SYNTHESIS OF TRI-BLOCK COPOLYMER BASED ON POLYISOBUTYLENE AND POLY(ETHYLENE GLYCOL)

Authors
GAO B KOPS J
Citation
B. Gao et J. Kops, SYNTHESIS OF TRI-BLOCK COPOLYMER BASED ON POLYISOBUTYLENE AND POLY(ETHYLENE GLYCOL), Polymer bulletin, 34(3), 1995, pp. 279-286
Citations number
21
Categorie Soggetti
Polymer Sciences
Journal title
Polymer bulletin → ACNP
ISSN journal
01700839
Volume
34
Issue
3
Year of publication
1995
Pages
279 - 286
Database
ISI
SICI code
0170-0839(1995)34:3<279:SOTCBO>2.0.ZU;2-E
Abstract
A block copolymer having polyisobutylene (PIB) as hydrophobic segment and poly(ethylene glycol) (PEG) as hydrophilic segments has been synth esized by a two-step process. Polyisobutylene was functionalized with phenol at both ends using BF3 . OEt(2) as catalyst, and then coupled w ith tosylated monomethoxy PEG. The reaction conditions were establishe d by model studies. The characterization of the reaction product by NM R and GPC verified the formation of block copolymer by the coupling re action.