5 research outputs found
Dependence of the fraction of different polymer chain conformations on temperature and deformation
Rigid thermosetting liquid moulding resin from sunflower oil
271-276Sunflower
oil monoglyceride (SFOM) has been prepared by transesterification of sunflower
oil with glycerine in the temperature range 200-230oC using sol-gel
prepared nanocrystalline MgO as catalyst. The catalyst has been characterized
by powder XRD, BET surface area measurement and atomic force microscopy. The
resulting SFOM has been reacted with maleic anhydride to produce SFOM maleate
half esters, using 2-methly imidazole as the catalyst. The effect of the
catalyst concentration is optimized. Finally, the polyfunctional SFOM maleate
half ester monomer is free radically copolymerized with reactive diluents such
as styrene to produce hard, thermosetting liquid moulding resin. The polymer is characterized by
differential scanning calorimetry and IR spectroscopic techniques