6533b858fe1ef96bd12b623b

RESEARCH PRODUCT

Macromonomers on the basis of 2-phenyl-2-oxazoline

Elmar SchwarzenbachRolf C. Schulz

subject

Materials sciencePolymers and PlasticsBulk polymerizationOrganic ChemistryRadical polymerizationChain transferCondensed Matter PhysicsLiving free-radical polymerizationChain-growth polymerizationPolymer chemistryMaterials ChemistryOrganic chemistryLiving polymerizationReversible addition−fragmentation chain-transfer polymerizationIonic polymerization

description

By initiation of the ring-opening polymerization of 2-phenyl-2-oxazoline (1) with p-iodomethylstyrene a macromonomer with a styrene end-group (2) is obtained. The degree of polymerization was varied between 10 and 16. The radical copolymerization of 2 with styrene is described. 1 forms with methyl triflate a very stable oxazolinium salt which is a good initiator for the bulk polymerization of 1 at temperatures of 50–70°C. It was conclusively proved that under these conditions the polymerization proceeds by a living mechanism. By termination with N, N-dimethylaminopropylmeth-acrylamide a macromonomer (5) was obtained. 5 can be radically homopolymerized. This comb-like polymer 6 has the typical behaviour of a poly-electrolyte and a polymeric amphiphile.

https://doi.org/10.1002/masy.19880130135