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Assessing the Environmental Sustainability of Food Packaging: An Extended Life Cycle Assessment including Packaging-Related Food Losses and Waste and Circularity Assessment

Biodegradable Foam Cushions as Ecofriendly Packaging Materials

School of Mechanical Engineering, Yonsei University, Seoul 03722, Korea
Author to whom correspondence should be addressed.
Sustainability 2019, 11(6), 1731;
Received: 7 February 2019 / Revised: 19 March 2019 / Accepted: 19 March 2019 / Published: 21 March 2019
(This article belongs to the Special Issue Sustainable Materials for Food Packaging)
In this work, a high-magnification extrusion-foaming technique for biomass-based biodegradable composite materials using water vaporization was examined. Starch was selected as the biomass and polylactic acid was selected as a biodegradable matrix resin. No additional plasticizer or additives were used in this extrusion-foaming process. The foaming ratio was deduced according to the conditions of the extrusion-foaming process to confirm the forming characteristics of the foaming materials. Scanning electron microscopy was performed to examine the morphology of the composite foam. To investigate the potential of the foam cushion as an ecofriendly packing material, we conducted experiments on its static compression and dynamic cushioning properties and examined whether its biodegradability could be controlled by varying the mixing ratio of the materials. Thus, we developed a water-foaming process that is ecofriendly and whose products can be recycled as compost after use. View Full-Text
Keywords: biomass; starch; polylactic acid; extrusion; foaming process; foam cushion biomass; starch; polylactic acid; extrusion; foaming process; foam cushion
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MDPI and ACS Style

Sohn, J.S.; Kim, H.K.; Kim, S.W.; Ryu, Y.; Cha, S.W. Biodegradable Foam Cushions as Ecofriendly Packaging Materials. Sustainability 2019, 11, 1731.

AMA Style

Sohn JS, Kim HK, Kim SW, Ryu Y, Cha SW. Biodegradable Foam Cushions as Ecofriendly Packaging Materials. Sustainability. 2019; 11(6):1731.

Chicago/Turabian Style

Sohn, Joo Seong, Hyun Keun Kim, Shin Won Kim, Youngjae Ryu, and Sung Woon Cha. 2019. "Biodegradable Foam Cushions as Ecofriendly Packaging Materials" Sustainability 11, no. 6: 1731.

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