BLOCK AND GRAFT-COPOLYMERS WITH POLYSILOXANE AND POLY(N-ACYLIMINOETHYLENE) SEQUENCES

A series of polysiloxane/poly(N-acetyliminoethylene) (PSiO/PNAI) block and graft copolymers were synthesized by the initiation of 2-methyl-2 -oxazoline (MeOZO) polymerization with functional polysiloxane prepoly mers. The copolymerization products were characterized by IR- and H-1 NMR spectroscopy, elemental analysis, DSC and thermogravimetry. The in sertion of both hydrophobic and hydrophilic sequences in the macromole cular structure induces a behavior characteristic of amphiphilic compo unds. Their solution and solid state behavior evidenced peculiarities which make them able to act as nonionic emulsifiers, surface modifiers , gels, etc.