The BIG question is, what triggers the biodegrade function?
Do you go to the product store, and find a pile of biodegraded sawdust?
Sawmills produce large amounts of sawdust, which they often just burn, but the cost of collecting it, and transporting it to a factory would probably outweigh its value. Therefore the next step would be to use wood directly from the forests, which are presently being decimated at an unprecedented rate, both by human predation, diseases, and forest fires.
Anything which increases this destruction, cannot be good, in spite of its ''Green'' intentions.
Virtually al the present plastics being discarded irresponsibly, are recyclable, so its not the actual product, but bad behaviour by humans that is the problem, and which needs to be corrected.

The biodegrading sounds excellent...so long as it doesn't happen in use. Could we be told about the duty life of items made with this plastic. For example a plastic garden chair: how long would it last in normal use?

Like @Worzel, I'm curious about what triggers the biodegrade. I'd like to drink my soda before the bottle starts to rot. But unlike @Worzel, I'm not alarmed about loss of forest area. For several decades, the reforestation of North America has kept pace with the demand for wood products (not counting pandemic effects). As to the rest of the world, the deforestation has been declining there, too. For reference see https://www.humanprogress.org/what-do-the-numbers-show-about-global-deforestation/

That is really cool, but what if you want your water bottles to last a long time (say as an emergency supply)?

My father helped build and maintain paper mills for a variety of companies in several countries and pretty much learned everything while only graduating from the 8th grade. The rest came from correspondence courses and pure on-the-job learning essentially earning the equivalent of a doctorate in chemical engineering. Given the opportunity after 46-years in the business, he could have come up with something similar if asked. It sounds like a cellophane derivative to me but I wouldn’t know since my knowledge base was in psychology. Never got to practice because of spinal cancer complications but life is like that. He was successful and I was not. Let’s see if they can make something of their “discovery” that actually gets applied in and benefits the real world.

Re comment by Worzel: "... the next step would be to use wood directly from the forests, which are presently being decimated at an unprecedented rate ...."
__ Pulpwood is grown as a farm crop. I have a farm which is all in Loblolly Pine, which is used for cardboard boxes, paper bags. etc.

Re Worzel,
According to NASA and accompanying satellite photos, the world is approximately ten percent greener now than it was twenty years ago.
Yes, there are some very severe issues in the Amazon basin, and also elsewhere, but overall the world’s forests are not, “being decimated at an unprecedented rate”.

Yay! Paper bags at the grocery store again!

Plastic should be banned soon. I suggest a Manhattan project to create plastics replacement. Now that we have a COVID vaccine why not put that brain power on a new project.

The idea of plastic grocery bags and bags for other consumer products thta will bio-degrade in land fills and eliminate that source of micro plastics is great. But how long would a plasti hulled kayak or boat last in sea water, or as others have asked, the durability of water and soft drink bottles. How long would those things last?
I personally like the technology where they collapse the cellular walls of wood fibers and compress the plywood to a fraction of its original volume and makes it a :plastic: moldable product. Being made of wood fibers and held together by the lignin of wood, it would be a bio friendly product that should last like wood and break down like wood by the same b acteria ad fungus that decays wood