Citation: . POLYMERIZATION OF ETHYLENE METHYL PHOSPHATE IN THE PRESENCE OF SODIUM POLY(ETHYLENE GLYCOL)ATE*[J]. Chinese Journal of Polymer Science, ;1999, 17(3): 259-264. shu

POLYMERIZATION OF ETHYLENE METHYL PHOSPHATE IN THE PRESENCE OF SODIUM POLY(ETHYLENE GLYCOL)ATE*

Received Date: 19 January 1998

Poly(ethylene methyl phosphate)-poly(ethylene glycol)-poly(ethylene methyl phosphate) triblockcopolymers carrying hydroxyl group at both chain ends were synthesized with sodium poly(ethyleneglycol)ate as initiator. The effects of the factors such as solvent, amount of the initiator and reaction timewere investigated. The copolymers were characterized by IR,1H-NMR, 1H{31P}-NMR, 13C-NMR, 31P{1H}-NMR, and DSC. High molecular weight of the copolymer and high yield of the polymerization were achieved within 3 min at 25℃.The polymerization process was studied by 31P{1H}-NMR and transesterification was found during longer polymerization time.
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