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Print 19 comment(s) - last by Seemonkeyscanf.. on Feb 19 at 1:19 PM

Don't just toss that plastic food container in the garbage!

The problem with plastics is that once they come into existence, they don't really just go away. This is great for things like electronics casings, reusable food containers and guitar parts, but when it comes to disposable packaging, not so much. Your average petroleum-based plastic clogs landfills and uses up valuable fossil fuel resources that could be either saved or put to use elsewhere. Even the most popular biorenewable plastic, polyactide, has to be rendered down in industrial facilities, adding to its overall cost.

Researchers at Imperial College London set out to create a real biorenewable plastic that didn't require a lot of energy to create or destroy and didn't use active food crops as a source of material. Their new polymer material is made from sugars called lignocellulosic biomass. This type of biomass can come from anything from non-food crops to agricultural waste to saw mill discards.

The process to make the new plastic has taken the group, led by Professor Molly Stevens of ICL, three years to bring up to 80% efficiency. But where polyactide requires a large amount of energy and water to produce, the ICL plastic is the opposite. Further, polyactide uses food crop like corn and sugar beet for its prime ingredients, causing concern from many over the use of viable food sources in creating non-edible products.

But the best part about the ICL plastic is that it doesn't require any high energy process to break down. Its oxygen-rich structure absorbs water and biodegrades the structures into harmless components. This means to safely discard the material, all a consumer has to do is toss it on their compost pile. And if you don't have a compost pile, that's fine -- it will breakdown just as well in a landfill if exposed to the elements.

This plastic doesn't only show promise for packaging materials though. A group of several parties, including at least one commercial entity, brought together by Stevens is looking into ways the polymer may be useful in medical capacities such as stitches and tissue regeneration scaffolding. Another use may be controlled drug delivery as the plastic also breaks down into harmless compounds in the body.



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Quality Street
By jamdunc on 2/18/2010 9:05:31 AM , Rating: 3
For any of you over here in the UK, the outer 'plastic' wrappers on Quality Street (and some other products) have been compostable for a while so not sure what this 'new' research brings to the table.

The wrappers used by Nestle are actually made from wood pulp if I remember correctly, so are ICL really on the ball?




RE: Quality Street
By bhieb on 2/18/2010 9:15:18 AM , Rating: 2
quote:
The wrappers used by Nestle are actually made from wood pulp if I remember correctly


If that were true (not saying it is I have no idea) could they really call them "plastic". A wood based product says "paper" to me.


RE: Quality Street
By LRonaldHubbs on 2/18/2010 11:21:05 AM , Rating: 3
Plastic describes the material properties, not the chemical composition. If material has properties similar to those of other materials that we normally call plastics, then it is in fact a plastic, regardless of whether it is made from petroleum or not.


RE: Quality Street
By MarcLeFou on 2/18/2010 9:20:26 AM , Rating: 3
This tech has indeed been around for a few years.

3-4 years ago, I used to represent for a Canadian Garbage bag company using an oxybiodegredable process for their plastic bags for the foodservice trade.

The bags would fully decompose in a landfill in less than 2 years.

Unless this process is about the production side where its more energy efficient, this new "breakthrough" really doesn't appear to be one.


RE: Quality Street
By stirfry213 on 2/18/2010 1:13:14 PM , Rating: 2
The article acknowledges the existance of similar products:

quote:
Even the most popular biorenewable plastic, polyactide, has to be rendered down in industrial facilities, adding to its overall cost.


The article also acknowledges the benefits of this particular product being cheaper to produce:

quote:
Researchers at Imperial College London set out to create a real biorenewable plastic that didn't require a lot of energy to create or destroy and didn't use active food crops as a source of material.


Reading comprehension FTL...


RE: Quality Street
By MarcLeFou on 2/19/2010 12:28:08 AM , Rating: 2
As I've mentionned in my previous comment, the product I was selling did NOT need to be processed in a plant when thrown out, just thrown into a landfill where water, sun and gases would do their job.

Thus, my initial question still stands : is this simply a more energy efficient way to produce these or simply a biased press release ?


RE: Quality Street
By dflynchimp on 2/18/2010 9:20:40 AM , Rating: 2
Yeah, when I was in Taiwan they offered biodegradeable plastic bags at any local convenience stores for an extra 1TWD (about 3 cents). It's a surprise really that with all the green craze here in the U.S this hasn't come sooner.


RE: Quality Street
By markitect on 2/18/2010 11:46:58 AM , Rating: 2
Not to mention wax paper, which has been around for even longer.


RE: Quality Street
By nvalhalla on 2/18/2010 1:10:40 PM , Rating: 2
What's new is that the old biodegradable plastics were apparently made of edible food sugars, corn syrup and the like. This stuff is made from cellulosic, inedible food waste. That's a pretty big breakthrough and should allow this type of plastic much broader adoption.


RE: Quality Street
By jamdunc on 2/18/2010 5:56:39 PM , Rating: 2
No the Quality Street wrappers are made by a company called Innovia and their wrappers are cellulose based, which is basically in every plant and tree, hence why I said wood based earlier. Link below to the company's website:

http://www.innoviafilms.com/products/market/biodeg...


Old news...
By roostitup on 2/18/2010 9:42:05 AM , Rating: 4
These plastics have been around for years. No news here!




RE: Old news...
By Seemonkeyscanfly on 2/18/2010 12:39:04 PM , Rating: 2
Yea, but if they were not used in the USA before now they never existed.... :P

(sarcasm of course)

I always wonder why something like this that is good and useful (at least much better then other options) takes so long to make it's way around the world.


RE: Old news...
By roostitup on 2/18/2010 9:28:18 PM , Rating: 2
I live in the US and was buying this plastic years ago :)


yea, but is really scary...
By Seemonkeyscanfly on 2/18/2010 9:30:28 AM , Rating: 2
If left on a shelve a hostess Twinkie will last longer then the plastic wrapper it comes in.... and still soft.




RE: yea, but is really scary...
By seamonkey79 on 2/18/2010 7:26:03 PM , Rating: 2
urban legends FTW


By Seemonkeyscanfly on 2/19/2010 1:19:04 PM , Rating: 2
Not really, Just leave one sit on your counter (away from kids and twinkie-holics... After a few months in the open air you will see no mold. Of course I'm assuming you do not keep spraying water on it... just normal open air.

Another fun trick with Twinkies... try setting the on fire. They will blacken but they will not burn... You can use blow torch and it will not burn. P.S. remove from plastic first of course.


By amanojaku on 2/18/2010 10:03:24 PM , Rating: 3
Or don't care?
quote:
“Our key breakthrough was in finding a way of using a non-food crop to form a polymer, as there are ethical issues around using food sources in this way,” said Williams. Current biorenewable plastics use crops such as corn or sugar beet.
Yes, it's true biodegradable plastics have been around for years. There are various types, the most common of which is derived from food sources. This creates a few negative effects:

1) Food prices go up
2) Excessive farming causes soil degradation
3) Plastic production costs go up

The new plastic can be made from trees or grass, as well as garbage. Can't get much cheaper materials than that. The process to create the new plastic uses less water than the current one, which means more money saved. And the plastic can be thrown in the garbage, which means no need to recycle. Recycling is government funded, which means your taxes.

The breakthrough is that this could be a CHEAPER biodegradable plastic, and could save you money since everything you buy comes with some kind of plastic. Of course, they said the same thing about offshoring...




Uh...
By Motoman on 2/18/2010 11:56:34 AM , Rating: 2
quote:
And if you don't have a compost pile, that's fine -- it will breakdown just as well in a landfill if exposed to the elements.


...if I'm not mistaken, this stuff (or stuff really similar) has been around for a while - and when it goes in a landfill, it's not "exposed to the elements" anymore - unless it's on the surface. Then it just sits in the landfill practically forever anyway. Like newspapers from the 1950s that are still legible now once dug back up...




By tygrus on 2/19/2010 9:15:23 AM , Rating: 2
How quickly does it breakdown if wet and put on back seat of car (>60C in car). Wrapper for pies in oven ? Low permeability to protect contents ?




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