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 ma
Radical copolymerizability of end-allenoxy polyoxyethylenes with styrene
β Scribed by Yassin A. Aggour; Ikuyoshi Tomita; Takeshi Endo
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 319 KB
- Volume
- 29
- Category
- Article
- ISSN
- 1381-5148
No coin nor oath required. For personal study only.
β¦ Synopsis
Radical copolymerizabilities
of poly(ethylene glycol) allenyl methyl ether (2a and 2b, the number average molecular weight (M,) = 390 and 590, receptively) were evaluated by the copolymerization with styrene monomer (St). The relative reactivities of macromonomers have been decreased as the length of the oxyethylene side chains in the macromonomer increased, and were estimated to be q = 2.5 f 0. I, r2 = 0.96 f 0.2 for 2a and q = I .4 4 0.1, r-2 = 2.4 f 0.3 for 2b.
π SIMILAR VOLUMES
In a previous study of the copolymerization of butyl acrylate with styrenic macromonomers, it was shown that benzylic hydrogen atoms are involved in a transfer process. In order to investigate these latter reaction, model compounds were synthesized and used as transfer agents in the polymerization o
The unsaturated polyoxyethylene (PEO) was synthesized by copolymerization of ethylene oxide with allyl glycidyl ether in toluene using bimetallic-oxo-alkoxide as a catalyst. The effects of polymerization conditions on conversion and intrinsic viscosity of the copolymer were studied. The unsaturated