Reinforcing a Thermoplastic Starch/Poly(butylene adipate-co-terephthalate) Composite Foam with Polyethylene Glycol under Supercritical Carbon Dioxide

Biodegradable foams are a potential substitute for most fossil-fuel-derived polymer foams currently used in the cushion furniture-making industry. Thermoplastic starch (TPS) and poly(butylene adipate-co-terephthalate) (PBAT) are biodegradable polymers, although their poor compatibility does not supp...

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Bibliographic Details
Published in:Polymers 2022-12, Vol.15 (1), p.129
Main Authors: Chang, Chih-Jen, Chandrasekar, Jayashree, Cho, Chia-Jung, Venkatesan, Manikandan, Huang, Pin-Shu, Yang, Ching-Wei, Wang, Hsin-Ta, Wong, Chang-Ming, Kuo, Chi-Ching
Format: Article
Language:English
Subjects:
Biodegradability
Bioplastics
Butylene
Carbon dioxide
Compatibilizers
Cushions
Density
Hot pressing
Impact strength
Mixtures
Molecular weight
Plastic foam
Plastics
Polyesters
Polyethylene glycol
Recycling (Waste, etc.)
Taiwan
Tensile properties
Tensile strength
Terephthalate
Thermoplastics
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Summary:Biodegradable foams are a potential substitute for most fossil-fuel-derived polymer foams currently used in the cushion furniture-making industry. Thermoplastic starch (TPS) and poly(butylene adipate-co-terephthalate) (PBAT) are biodegradable polymers, although their poor compatibility does not support the foam-forming process. In this study, we investigated the effect of polyethylene glycol (PEG) with or without silane A (SA) on the foam density, cell structure and tensile properties of TPS/PBAT blends. The challenges in foam forming were explored through various temperature and pressure values under supercritical carbon dioxide (CO ) conditions. The obtained experimental results indicate that PEG and SA act as a plasticizer and compatibilizer, respectively. The 50% (TPS with SA + PEG)/50% PBAT blends generally produce foams that have a lower foam density and better cell structure than those of 50% (TPS with PEG)/50% PBAT blends. The tensile property of each 50% (TPS with SA + PEG)/50% PBAT foam is generally better than that of each 50% (TPS with PEG)/50% PBAT foam.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15010129