Abstract
The change of tacticity of methacrylate blocks in the anionic block copolymerization of ethylene oxide with methyl methacrylate or tert-butyl methacrylate as function of the number of monomeric units in the poly(ethylene oxide) (PEO) sequences formed in the first polymerization step, was studied. The fraction of the syndiotactic triads of the polymethacrylates was found to increase with the DP of the PEO precursor. When the plateau value was reached, the tacticity was similar to that of poly(methyl methacrylate) initiated by alkali alkoxides when solvated with crown ethers. The variation of the tacticity was smaller with tert-butyl methacrylate than with methyl methacrylate. The growth reaction of methacrylate monomers was found to follow Bernoullian statistics. It is assumed that the solvation of the counterions increases with increasing of the monomeric units in the starting poly(ethylene oxide) blocks.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
