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The origin and role of structural inhomogeneities and impurities in material recycling of plastics
Author(s) -
Pospíšil Jan,
Horák Zdenêk,
Kruliš Zdenêk,
Nešpůrek Stanislav
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981350127
Subject(s) - polymer , impurity , materials science , matrix (chemical analysis) , composite material , material properties , chemical engineering , organic chemistry , chemistry , engineering
Characteristics of aged polymers intended for material recycling are emphasized. Specific material properties of aged recyclates, containing new functional groups formed during processing and first‐life application (structural polymer inhomogeneities) and metallic compounds, pigments or compounds generated from additives (non‐polymeric impurities), are considered from the point of view of their influence on the aging resistance in the second‐life applications. Chemical transformations of the polymer matrix together with consumption of stabilizers deteriorate material properties of collected waste plastics in reprocessing and subsequent outdoor applications.