Article outline
The production and properties of polylactide composites filled with expanded graphite
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Abstract
Composites
have been produced by melt-blending biodegradable polylactide (PLA)
with commercially available expanded graphite (EG). Using different
techniques of addition, the manifold effects of EG on PLA molecular,
thermo-mechanical and fire-retardant properties were evaluated. The EG
nanofiller provides PLA composites with competitive functional
properties. They have a high rigidity, with Young's modulus and storage
modulus increasing with EG content. They also have excellent thermal
stability while preserving the glass transition and melting temperature
of the original PLA matrix. Purification and pre-dispersion of EG
nanofiller proved beneficial for preserving PLA molecular weights and
led to improved mechanical performance. The presence of dispersed
graphene nanolayers in PLA significantly accelerated the polyester
crystallization process. The flame retardant properties also displayed
improvements with a large decrease in the maximum rate of heat release
as recorded by cone calorimetry, whereas the horizontal burning test
(UL94 HB) was successfully passed revealing non-dripping and char
formation.
Keywords
- Poly(lactic acid);
- Composites;
- Expanded graphite;
- Degradation;
- Thermal properties;
- Mechanical properties;
- Fire retardancy
Copyright © 2010 Elsevier Ltd. All rights reserved.
Related book c
Article outline
The production and properties of polylactide composites filled with expanded graphite
Choose an option to locate/access this article:
Check if you have access through your login credentials or your institution
Check accessAbstract
Composites
have been produced by melt-blending biodegradable polylactide (PLA)
with commercially available expanded graphite (EG). Using different
techniques of addition, the manifold effects of EG on PLA molecular,
thermo-mechanical and fire-retardant properties were evaluated. The EG
nanofiller provides PLA composites with competitive functional
properties. They have a high rigidity, with Young's modulus and storage
modulus increasing with EG content. They also have excellent thermal
stability while preserving the glass transition and melting temperature
of the original PLA matrix. Purification and pre-dispersion of EG
nanofiller proved beneficial for preserving PLA molecular weights and
led to improved mechanical performance. The presence of dispersed
graphene nanolayers in PLA significantly accelerated the polyester
crystallization process. The flame retardant properties also displayed
improvements with a large decrease in the maximum rate of heat release
as recorded by cone calorimetry, whereas the horizontal burning test
(UL94 HB) was successfully passed revealing non-dripping and char
formation.
Keywords
- Poly(lactic acid);
- Composites;
- Expanded graphite;
- Degradation;
- Thermal properties;
- Mechanical properties;
- Fire retardancy
Copyright © 2010 Elsevier Ltd. All rights reserved.
Related book con
Article outline
The production and properties of polylactide composites filled with expanded graphite
Choose an option to locate/access this article:
Check if you have access through your login credentials or your institution
Check accessAbstract
Composites
have been produced by melt-blending biodegradable polylactide (PLA)
with commercially available expanded graphite (EG). Using different
techniques of addition, the manifold effects of EG on PLA molecular,
thermo-mechanical and fire-retardant properties were evaluated. The EG
nanofiller provides PLA composites with competitive functional
properties. They have a high rigidity, with Young's modulus and storage
modulus increasing with EG content. They also have excellent thermal
stability while preserving the glass transition and melting temperature
of the original PLA matrix. Purification and pre-dispersion of EG
nanofiller proved beneficial for preserving PLA molecular weights and
led to improved mechanical performance. The presence of dispersed
graphene nanolayers in PLA significantly accelerated the polyester
crystallization process. The flame retardant properties also displayed
improvements with a large decrease in the maximum rate of heat release
as recorded by cone calorimetry, whereas the horizontal burning test
(UL94 HB) was successfully passed revealing non-dripping and char
formation.
Keywords
- Poly(lactic acid);
- Composites;
- Expanded graphite;
- Degradation;
- Thermal properties;
- Mechanical properties;
- Fire retardancy
Copyright © 2010 Elsevier Ltd. All rights reserved.
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