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Macromonomer Purification Strategy for Well‐Defined Polymer Amphiphiles Incorporating Poly(ethylene glycol) Monomethacrylate
Author(s) -
Taniguchi Ikuo,
Kuhlman William A.,
Griffith Linda G.,
Mayes Anne M.
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600015
Subject(s) - peg ratio , ethylene glycol , macromonomer , polymer chemistry , copolymer , ethylene glycol dimethacrylate , amphiphile , polymerization , polymer , materials science , end group , chemistry , organic chemistry , finance , economics , methacrylic acid
Summary: Commercial hydroxy‐terminated poly(ethylene glycol) monomethacrylates (PEG‐MAs) contain poly(ethylene glycol) dimethacrylate, which leads to unfavorable gel formation on polymerization. Here, hydroxy‐terminated PEG‐MA is readily isolated using a dimethylsilyl resin chlorinated with 1,3‐dichloro‐5,5‐dimethylhydantoin. Solution polymerization of the isolated PEG‐MA by free radical routes gives a high‐molecular‐weight amphiphilic graft copolymer without cross‐linking. The resulting polymer is stable for long periods in ambient conditions with preservation of the hydroxy end groups of PEG.Commercial hydroxy‐terminated PEG‐MA can be separated readily and completely from PEG dimethacrylate contaminant with chlorinated dimethylsilyl resin.