Journal
POLYMER INTERNATIONAL
Volume 57, Issue 6, Pages 793-804Publisher
WILEY
DOI: 10.1002/pi.2420
Keywords
biodegradable polymers; biopolymers; composting; standards; life cycle analysis
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In recent years, biobased polymers have gained attention from industries, consumers and governments as a way to reduce municipal solid waste. Much attention has been given to their production and implementation. However, these materials only reach their potential environmental benefits when they are recovered through recycling or composting and/or their energy is recovered by incineration. These end-of-life scenarios allow closing the carbon cycle loop. A lot of confusion and misunderstanding about these new materials and their end-of-life scenarios, particularly composting, have been generated. This paper addresses definitions and environmental performance of these materials and their compostability. Current methods for measuring biobased content and biodegradability of polymers and factors affecting it, such as exposure conditions and polymer characteristics, are discussed, and the use of life cycle assessment as a tool to evaluate the environmental performance of biopolymers is presented. Although there are some obstacles for the growth and implementation of biobased polymers, such as consumer adoption and available composting facilities accepting these materials, new opportunities are growing due to government regulation and business initiatives in the past five years. However, consumers' understanding of when the use of these materials provides environmental benefits and when not is still missing. Therefore, to adopt and to implement these new biopolymers cooperative work among industry, consumers and government is needed. (C) 2008 Society of Chemical Industry.
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