Application progress of biodegradable plastic foam prepared by supercritical fluid foaming
The improper production,use,and recycling of plastic products lead to energy resource waste and environmental pollution.Promoting the use of biodegradable plastics as alternatives is one of the crucial approaches to address plastic pollution.Currently,biodegradable plastics are mainly utilized in disposable items such as films and straws,with limited applications in the larger-scale buffer packaging sector.In recent years,the application progress of green and environmentally friendly supercritical fluid foaming technology in preparing biodegradable foam materials has attracted attention from both academia and industry.The application progress of supercritical fluid foaming in the preparation of biodegradable plastic foam was summarized.The foaming processes,structural properties of biodegradable foam materials prepared by batch foaming,extrusion foaming,injection foaming and bead foaming were briefly described.The research status of foam materials based on polylactic acid,poly(butylene adipate-co-butylene terephthalate)and poly(butylene succinate)was reviewed.
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