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Syndiotactic‐specific radical polymerization of N ‐isopropylacrylamide in toluene at low temperatures in the presence of silyl alcohols
Author(s) -
Hirano Tomohiro,
Kamikubo Takahiro,
Ute Koichi
Publication year - 2012
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4166
Subject(s) - silylation , toluene , polymer chemistry , alkyl , polymerization , tacticity , chemistry , monomer , radical polymerization , polymer , photochemistry , organic chemistry , catalysis
The radical polymerization of N ‐isopropylacrylamide was carried out in toluene at low temperatures in the presence of silyl alcohols, such as triethylsilanol. Poly( N ‐isopropylacrylamide) with a racemo dyad content of 75% was obtained at − 80 °C with a 4:1 triethylsilanol to monomer ratio loading. NMR analysis suggests that the mechanism for syndiotactic induction, in the presence of silyl alcohols, may be similar to that observed with alkyl alcohols. In this case, a 1:2 complex formation, via hydrogen bonding interactions, leads to the induction of syndiotactic specificity. Copyright © 2012 Society of Chemical Industry