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Synthesis and Radical Polymerization of Dissymmetric Fumarates with Alkoxyethyl and Bulky Siloxy Groups by Masato Ohnishi; Takahiro Uno; Masataka Kubo; Takahito Itoh is a Materials Science article available to read on EtoBox.

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## Abstract Novel dissymmetric fumarate monomers (**1a**–**c**) having both an alkoxyethyl group such as 2‐methoxyethyl (**a**), 2‐(2‐methoxyethoxy)ethyl (**b**), and 2‐(2‐(2‐methoxyethoxy)ethoxy)ethyl (**c**) and a bulky 3‐[tris(trimethylsiloxy)silyl]propyl group were synthesized successfully, and their radical homopolymerizations and copolymerizations with styrene (St) were investigated. Monomer reactivities of the **1a**–**c** in homopolymerizations were enhanced with an increase in the length of alkoxyethyl chains. The enhancement in the reactivity was explained with the suppression of the termination reaction, resulting from the increased steric hindrance induced by an increase in the size of alkoxyethyl chains. Copolymerizations of the **1a**–**c** with St were carried out in bulk in the presence of AIBN at 60 °C, and their copolymerizations proceeded in a highly alternating tendency regardless of alkoxyethyl chain lengths. The __Q__, __e__ values of the **1a**–**c** were obtained as 0.48, +1.55 for the **1a**, 0.66, +1.16 for the **1b**, and 0.60, +1.16 for the **1c**, respectively, from the terminal model reactivity ratios, and the **1a**–**c** were found to be conjugative,

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Author

Masato Ohnishi; Takahiro Uno; Masataka Kubo; Takahito Itoh

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-624X)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)