Take a look around you. How many objects around you have plastic parts? Plastic is now omnipresent in our lives, from our cutlery to our accessories, our toys to our most advanced technology. It’s in our lunchboxes, bathrooms, kitchens and closets, gardens, toolsheds, and even our bedrooms. It’s given us so much in the 80 years it’s been available, and allowed us to learn the true meaning of convenience-having everything cheap, readily available, and good to take anywhere. You’d think we should be grateful for all plastic has done for us, but plastic has a downside too. Plastic products were created to help us-but unlike other materials, plastics don’t degrade and disappear after we’re done using them.
Here are some facts and history about plastic products, so that you have a good understanding of why they are an important topic in ocean literacy. Tomorrow, we will be providing you with activities and materials you can use at home or in the classroom about plastics and the marine environment.
Are there ways to stop using plastic? It is difficult, but the answer is yes. On Thursday, we will provide you with some resources you can use to begin living a less plastic filled life. We will also be talking about how you as a consumer can help influence producers to reduce their use of plastic, so that you can get more of what you want, without plastic guilt!
FACTS ABOUT PLASTICS:
What is Plastic?
From Dictionary.com: Plastic is defined as: "any of a group of synthetic or natural organic materials that may be shaped when soft and then hardened, including many types of resins, resinoids, polymers, cellulose derivatives,
casein materials, and proteins. [Plastics are] used in place of other materials, [like] glass, wood, and metals, in construction and decoration, for making many articles, as coatings, and drawn into filaments, for weaving. They are often known by trademark names, as Bakelite, Vinylite, or Lucite."
How is plastic created?
Plastic is an inorganic, man made compound that is most often produced as a byproduct of oil or petrochemicals. Each plastic type is different, but all plastics are essentially chains (polymers) of carbon-based units known as monomers. The monomers, or repeating molecular units, of plastic often contain carbon along with hydrogen, sulfur or oxygen or nitrogen. The combinations of these elements into linking chains determines the type of plastic produced, and it's associated properties.
How many types of plastic are there?
The amazing thing about plastics is that they can be used for so many things. Plastics can be made to suit almost any purpose, which means that there are hundreds of different types and subtypes of plastic in the world.
There are two main categories of plastics: Thermoplastics (plastics that can be melted and remelted to return to their original state) and Thermosets (plastics that are set using heat into one particular shape and cannot change form. Read more about these categories on the How Stuff Works blog.
Because there are so many types of plastics, The Society for Plastics Industry developed a categorization system to help broadly identify the type of plastic used in products you might purchase or have in your home.
You probably recognize the symbol they chose to help define the category- it looks an awful lot like the recycling symbol, right?
Despite all plastics in the home bearing this symbol, it's presence on the products doesn't necessarily denote that a container is recyclable. Learn about what these symbols really mean on The Daily Green blog.
How is plastic recycled?
How is plastic recycled?
Check out the Wisegeek blog for more details on this process.Thermoplastics that are used for household products can be broken down, cleaned,melted, and recycled into preproduction pellets, known as "nurdles". These nurdles can then be remixed and used to create new products, like fleece, carpeting, and constuction materials. Plastics can now even be used to make useful things like jeans, chairs and even bridges.
What is the future of plastics?
Plastic is now a cultural addiction, and it's starting to show. Plastic can now be found even in the most remote environments on earth, and has become a serious problem.
Solutions are starting to emerge though.
Akinori Ito, founder of Blest Corp. in Japan, has developed a portable machine that takes plastic and converts it back into oil, so that it can be used again.
Thermoset plastic refuse can also be used to recreate petroleum products. Companies like Algylix are able to take used plastics from garbage dumps and landfills, and create useable crude oil from them. This may revolutionize the way we recycle in the future!
We'll have more on plastics and what they are doing in our environment tomorrow, along with ways you can teach your community about them. Stay tuned!