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Synthesis and monomer reactivity ratios of ethyl α‐acetoxyacrylate and acrylic acid copolymers
Author(s) -
Loubat Cédric,
BattCoutrot Delphine,
Guyot Bernard,
Robin JeanJacques,
Boutevin Bernard
Publication year - 2005
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.1884
Subject(s) - copolymer , monomer , polymer chemistry , acrylic acid , reactivity (psychology) , azobisisobutyronitrile , polymerization , hydrolysis , radical polymerization , chemistry , radical initiator , acetonitrile , organic chemistry , polymer , medicine , alternative medicine , pathology
The synthesis of ethyl α‐acetoxyacrylate (EAA) and the study of its radical polymerization is described. We report the monomer reactivity ratios for copolymers of EAA and acrylic acid (AA) using three different methods: the Jaacks, the Macret and the Fineman–Ross methods. Copolymers were obtained by free radical polymerization initiated by 2,2′‐azobisisobutyronitrile in acetonitrile solutions and were analyzed by NMR and HPLC. The HPLC analysis was used to determine the molar fractions of EAA and AA in the copolymers. The reactivity ratios were estimated to be close to 1 for each monomer. Thus, copolymers of poly(acrylic acid) bearing some biodegradable units of EAA in the chain were subsequently prepared. The study of the hydrolysis of these units shows that only basic conditions were efficient to lead to hydrolyzed monomer units. Copyright © 2005 Society of Chemical Industry