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Thermal and viscoelastic properties of some commercial starch products
Author(s) -
ContatRodrigo L.,
RibesGreus A.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.11794
Subject(s) - differential scanning calorimetry , materials science , polyethylene , viscoelasticity , starch , composite material , relaxation (psychology) , low density polyethylene , high density polyethylene , degradation (telecommunications) , polymer chemistry , chemistry , thermodynamics , organic chemistry , psychology , social psychology , telecommunications , physics , computer science
Three commercial starch products for polyolefins, marketed under the Mater‐Bi, Cornplast, and Bioefect trademarks, were subjected to an accelerated soil burial test. Their thermal and viscoelastic behaviors were studied by differential scanning calorimetry (DSC) and dynamic mechanical spectroscopy. Degradation in soil leads to more significant changes both in the DSC thermogram and the mechanical relaxation spectrum of Mater‐Bi. The relaxation spectra of Cornplast and Bioefect, two products containing polyethylene, basically coincide with that of pure low density polyethylene. The α‐relaxation zone of these starch products is the most affected by the degradation process. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1242–1251, 2003