no bags are PP or PE not PS plastics. EPS (Expanded Polystyrene) foam. Milky thick eps crashed out of the slurry and the acetone was absorbed into the water. is the fact i have at least one friend who is allergic to lavender and id hate for my project to cause them extra stress if they were to stop by. Construction adhesives will melt with 2 lb. Does this work with plastic bags too? It’s self sticky and very thick, but it is handleable, (standard disclaimers for solvents on skin, gloves are not a great solution, because the stuff sticks more to them than skin) and shapes like putty, i kneaded it a bit to get out the water/acetone, and proceeded to leave one blob to dry, and one blob mushed into a small mold and i will see how it dries. dirt falls out to the bottom and can be dumped/composted. Theoretical mix RA of 3.8 (lower= better), But 25% d'limonene to 75% M.E.K has a theoretical RA of 3.7. Medium . this year i embarked in using it on dirty, dusty, food stained plastics, and while you wont get a perfect end result its pretty good. Share it with us! "When you mix Styrofoam (extruded polystyrene) with gasoline, the Styrofoam breaks down. I really need to get rid of those bags! It can be molded or used as a glue or sealant. Does it harden to action figure level hardness? It can be molded and formed. on Step 5. It would take direct contact with a heated metal implement for me to see melting. It takes at least 500 years to decompose. If everyone just did this step, and digested down all the packing styrofoam they get we could save a bunch of landfill space. If left out to dry, it gets hard again, but not like before, without the air - it resembels plastic." Napalm is the generic name for the mixture of a flammable petroleum substance, typically diesel gasoline, with a thickening or gelling agent to give the fiery substance “sticky” properties. Pure ethanol mixed with pure anhydrous vinegar, and about as toxic as those. An eye-popping 46,000 pieces of plastic float on every square mile of ocean! And stay that way at elevated heat (80F and plenty of circulation for months.) Can't recall if they dissolve in acetone/limonene,) or distil off and recover the acetone, and see if we can do it again. Rub sandpaper over these surfaces to add a little more subtle surface texture. Of course, until these new options are widely available, it's best to avoid using Styrofoam cups when possible. (which may be useful for some resuses). 1 year ago For a faster drying but still low toxicity solvent, I'm also having good luck with ethyl acetate. The Ottoman: Styrofoam shipping containers are almost exactly the same size as your typical ottoman, so why not make one of your own.It can be as simple as adding some fabric with pins and glue… but rollers and legs are also possibilities. When polystyrene is sent to the landfill, it is quickly covered and this process deprives it of water and oxygen, which would normally help it to break down. Many possibilities here. I am a little obsessed with “melting” styrofoam lately. Styrofoam boards are used for insulation in buildings, in roads, and by florists, to name a few. Cons, very long dry time. Styrofoam litters the oceans. but i do hear you need a fair amount of peels/mint to make much limonene. sent you an email reply. It’s also not the easiest thing to … ‘Maker Goop’ Can be handy for making small plastic parts, castings, or just to make the EPS a flowable product for makers, or for Recyclers which could have the solvents extracted and reused commercially, or burned (as is done in the EU for power. The  end effect is that the mass of polystyrene breaks apart releasing the trapped air, and forms into a mass of new hydrocarbon chains, which forms some fort of amorphous solid, a slimy film of the Ethane-styrene bonded chains and gasoline. (verrrrry long transition, can take months to feel like thick rubber. White gas/ Naphthalene: works to degas and shrink it to some degree but does not soften or melt the EPS. Is this a problem to take into consideration?Thanks for sharing. Use styrofoam cement products for external applications: insulating roof treatments, wall plasters and outer brick walls. the blue in the above photos was from Insulation foam thich started out light blue, but went dark blue as it melted and lost all the air bubbles.. Once the air has all bubbled out of your solvent/eps bucket. In 10 months since the ban  there is little to suggest that  the new decree will bring about much change. Below are some notes on my experiments on found on Degasifying the EPS (EPS is 90-99% empty space, and 1%-10% Polystyrene. I hear lavender oil can also work. I'm curious about a need for a lid for the bucket used to melt the EPS. I am cringing a little … Continue reading "Faux Metal Letters Made From “Melted” Styrofoam" Have you found a way to re-expand it into foam in a new shape? Toluline: works much like limonene stinkier but faster has many more health risks. Common polystyrene products include disposable razors, plastic yogurt containers, plastic mailers, and CD jewel cases. The streets of the capital region are awash in styrofoam. 'Melting' the EPS, starts with breaking it up into chunks that you can put into your bucket, and then simply adding a few ounces of D-limonene solvent to the bucket and then start feeding EPS into it and let it dissolve in the process the gasses in the foam will bubble out. I have also not investigated only using acetone vapors, perhaps a bucket with a pie tin in it with acetone under it, and ps, and a lid. I had a bit of the soup and then got scared. We have only tried with traditional chemical products and the results are good but very toxic and that is not what we are looking for. Limonene sadly is not water absorbable so not sure how mixes of acetone/limonene will work, and results of drying lomonine under water have lead to very milky results and super slow drying time. and then its a pretty simple "essential oil" distilation. Does kneeding cause more bubbles? Expanded polystyrene foam, commonly referred to as styrofoam, is one of the most common materials used in a wide variety of applications – from appliances … When you mix Styrofoam (extruded polystyrene) with gasoline or acetone, the Styrofoam breaks down. I can't say my vacuum chamber experiments really helped. a junkable spoon or spatula. EPS (Expanded Polystyrene) foam. a little more brittle than action figures, but over the span of about a month or two in good ventalation unless suepr thick (like more than a inch thick) they will harden to a resin like plastic hardness. I love to upcycle and reuse old stuff but I get particulary excited when I find new ways to use trash that I have previously not been able to upcycle. Other experiment notes and links: Tried this mix, using a 50ml test tube filled it with 43ml acetone and about 7ml limonene, and absorbed EPS until it stopped accepting more. Just use it until all of the visible beads are melted and the surface looks like a craggy rock. but here is a public one too. As those melted surfaces come into contact with each other and solidify, they do form a strong, though somewhat deformed joint. but may take a bit of time to really cure. I am from Chile and with my thesis group we are trying to do something about the EPS that is polluting all the coasts in the south of my country. Now she and her roommates subsist on salty soups in Styrofoam containers that they heat in the communal microwave. Acetone: Works great, turns it into a slurry of dissolved polystyrene that will eventually evaporate thicken and then finally harden, most of the gas is lost, but the acetone gets trapped eventually and blows bubbles into the slowly solidifying stuff, making it bubbly and less than ideal to cast with. I want to know more about D-Limonene and if you have used it with dirty EPS, is it a 100% natural product, what kind of product do you imagine we could do with it to contribute the local communities that are being affected by this problem? I had good luck with some pressed lemon oil, rather than the purified d-limonene. Faux Metal Letters Made From “Melted” Styrofoam. (EPS floats, so it will only touch the solvent on the bottom, ideally you want to use as little solvent as needed to get the job done, i usually added about 20 cc's of limonene per 4 cubic feet or so of EPS. you can use just about any 'styrofoam' except the starch peanuts. when done remove them from the heat, depending on how flexible/solventfull the starting material is, you may be able to demold it right away once it cooled, but it may be squishy still. on Step 6. https://www.ebay.com/itm/D-Limonene-100-FOOD-GRAD... https://www.cnn.com/2018/03/09/world/miranda-wang-... Altair - a Tripod Mounted Refracting Telescope, https://sites.uci.edu/chem52labs/files/2016/10/M52LA_Exp5_F16UP2.pdf. When acetone is used as a solvent, the expanded polystyrene will easily dissolve and you’ll be left with a liquid acetone/polystyrene solution. Next time heat the soup in a glass or ceramic container or microwave safe cookware. link to ebay seller of good quality 99% pure limonene i used. Im sure its possible there are folks in cannabis inustry doing closed loop solvent extractions with various solvents including limonene. Question please keep me posted on any successes/failures. Since Styrofoam is mostly air, you may be surprised by how much (or, in the end, how little) foam will dissolve in the acetone. If you have any more information, pictures or experiments you have tried it would help us. If left out to dry, it gets hard again, but not like before, without the air - it resembels plastic." I’ve never heard of that. The styrofoam was melted by using acetone and the produced fibers were varied in diameter. Polystyrene is an aromatic hydrocarbon, it has several complicated double covalent bonds and is a chain of styrene molecules (C6H5CH=CH2) which is very unsaturated. All the air inside escapes, and it becomes a wet, gooey mess. Expanded polystyrene foam, commonly referred to as styrofoam, is one of the most common materials used in a wide variety of applications – from appliances … The average diameter of the styrofoam fibers was 8 µm. While it is a goo is it is very sticky and can be used as a glue or sealant. Or 21% Xyline to 79% acetone gets us down to ra of 3.2 which is the best i've pulled from the above table. Xyline: also dissolves the product fast, but takes a good long time to dry, and is stinky and bad for many reasons. Thank you for your time! Sofar. i have found the EPS and limonene will float on water, so you can pour several cups of water in, to the bucket first. but have not tried it. What most people refer to as “Styrofoam” is simply generic expanded polystyrene foam, often used for things like coffee cups, food trays, coolers and different types of packaging material. One other thing that keeps me from doing a larger scale trial with lavender essential oils. This article explains about top 10 styrofoam recycling tips in details. Plastic storage containers not intended for use in a microwave oven can warp or melt allowing dangerous chemicals to leak into food. The Process of Styrofoam Recycling . Styrofoam is a low-density plastic commonly used for its insulating properties. The slow drying time is a disadvantage of the Limonene, but it being nontoxic, biodegradable, renewable, and pleasantly citrus scented, are a good trade off for the slow thickening time. https://www.hansen-solubility.com/HSP-science/sol... Looks like 87% d-limonene to 13% Acetone by volume should do the best melt. rather than doing batches emptying the whole bucket as i did during a lot of my experiments. I also found that if you use a 5 gallon bucket or larger you can put about a gallon of water in first, and all the Limonene floats, as does the polystyrene. 9 years ago. 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