With the enhancement of global environmental protection awareness, new eco friendly packaging materials have gained more and more attention since the new century. Starch is one of the most potential natural biodegradable materials due to its abundant source, low price, and completely degradable characteris tics. Starch-based materials with excellent biodegradability can be widely used by improving their properties.
They are not useful as they have poor barrier and mechanical properties* and as most plastic ends up on landfill their alleged biodegradability is irrelevant. Landfills are designed to inhibit biological activity.
It is unfortunate that those pursuing such plastics are so profoundly ignorant of the practical aspects involved.
*https://www.sciencedirect.com/science/article/abs/pii/S2214799320301107
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