Synthesis and radical polymerization of end-allenoxy polyoxyethylene macromonomer

✍ Scribed by Yassin A. Aggour; Ikuyoshi Tomita; Takeshi Endo

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 488 KB
• Volume: 28
• Category: Article
• ISSN: 1381-5148
• DOI: 10.1016/1381-5148(95)00086-1

✦ Synopsis

Poly(ethylene glycol) allenyl methyl ether (2) was prepared by the reaction of poly(ethylene glycol) monomethyl ether (the number average molecular weight (M,) = 550) with propargyl bromide, followed by the base-catalyzed isomerization reaction. Functionality of end-allenyl groups in the obtained macromonomer was determined as 92%

(from 'H-NMR). The radical polymerization of 2 was carried out in bulk and in benzene at 60 or 120°C to yield a polymer with poly(ethylene glycol) side chains. For instance, a polymer (3, 1!4, = 3900) was obtained in 39% yield by the polymerization of 2 in bulk at 60°C for 48 h using 6 mol% of or&-azobisisobutyronitrile (AIBN). The obtained polymer was soluble in organic solvents as well as water.