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Characterization by thermal analysis of high density polyethylene/polypropylene blends with enhanced biodegradability
Author(s) -
ContatRodrigo L.,
RibesGreus A.,
Imrie C. T.
Publication year - 2002
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.10941
Subject(s) - high density polyethylene , polypropylene , materials science , differential scanning calorimetry , thermogravimetric analysis , polyethylene , thermogravimetry , composite material , characterization (materials science) , polymer blend , thermal analysis , dynamic mechanical analysis , degradation (telecommunications) , low density polyethylene , chemical engineering , polymer chemistry , polymer , thermal , copolymer , thermodynamics , telecommunications , physics , computer science , engineering , nanotechnology
Abstract Blends of high density polyethylene (HDPE) and polypropylene (PP) with different biodegradable additives have been subjected to an outdoor soil burial test. The effect of the degradation process on the structural and morphological properties of the samples has been studied by thermogravimetry, differential scanning calorimetry, and dynamic‐mechanical spectroscopy. The thermogravimetric results show that the additive is more affected by the degradation process than the polymeric matrix. Changes both in the crystalline morphology and the activation energies of the relaxation processes take place in different stages, and can be described using polynomial equations. These changes occur on different time scales depending on the additive used. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 174–185, 2002