Cork suberin as a new source of chemicals: 2. crystallinity, thermal and rheological properties

Cordeiro, N.; Belgacem, N.M.; Gandini, A.; Neto, C. Pascoal

http://hdl.handle.net/10400.13/3371

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
Cork suberin as a new source of chemicals 2. Crystallinity, thermal and rheological properties.pdf		541.63 KB	Adobe PDF	Download

Send Feedback

Authors

Abstract(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.

Keywords

Cork of Quercus suber L. Alkaline methanolysis Suberin Thermal characterization Rheological properties Crystallinity Density . Faculdade de Ciências Exatas e da Engenharia

URI

http://hdl.handle.net/10400.13/3371

Citation

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.