters have been synthesized from reaction of the pentaerythritol ester of phosphorochloridic acid with different diols--bisphenol A, 1,6-hexanediol, 1,3-bis(4-hydroxybutyl)-tetramethyldisiloxane and 5-iodo-2'-deoxyuridine. All products are medium to high molecular weight. The product from bisphenol A gives fibers from concentrated solution. The product from 1,3-bis(4-hydroxybutyl)-tetramethyldisiloxane acts as an adhesive. The products were made for potential flame retardant applications in the electronics industry. The characterizations by MS, NMR and FT-IR are in agreement with the proposed structures.

Organotin-modified poly(vinyl alcohol) products and titanocene-containing polyethers were synthesized via the interfacial polymerization technique. The structures were determined using infrared and mass spectroscopy. Further characterization involved elemental analysis, thermal analysis, and solubility studies. For the organotin products, the biological activities towards selected microorganisms were determined. The products exhibited selective inhibition of Candida Albicans, the microorganism most responsible for yeast infections in man. The titanocene-containing polyethers exhibited flexibility when derived from longer chained polyethylene glycols, but were inflexible when shorter chained polyethylene glycols were used.