Sofia Martinez
Acrylonitrile butadiene styrene (ABS) is a popular plastic used in manufacturing. It is made from three monomers: acrylonitrile, butadiene, and styrene, which are produced using fossil fuels as feedstock. One of the monomers, butadiene, is a petroleum hydrocarbon obtained from the C4 fraction of steam cracking. While ABS is 100% recyclable, its production contributes to carbon emissions and environmental concerns related to resource sustainability and dependence on fossil fuels.
| Characteristics | Values |
|---|---|
| Composition | Acrylonitrile, Butadiene, Styrene |
| Production | Made from petroleum-based compounds |
| Properties | Rigid, strong, impact-resistant, tough, machinable, durable, heat-resistant, chemical-resistant, flame-retardant, recyclable |
| Uses | 3D printing, prototyping, manufacturing (toys, automotive parts, household items, electronics), vacuums, musical instruments, computer keyboards, golf clubs |
| Downsides | Poor UV resistance, prone to yellowing and brittleness, flammable, gives off ultrafine particles, contributes to carbon emissions and resource depletion |
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What You'll Learn
ABS is made from acrylonitrile, butadiene and styrene monomers
Acrylonitrile butadiene styrene (ABS) is a thermoplastic polymer that is made from acrylonitrile, butadiene, and styrene monomers. It is a commercially important amorphous copolymer, with properties that can be tuned by varying the ratio of its monomer units. The different amounts of each monomer can be added to the process to further vary the finished product.
Acrylonitrile is a synthetic monomer produced from propylene and ammonia. It gives ABS rigidity and resistance to heat. As more acrylonitrile is added to ABS, the part will start sacrificing some of its elasticity. It also contributes to the plastic's chemical resistance, fatigue resistance, hardness, and rigidity, while increasing the heat deflection temperature.
Butadiene is a synthetic rubber monomer made by removing hydrogen from petroleum-based compounds. It creates stronger, more unsaturated hydrocarbon chains. If a lot of this is added to ABS, the part will become softer, more pliable, and less brittle. It provides ductility at low temperatures, flexibility, and good melt strength. It also contributes to the plastic's impact resistance.
Styrene is created using a similar process to butadiene and usually takes up around 50% of the ABS composition, with the other two monomers varying in amounts. It gives the plastic a shiny, impervious surface, as well as hardness, rigidity, and improved processing ease. High styrene concentrations improve processability, while the monomer itself gives good processability, gloss, and hardness.
The three monomers are combined through the emulsification process, which involves combining multiple products that don't typically combine into a single product. When combined, the acrylonitrile develops a polar attraction with the other two components, resulting in a tough and highly durable finished product. ABS is derived from natural gas and petroleum, and it is used in a variety of applications, including 3D printing, manufacturing, and personal items.
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Butadiene is a petroleum hydrocarbon
ABS (acrylonitrile butadiene styrene) is a thermoplastic polymer that is made by mixing together two plastics and one rubber. Acrylonitrile butadiene styrene is derived from acrylonitrile, butadiene, and styrene. Butadiene is a synthetic rubber monomer that is made by removing hydrogens from petroleum-based compounds. This process creates stronger, more unsaturated hydrocarbon chains.
Butadiene is, indeed, a petroleum hydrocarbon. It is an organic compound with the formula CH2=CH-CH=CH2. It is a colorless gas that can be easily condensed into a liquid. Butadiene is important in industry as a precursor to synthetic rubber. The molecule can be seen as the union of two vinyl groups. It is the simplest conjugated diene.
French chemist E. Caventou isolated butadiene from the pyrolysis of amyl alcohol in 1863. It was Henry Edward Armstrong who identified the substance as butadiene in 1886, after isolating it from the pyrolysis products of petroleum. In 1910, Russian chemist Sergei Lebedev polymerized butadiene and produced a material with rubber-like qualities. This polymer was deemed too soft to replace natural rubber, especially for automobile tires.
In the US, Western Europe, and Japan, butadiene is produced as a byproduct of the steam cracking process used to produce ethylene and other alkenes. When mixed with steam and heated to very high temperatures (often over 900 °C), aliphatic hydrocarbons yield hydrogen, resulting in a complex mixture of unsaturated hydrocarbons, including butadiene. The quantity of butadiene produced depends on the hydrocarbons used as feed. Light feeds, such as ethane, tend to produce ethylene, while heavier feeds favor the formation of heavier olefins, butadiene, and aromatic hydrocarbons.
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ABS is 100% recyclable
ABS, or acrylonitrile butadiene styrene, is a type of plastic that is 100% recyclable. It is made by mixing together two plastics and one rubber, with the proportions of each component varying from 15% to 35% acrylonitrile, 5% to 30% butadiene, and 40% to 60% styrene. The result is a long chain of polybutadiene crisscrossed with shorter chains of poly(styrene-co-acrylonitrile).
The process of recycling ABS is similar and simple, regardless of whether it is done at home, a municipal recycling facility, or an industrial recycling unit. First, ABS must be separated from other forms of plastic and general debris. Then, the various items made of ABS are ground into granular form, typically through the use of an industrial grinder. Finally, the granules are fed into an extruder, and out comes recycled ABS plastic in the form of sheets, filaments, or directly fed into an injection moulding unit.
ABS can be recycled two or more times, although its engineering properties such as durability, toughness, and tensile strength decrease with each cycle. Thus, for applications that require absolute dependability on the physical properties of ABS, virgin or low-recycled ABS is recommended. Nevertheless, recycled ABS is suitable for most applications, especially hobbyist 3D printing.
Despite being 100% recyclable, ABS waste often ends up in landfills due to the fact that most municipalities do not recycle plastics with a recycling code of seven, which includes ABS. Manufacturers can, however, reuse and recycle ABS, even if local governments do not.
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ABS production relies on non-renewable petroleum
Acrylonitrile butadiene styrene (ABS) is a thermoplastic polymer that is widely used in manufacturing for its durability, cost-effectiveness, and versatility. It is made from three monomers: acrylonitrile, butadiene, and styrene, which are combined in different ratios to achieve varying properties. ABS production relies heavily on non-renewable petroleum, which raises concerns about resource sustainability and our continued dependence on fossil fuels.
The first stage of ABS production involves the creation of these three monomers by petrochemical companies using fossil fuels as feedstock. Acrylonitrile is a synthetic monomer produced from propylene and ammonia, providing ABS with rigidity and heat resistance. Butadiene is a synthetic rubber monomer derived from petroleum-based compounds, enhancing the strength and pliability of ABS. Styrene, constituting around 50% of the ABS composition, gives the plastic a shiny, hard, and rigid surface while improving processing ease.
The second stage of ABS production involves the polymerization of these monomers to form long chains of polybutadiene crisscrossed with shorter chains of poly(styrene-co-acrylonitrile). The nitrile groups from neighbouring chains attract each other, binding the chains together and making ABS stronger than pure polystyrene. The polybutadiene, a rubbery substance, provides toughness and ductility at low temperatures.
While ABS is 100% recyclable and has a long lifespan, its production contributes to carbon emissions and plastic pollution if not properly recycled. Efforts are being made to transition to more sustainable alternatives and reduce the environmental impact of ABS production through energy efficiency, improved waste management, advanced recycling technologies, and sustainable product design. However, as of now, ABS production remains heavily reliant on finite resources, underscoring the need for further advancements in environmental sustainability.
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ABS is used for vacuums, golf clubs, toys and more
Acrylonitrile butadiene styrene (ABS) is a plastic derived from acrylonitrile, butadiene, and styrene. Acrylonitrile is a synthetic monomer produced from propylene and ammonia; butadiene is a petroleum hydrocarbon; and styrene monomer is made by dehydrogenation of ethylbenzene, a hydrocarbon. ABS is used in a wide variety of applications due to its unique properties, which include good impact resistance, toughness, ductility at low temperatures, hardness, rigidity, and the ability to be easily machined and welded.
One common use of ABS is in the manufacture of toys, including Lego bricks, which have primarily been made from ABS since 1963. ABS is well-suited for toys because it is stable at normal temperatures and safe for children to handle. However, at high temperatures, dyed ABS plastic can start to release toxic substances, so toys made from ABS should not be placed on fire or in direct sunlight.
ABS is also used in the manufacture of golf club heads due to its good shock absorbance. Additionally, ABS can be used in vacuum cleaners due to its ability to be extruded and injection-molded. Other applications of ABS include drain-waste-vent pipes, automotive trim components, binoculars, inhalers, computer cases, luggage, small kitchen appliances, and musical instruments such as recorders, oboes, and clarinets.
The unique properties of ABS, such as its impact resistance, toughness, and ease of processing, make it a versatile material that can be tailored to a wide range of applications, from toys and sports equipment to household appliances and medical devices.
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Frequently asked questions
Yes, ABS plastic is made of petroleum.
ABS stands for Acrylonitrile Butadiene Styrene.
ABS plastic is made from three monomers: acrylonitrile, butadiene, and styrene.
ABS plastic is strong, flexible, and heat-resistant. It has high impact resistance and toughness, and it can withstand considerable stress without cracking or breaking.
ABS plastic is made by polymerizing the three monomers: acrylonitrile, butadiene, and styrene. This process is typically done through emulsification, creating a single cohesive product from materials that would otherwise not mix.
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