N. Cordeiro et al., CORK SUBERIN AS A NEW SOURCE OF CHEMICALS - 2 - CRYSTALLINITY, THERMAL AND RHEOLOGICAL PROPERTIES, Bioresource technology, 63(2), 1998, pp. 153-158
Citations number
19
Categorie Soggetti
Energy & Fuels","Biothechnology & Applied Migrobiology",Agriculture
Suberin samples, obtained by alkaline methanolysis from cork (Quercus
suber L.), were submitted to various physical characterizations; DSC,
TGA, optical microscopy, density and rheological properties. A substan
tial proportion of these oligomers possessed a microcrystalline charac
ter with a melting range between 0 and 50 degrees C. The amorphous par
t was liquid at room temperature and did not display a detectable glas
s transition upon cooling because of its wide molecular weight distrib
ution The viscous behaviour of suberin at room temperature was both pl
astic and thixotropic because of the structuring role of the microcrys
tals. (C) 1998 Elsevier Science Ltd. All rights reserved.