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Cork suberin as a new source of chemicals: 2. crystallinity, thermal and rheological properties
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Orientador(es)
Resumo(s)
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 sub stantial proportion of these oligomers possessed a
microcrystalline character with a melting range
between 0 and 50°C. The amorphous part was liquid
at room temperature and did not display a detectable
glass transition upon cooling because of its wide
molecular weight distribution. The viscous behaviour
of suberin at room temperature was both plastic and
thixotropic because of the structuring role of the microcrystals.
Descrição
Palavras-chave
Cork of Quercus suber L. Alkaline methanolysis Suberin Thermal characterization Rheological properties Crystallinity Density . Faculdade de Ciências Exatas e da Engenharia
Contexto Educativo
Citação
Cordeiro, N., Belgacem, N. M., Gandini, A., & Neto, C. P. (1998). Cork suberin as a new source of chemicals: 2. crystallinity, thermal and rheological properties. Bioresource technology, 63(2), 153-158.
Editora
Elsevier