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Bark Suberin as a Renewable Source of Long‐Chain ω ‐Hydroxyalkanoic Acids
Author(s) -
Nilsson Helena,
Olsson Ann,
Lindström Mikael,
Iversen Tommy
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200851215
Subject(s) - toluene , bark (sound) , condensation polymer , suberin , polymerization , solvent , catalysis , chemistry , polyester , polymer chemistry , molecular sieve , organic chemistry , materials science , nuclear chemistry , polymer , lignin , physics , acoustics
Summary : Polycondensations of cis ‐9,10‐epoxy‐18‐hydroxyoctadecanoic acid, isolated from birch outer bark, were performed at 75 °C in toluene as solvent and at 85 °C in bulk using immobilized Candida antarctica lipase B as catalyst. The polycondensation performed in toluene in presence of molecular sieves gave a polyester with DP 50 after 24 h. The same DP was obtained at much shorter reaction time (3 h) by bulk polymerization in an open vial without any drying agent present.