Alexei Volkov
Acetone, also known as dimethylketone or propanone, is a commonly used and relatively inexpensive solvent. It is often used to dissolve plastics. However, it is important to note that acetone can only dissolve certain types of plastics, and its effectiveness depends on the chemical composition of the plastic in question. The solubility of plastics in acetone is determined by the like dissolves like rule, which is further elaborated by the Hansen solubility parameters. These parameters predict solubility by calculating the relative energy difference between two molecules in a 3D space based on their dispersion forces, intermolecular forces, and hydrogen bonding.
| Characteristics | Values |
|---|---|
| Plastics dissolved by acetone | Polystyrene, ABS, Acrylics (Perspex/PMMA), Acetal |
| Effect on plastic | Softening, smearing, dissolving |
| Plastic bottle safety | Acetone is sold in metal containers, but some companies sell acetone in plastic bottles made of high-density polyethylene |
| Chemical reaction | No chemical reaction involved, only dissolution |
| Plastic composition | Plastic molecules (polymers) held together by intermolecular forces |
| Acetone composition | Acetone has attractive forces that interact with plastic, breaking plastic intermolecular attractions and replacing them with plastic-acetone forces |
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What You'll Learn
- Polystyrene is easily dissolved by acetone
- ABS filaments can be dissolved by acetone
- Plastics with similar chemical compositions to acetone are more likely to be dissolved
- Acetone can damage plastic surfaces, softening or smearing them
- Acetone is sold in plastic containers made of high-density polyethylene
Polystyrene is easily dissolved by acetone
Acetone, also known as dimethyl ketone or propanone, is a commonly used and relatively inexpensive solvent. It is often used to dissolve plastics. Some plastics have negligible reactions to acetone, while others are severely affected, especially at high concentrations and over long periods of time. Acetone can damage the surface of these plastics, softening, smearing, or even dissolving them.
Polystyrene is a type of plastic that is easily dissolved by acetone. It is often used in experiments and demonstrations to show the solubility of plastic in an organic solvent. Polystyrene is manufactured from polystyrene granules that incorporate a blowing agent—a substance that, when heated, gives off a gas. This may be a volatile liquid, such as pentane, or a carbonate. The granules are then steam-heated, and the gas from the blowing agent expands to produce a foam plastic.
When polystyrene is placed in acetone, it seems to dissolve, but it actually only softens as it absorbs the acetone and allows the air to escape, causing the foam to collapse. A small volume of acetone can absorb an impressive volume of expanded polystyrene. This process creates a colloidal gel consisting of acetone molecules dispersed in a network of large polystyrene molecules. The polystyrene gel formed is an excellent adhesive and can be very difficult to remove from surfaces and clothing.
Common polystyrene products include disposable razors, plastic yogurt containers, plastic mailers, and CD jewel cases. While polystyrene easily dissolves in acetone, it can also be dissolved in other strong solvents such as toluene and gasoline.
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ABS filaments can be dissolved by acetone
Acetone, also known as dimethyl ketone or propanone, is a widely used and relatively inexpensive solvent. It is a colourless liquid that can dissolve both polar and nonpolar substances, including plastics. The ability of acetone to dissolve plastics depends on the chemical composition of the plastic. If the chemical makeup of the plastic is similar to that of acetone, the acetone will dissolve the plastic or affect its surface, softening, smearing, or even dissolving it.
Acrylonitrile butadiene styrene (ABS) is a type of plastic that can be dissolved by acetone. ABS is commonly used in 3D printing and can be smoothed using acetone vapour baths or other methods. The acetone vapour causes the individual print layers of ABS to fuse together, resulting in a glossy surface finish with no visible lines. This process is known as ABS acetone smoothing and can be used to create glossy, polished 3D-printed ABS parts.
To perform ABS acetone smoothing, untreated 3D-printed ABS parts are exposed to acetone vapours. This causes the ABS plastic to undergo a near-dissolution process, where the layers bond together, resulting in a shiny surface. The thickness of the coating will affect the degree of smoothing achieved, with thinner coatings possibly not completely hiding layer lines. ABS acetone smoothing can also be used to enhance the strength of ABS parts by improving interlayer adhesion.
It is important to note that not all ABS filaments dissolve easily in acetone. The composition of the ABS filament plays a significant role in its solubility. Some ABS filaments may only soften or partially dissolve in acetone, resulting in a gooey deposit at the bottom of the container. Additionally, inexpensive ABS filaments may contain additives from different plastics that can affect their solubility in acetone. Therefore, it is recommended to use high-quality ABS filaments from reputable brands to ensure better results.
ABS juice, ABS glue, and ABS slurry are different concoctions created by dissolving ABS filaments in acetone. These mixtures have varying viscosities and are used for different purposes, such as enhancing bed adhesion, bonding ABS parts, filling gaps, and smoothing surfaces. For example, ABS juice is made by dissolving a small amount of ABS in acetone, creating a runny liquid that improves adhesion when applied to the print bed. ABS glue, on the other hand, is a thicker version made with more ABS, and ABS slurry is the thickest mixture, with a paste-like consistency.
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Plastics with similar chemical compositions to acetone are more likely to be dissolved
Acetone, also known as dimethyl ketone or propanone, is a commonly used and relatively inexpensive solvent. It is often used to dissolve plastics, but it is important to note that not all plastics will dissolve in acetone. The solubility of a plastic in acetone depends on its chemical composition.
The rule "like dissolves like" is a key concept in understanding why some plastics are soluble in acetone while others are not. This concept is further elaborated by Hansen solubility parameters, which predict solubility by calculating the relative energy difference between two molecules in a 3D space based on their dispersion forces, intermolecular forces, and hydrogen bonding.
Plastics with chemical compositions similar to acetone are more likely to be dissolved by it. This is because the acetone molecules interact with the plastic molecules, breaking the plastic's intermolecular attractions and replacing them with plastic-acetone attractive forces. As a result, the plastic's surface may soften, smear, or even dissolve completely.
Some specific plastics that are known to be soluble in acetone include polystyrene, ABS (Acrylonitrile Butadiene Styrene), and acrylics (Perspex/PMMA). These plastics can be easily dissolved in acetone, making them useful for various applications such as microfluidics experiments.
On the other hand, plastics with chemical compositions that are significantly different from acetone are less likely to be affected by it. For example, acetone is sold in metal containers and plastic bottles made of high-density polyethylene, indicating that these materials are resistant to dissolution by acetone. Additionally, consulting a plastic chemical resistance chart can help determine which plastics are suitable for specific applications involving acetone.
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Acetone can damage plastic surfaces, softening or smearing them
Acetone is a commonly used, relatively inexpensive solvent with the chemical formula (CH₃)₂C=O. It is also known as dimethyl ketone or propanone. A solvent is a medium intended to dissolve a chemical (the solute) so that it can be put to practical use.
Acetone can dissolve certain plastics, but not all. The solubility of a plastic in acetone depends on the chemical composition of the plastic in question. If a particular plastic bears a close enough similarity to acetone, the acetone will dissolve or at least affect its surface, softening, smearing, or even dissolving the plastic.
Polystyrene is a plastic that can be easily dissolved in acetone, as well as in other stronger solvents such as toluene. Acrylics (perspex/PMMA) are also plastics that can be dissolved in acetone. Acetone is effective in dissolving superglue, which is chemically similar to these plastics. ABS, a plastic used in 3D printing, can also be dissolved in acetone, although some ABS filaments are becoming more resistant to acetone.
It is important to note that acetone is sold in metal containers to prevent its interaction with plastic. Some companies sell acetone in plastic bottles made of high-density polyethylene, which is more resistant to acetone.
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Acetone is sold in plastic containers made of high-density polyethylene
Acetone is a commonly used and relatively inexpensive solvent. It is often used to dissolve chemicals so that they can be used for practical purposes. It is important to note that acetone can only dissolve certain types of plastics. The solubility depends on the chemical composition of the plastic in question.
The "like dissolves like" rule of thumb is often used to determine solubility. For instance, water is an excellent solvent for wood alcohol or methanol. If the methyl group had been larger, it would not dissolve in water as it would lose its similarity. Similarly, if a particular plastic bears a close enough similarity to acetone, the acetone will dissolve or at least affect its surface, softening, smearing, or even dissolving the plastic.
Polystyrene is a plastic that is easily dissolved in acetone, as well as other stronger solvents such as toluene. Acrylics (perspex/PMMA) are also good choices as acetone is effective in dissolving super glue, which is chemically similar. ABS can also be easily dissolved in acetone, although some ABS filaments don't dissolve quickly enough.
Despite acetone's ability to dissolve certain plastics, it is still sold in plastic containers. This is because the plastic used for these containers is made of high-density polyethylene, which is resistant to acetone. As a result, the acetone is safely contained without the risk of dissolving the container.
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Frequently asked questions
Acetone can dissolve certain plastics, but not all. The dissolving depends on the chemical composition of the plastic. Some plastics that acetone can dissolve include polystyrene, ABS, and acrylics (perspex/PMMA).
Acetone is a hydrocarbon, and plastic is made up of molecules (polymers) held together by intermolecular forces. When plastic is placed in acetone, the attractive forces of the acetone interact with the plastic, breaking the plastic's intermolecular attractions and replacing them with plastic-acetone bonds.
The solubility of a substance is determined by its chemical composition. The concept of "like dissolves like" suggests that substances with similar structures are more likely to dissolve in each other. Therefore, if a plastic has a chemical structure similar to acetone, it will be more likely to dissolve in it.
