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Starch‐Based Biodegradable Materials Suitable for Thermoforming Packaging
Author(s) -
Av?rous Luc,
Fringant Christophe,
Moro Laurence
Publication year - 2001
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/1521-379x(200108)53:8<368::aid-star368>3.0.co;2-w
Subject(s) - thermoforming , materials science , composite material , extrusion , starch , polyester , modulus , glass transition , dynamic mechanical analysis , polymer , biochemistry , chemistry
In previous works, we had shown that blending plasticised wheat starch (PWS) with biodegradable polyesters improves properties such as the water resistance. The present study was more specifically based on PWS/cellulose fibres composites. In addition, these multiphase systems (blends and composites) have been tested with respect to thermoforming applications. The composites shown an increase in modulus and strength, improved temperature stability and glass transition shifts. After sheet extrusion, each type of materials (blends and composites) was thermoformed. The ageing of the resulting thermoformed trays was tested in storage conditions from 4°C to ambient temperature, composites based‐materials show reduced ageing compared to PWS.