The influence of miscibility and micro - structure on the surface defects of some starch bio – hybrides

0360629 - ÚMCH 2012 RIV RO eng J - Článek v odborném periodiku
Dimonie, D. - Kelnar, Ivan - Socoteanu, R. - Darie, R. N. - Pop, F. S. - Zaharia, C. - Petrea, C. - Nemteanu, M. - Coserea, R. M.
The influence of miscibility and micro - structure on the surface defects of some starch bio – hybrides.
Materiale Plastice. Roč. 47, č. 4 (2010), s. 486-491. ISSN 2668-8220. E-ISSN 0025-5289
Výzkumný záměr: CEZ:AV0Z40500505
Klíčová slova: polyvinyl alcohol * starch * multilayered silicate
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 0.873, rok: 2008
http://www.revmaterialeplastice.ro/pdf/DIMONIE%20D.pdf%204%2010.pdf

The paper presents the effects of the miscibility and of the micro-structure on the surface defects of some bio – hybrides based on starch, polyvinyl alcohol (PVOH) and multilayered silicates. At macroscopic level (100μ) the studied starch bio-hybrids seem to be compact materials. If these materials are analysed at a microscopic level (10 μ) depending on their type surface defects like voids, cracks and fractures can be observed. These defects are not a consequence of a poor miscibility, even in case of bio-hybrids that contain untreated silicate. These defects appear because of the bio-hybrids micro-structure. As the new bio – hybrids are probably disorderly ones, it can be estimated that the surface defects appear as a consequence of a poor distribution of the swollen silicate tectoids into the polymeric matrix, possibly as a consequence of the improper melt processing conditions.
Trvalý link: http://hdl.handle.net/11104/0198136