Omar Khalid
Plasticizers are additives used to enhance the flexibility, workability, viscosity, softness, plasticity, and durability of materials, especially plastics. They are commonly added to polymers and plastics such as PVC, to facilitate the handling of raw materials during fabrication and meet the demands of the end product's application. Plasticizers are organic chemicals that improve the flexibility of materials by reducing the intermolecular forces between polymer chains, allowing them to move more freely. The most common plasticizers are phthalates, derived from phthalic acid, which are known for their long-term stability, low volatility, and good stability. Other types of plasticizers include adipates, terephthalates, chlorinated plasticizers, and bio-based plasticizers.
| Characteristics | Values |
|---|---|
| Chemical Composition | Ester plasticizers, phthalates, adipates, terephthalates, sebacates, fatty acid esters, etc. |
| Physical State | Low-volatility liquids or solids |
| Molecular Weight | 300-600 g/mole |
| Function | Improve flexibility, viscosity, softness, friction level, plasticity, and durability of materials |
| Applications | PVC, cables, wires, vinyl flooring, roofing, automotive parts, medical devices, paints, adhesives, sealants, etc. |
| Safety | Evaluated by organizations like REACH and FDA; some endocrine disruption effects found in laboratory animal studies |
Explore related products
What You'll Learn
Phthalates are the most common plasticizers
Plasticizers are low-volatility liquids or solid substances added to raw polymers to improve their flexibility, facilitate shaping and moulding, and reduce friction on their surface. They are commonly added to plastics such as PVC, either to facilitate the handling of the raw material during fabrication or to meet the demands of the end product's application.
Phthalates are indeed the most common plasticizers, with around 5.5 million tonnes produced in 2015, up from 2.7 million tonnes in the 1980s. They are esters of phthalic acid, mainly used as plasticizers to increase the flexibility, transparency, durability, and longevity of plastics. Phthalates are especially key to the usability of polyvinyl chloride (PVC), which is the third most widely used plastic. Without phthalates, PVC is hard and brittle, but with them, it becomes suitable for products such as vinyl siding, roofing, vinyl flooring, plumbing, and electric wire insulation. Phthalates are also used in wire and cable applications, flooring, adhesive films, medical equipment, cosmetics, coated fabrics, roofing membranes, synthetic leathers, and automobile interiors.
The two main categories of phthalates are high-molecular-weight (HMW) and low-molecular-weight (LMW) ortho-phthalates. HMW phthalates have 7-13 carbon atoms in their structure, while LMW phthalates have 3-6. HMW phthalates represent 70% of the plasticizers market, while LMW phthalates comprise about 5%. However, LMW phthalates are considered dangerous substances by the European Union's REACH regulation due to their damaging effects on reproductive health.
Historically, the most important phthalates include DINP, DEHP, BBP, DBP, and DIHP. However, many of these are now facing regulatory pressure and gradual phase-outs due to health concerns. For example, DEHP, the most widely used phthalate, is regulated as a toxin and banned from use in cosmetics, children's toys, and medical devices in many countries. DINP and DIDP are now used as substitutes for DEHP in many applications as they are not classified as hazardous.
Despite the concerns and gradual phase-outs of certain phthalates, they remain ubiquitous in the environment due to plastic waste, and human exposure is virtually unavoidable. Phthalates can easily leach into food, water, and other products applied directly to the human body, leading to potential health and environmental risks.
Plastic's Global Journey: An Unseen Migration
You may want to see also
Explore related products
Chlorinated plasticizers are used in automotive parts
Plasticizers are chemical compounds added to materials, particularly plastics, to increase their plasticity or flexibility. They are commonly added to polymers and plastics such as polyvinyl chloride (PVC) to facilitate the handling of the raw material during fabrication or to meet the demands of the end product's application.
Chlorinated plasticizers are a type of plasticizer that is used in PVC to improve its processing and enhance its resistance to oil, heat, and flame. These plasticizers are often found in specialized applications like automotive and industrial products. They are particularly effective in enhancing the oil and heat resistance of PVC, as well as improving its flame retardancy. Chlorinated plasticizers are known for their long-term stability and durability in harsh environments.
Chlorinated plasticizers are used in various automotive parts, such as hydraulic hoses, wire coatings, and other automotive components. They are also used in automotive cable and wire applications, as they can provide greater performance at high temperatures. Trimellitates, a type of chlorinated plasticizer, are used in automobile interiors and other applications where resistance to high temperatures is required.
The use of chlorinated plasticizers in automotive parts offers several benefits, including improved processing, enhanced resistance to oil and heat, flame retardancy, and long-term stability. These properties make chlorinated plasticizers well-suited for use in automotive components, contributing to the overall performance and durability of the vehicle.
Plastic Tongue Piercings: Dental Damage or Safe Style?
You may want to see also
Explore related products
Aromatic plasticizers improve low-temperature flexibility
Plasticizers are chemical substances that are added to polymers and plastics such as PVC to enhance their flexibility, workability, and durability. They are low-volatility liquids or solids that improve the flexibility of the material they are added to, making it easier to shape, mold, and reduce friction on its surface.
Aromatic plasticizers, derived from aromatic hydrocarbons, are used to enhance the processing characteristics of materials. They are particularly effective in improving the low-temperature flexibility and durability of plastics. Aromatic plasticizers provide superior cold-weather performance, making plastics more flexible at lower temperatures. They also improve the flow and processability of the material during manufacturing.
The presence of an aromatic ring in the structure of a plasticizer introduces great flexibility to plastics. This is due to the increased polarity caused by the aromatic ring, which increases the interaction with the PVC backbone. DBS, for example, has two aromatic rings, and it was observed that it substantially increased the flexibility of PVC.
Aromatic plasticizers are commonly used in applications such as automotive parts, industrial flooring, and hoses, where enhanced chemical resistance and low-temperature flexibility are essential. They are also used in wire and cable applications where high-temperature resistance is required.
Overall, aromatic plasticizers are an important type of plasticizer that improves the low-temperature flexibility and durability of plastics, making them suitable for a wide range of applications.
Restore White Dirt Bike Plastics: Tips for a Fresh Look
You may want to see also
Explore related products
Terephthalates are used as replacements for ortho-phthalates
Plasticizers are low-volatility liquids or solids added to polymers like plastics and rubbers to improve their flexibility and make them easier to shape, mould, and handle. They are especially key to the usability of polyvinyl chloride (PVC), the third most widely used plastic. Phthalates are the most commonly used plasticizers, with ortho-phthalates representing 70% of the plasticizers market.
However, phthalates have been found to be toxic for reproduction, hormone-disrupting, and harmful to the brain. Due to these concerns, there has been a push to replace ortho-phthalates with non-phthalate alternatives. Terephthalates are one such alternative. Terephthalates are isomeric with ortho-phthalates but have proven to have cleaner toxicological results due to their inability to form stable monoesters during hydrolysis and metabolic breakdown.
One example of a terephthalate used as a replacement for ortho-phthalates is di(2-ethylhexyl) terephthalate (DEHT), which has been found to have no disruption in sexual development in male mice relative to ortho-phthalates. DEHT is also known as DOTP and represents 42% of the market for alternative plasticizers. It is more commonly used in the United States, while DINCH, another alternative, is more frequently used in Europe.
Other terephthalates used as replacements for ortho-phthalates include Diisopentyl terephthalate (DiPT), used as a replacement for DBP and DiBP, and Dibutyl terephthalate (DBT), used as a replacement for DBP and DiBP. These terephthalates are produced by chemical companies such as Evonik Industries and Eastman Chemical Company, which markets DBT under the trademark Eastman Effusion.
Replacing Plastic Door Thresholds: A Step-by-Step Guide
You may want to see also
Explore related products
Bio-based plasticizers are a greener alternative
Plasticizers are low-volatility liquids or solids that are added to polymers like plastics and rubbers to improve their flexibility and make them easier to shape, mould, and handle. They are commonly added to polyvinyl chloride (PVC) to make it suitable for products such as vinyl flooring, plumbing, and electric wire insulation.
However, traditional plasticizers such as phthalates and terephthalates have come under scrutiny for their environmental and health impacts. This has led to the development of bio-based plasticizers as a greener alternative.
Bio-based plasticizers are derived from renewable resources, offering a more sustainable and environmentally conscious option compared to traditional plasticizers. For example, Cargill has developed a bio-based plasticizer called BioveroTM, which meets the rigorous regulations for the PVC industry without sacrificing performance or profitability. Similarly, VikoflexTM, another bio-based plasticizer by Cargill, provides sustainability benefits and is used in custom applications such as plasticization, stabilization, and acid scavenging.
One of the advantages of bio-based plasticizers is their ability to enhance the performance of PVC products at lower temperatures. For instance, Cargill's plasticizers can help PVC products maintain their flexibility and performance in colder conditions. This makes them suitable for applications such as wire insulation and jacketing, as well as in the footwear industry, where they can provide a balance between comfort and durability.
In addition to sustainability and performance, bio-based plasticizers also offer cost savings and efficiency benefits. For instance, lab testing of Cargill's plasticizers has indicated higher efficiency, faster processing, and compatibility for PVC and other polymer applications when compared to phthalate-based options. Furthermore, bio-based plasticizers can be formulated without phthalates, terephthalates, or their derivatives, addressing safety and environmental concerns associated with these chemicals.
Overall, bio-based plasticizers offer a greener alternative to traditional plasticizers by providing sustainability, performance, and cost benefits, while also addressing environmental and health concerns associated with certain chemical additives.
Louis Vuitton Scarves: Plastic Packaging, Real Luxury?
You may want to see also
Frequently asked questions
Plasticizers are organic chemicals that improve the flexibility, viscosity, softness, friction level, and plasticity of materials. They are commonly added to polymers and plastics such as PVC.
The chemical components of plasticizers include phthalates, adipates, terephthalates, sebacates, azelates, dibenzoates, fatty acid esters, and more.
Plasticizers are used to make materials softer and more flexible. They are commonly added to polymers and plastics such as PVC to improve their handling during fabrication and meet the demands of the end product's application.
Plasticizers are typically classified according to their chemical composition, with each composition having unique properties that can be imbued into base polymers for specific applications.
The safe use of plasticizers is regulated by organizations such as the Registration, Evaluation, Authorisation, and Restriction of Chemicals (REACH) in Europe and the FDA. While most plasticizers have been found to be safe, certain phthalates have been associated with adverse endocrine-related effects in laboratory studies.
