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Morphological, thermal and mechanical properties of recycled HDPE foams via rotational molding

Content Provider	SAGE Publishing
Author	Dou, Yao Rodrigue, Denis
Copyright Year	2021
Abstract	In this study, foamed recycled high density polyethylene (rHDPE) parts were produced by rotational molding using different concentration (0 to 1% wt.) of a chemical blowing agent (CBA) based on azodicarbonamide. From the samples produced, a complete morphological, thermal and mechanical characterization was performed. The morphological analysis showed a gradual increase in the average cell size, while the cell density firstly increased and then decreased with increasing CBA content. As expected, increasing the CBA content decreased the foam density as well as the thermal conductivity. Although increasing the CBA content decreased both tensile and flexural properties, the impact strength showed a similar trend as the cell density with an optimum CBA content around 0.1% wt. Finally, neat rHDPE samples were also produced by compression molding. The results showed negligible differences between the rotomolded and compression molded properties indicating that optimal rotomolding conditions were selected. These results confirm the possibility of using 100% recycled polymers to produce rotomolded foam parts.
Related Links	https://journals.sagepub.com/doi/pdf/10.1177/0021955X211013793?download=true
Starting Page	305
Ending Page	323
Page Count	19
ISSN	0021955X
Issue Number	2
Volume Number	58
Journal	Journal of Cellular Plastics (CEL)
e-ISSN	15307999
DOI	10.1177/0021955X211013793
Language	English
Publisher	Sage Publications UK
Publisher Date	2021-04-29
Publisher Place	London
Access Restriction	Open
Rights Holder	© The Author(s) 2021
Subject Keyword	chemical blowing agent properties rotomolding High density polyethylene recycling
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Polymers and Plastics

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