Abstract
Methylene-, isopropylidene-, and methoxymethylene-protected glyceryl units have been linked to cyclic and high polymeric phosphazenes. The structures and physical properties of these protected glyceryl-substituted phosphazenes were investigated by 31P NMR, NMR, and IR spectroscopy and thermal analysis. Hydrolytic deprotection reactions in acidic media yielded the water-soluble cyclic trimeric and high polymeric glycerylphosphazenes. Cross-linking of the protected high polymers was accomplished by 7 irradiation. The deprotected polymer cross-linked in the presence of adipoyl chloride or hexamethylene diisocyanate to yield systems that absorbed water to form hydrogels. Slow hydrolysis of poly(diglycerophosphazene) occurred in neutral aqueous media at 37 °C to yield glycerol, phosphoric acid, and ammonia.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1980-1985 |
| Number of pages | 6 |
| Journal | Macromolecules |
| Volume | 21 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1988 |
All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry
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