Premium
A Comparison of the Syntheses of High Molar Mass Epoxy Resins on the Basis of two Groups of Modified Vegetable Oils
Author(s) -
Czub Piotr
Publication year - 2009
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.200950320
Subject(s) - epoxy , molar mass , epichlorohydrin , bisphenol a , triethanolamine , chemistry , soybean oil , organic chemistry , environmentally friendly , raw material , linseed oil , materials science , analytical chemistry (journal) , polymer , ecology , food science , biology
Abstract Application of epoxidized and hydroxylated natural oils as a new group of environmentally friendly and renewable raw materials for the synthesis of high molar mass epoxy resins is described. Selected vegetable oils were first oxidized and next reacted with mono and diethylene glycols. Obtained epoxidized soybean, rapeseed, linseed and sunflower oils were used together with Bisphenol A in the fusion process. Analogously, hydroxylated soybean and rapeseed oils were reacted with commercial grade Bisphenol A‐based low molar mass epoxy resin. The fusion process was carried out in the presence of selected catalysts ( i.e ., lithium chloride, 2‐methylimidazole, triphenylphosphine and triethanolamine) giving high molar mass epoxies. The relationship between type of modified oil used in the synthesis and reaction conditions and properties of synthesized resins ( e.g ., value and distribution of average molar mass, contents of epoxy groups and colour) is discussed.