Maya Ellison
Plasticizers are additives incorporated into plastics to increase their softness and flexibility, thus facilitating the manufacturing process and the usability of the end product. Plasticizers are commonly added to polymers and plastics such as polyvinyl chloride (PVC), which is the third most widely used plastic. Without plasticizers, PVC is hard and brittle, but with them, it becomes flexible and bendable, making it suitable for products such as vinyl flooring, roofing, plumbing, and electrical wire insulation. Plasticizers are also added to concrete and stucco to reduce the amount of water needed and create a stronger, more workable substance. In recent years, there has been growing concern about the potential health risks associated with plasticizer exposure, as they have been classified as endocrine-disrupting chemicals (EDCs) due to their ability to interfere with the endocrine systems of both animals and humans.
| Characteristics | Values |
|---|---|
| Definition | An additive that is incorporated into plastics to increase softness and flexibility and facilitate the manufacturing process |
| Use | Added to polymers and plastics such as PVC to facilitate handling of raw materials during fabrication or meet the demands of the end product's application |
| Examples | Phthalates, Dicarbonates, Phosphates, Fatty Acid Esters, Di-(2-ethylhexyl) phthalate (DEHP), Diisononyl phthalate (DiNP), Ditridecyl phthalate (DTDP) |
| Industries | Medical thermoforming, telecommunications, concrete, stucco, adhesives, rubber, fabric, food, agriculture, architecture, sports, lifestyle, defense, mining, automobiles, transportation |
| Safety | The Registration for Evaluation, Authorisation, and Restriction of Chemicals (REACH) and the FDA have determined that nearly all plasticizers are safe. However, concerns have been raised about the safety of phthalates, especially DEHP, due to their accumulation in the human body and potential negative impacts on male health, neurodevelopment, and endocrine disruption. |
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What You'll Learn
- Plasticizers are used in many everyday products, from food containers to cosmetics
- They are added to materials to make them softer and more flexible
- Plasticizers are commonly added to polymers and plastics such as PVC
- Phthalates are the most common type of plasticizer
- There are concerns about the safety of some plasticizers, with studies showing they can disrupt the endocrine system
Plasticizers are used in many everyday products, from food containers to cosmetics
Plasticizers are substances added to plastics to make them more flexible and durable. They are commonly added to polymers and 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. Without plasticizers, PVC is hard and brittle. With them, it becomes suitable for products such as vinyl siding, roofing, vinyl flooring, plumbing, and electric wire insulation/coating.
The presence of toxic chemicals in food containers is both intentional and inadvertent due to contamination. A comprehensive study of plastic packaging identified 906 chemicals that have been assessed for toxicity and possibly another 3377 with unknown toxicity. The federal government has produced charts to help educate consumers on the types of plastics used for storage and their relative toxicity. Plastic containers have numbers on them to indicate which chemical they are made of and their recyclability.
Plasticizers are also used in cosmetics and personal care products. For example, propylene glycol, glycerin, and polyethylene glycol are used to modify the physical properties of a basic polymer, providing flexibility and permeability of the capsule film coating.
In addition to food containers and cosmetics, plasticizers are used in many other applications, including medical thermoforming to create IV bags and flexible devices, and telecommunications to form durable, low-friction, flexible casing to go around wires and cables.
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They are added to materials to make them softer and more flexible
Plasticizers are substances added to materials to make them softer and more flexible. They are commonly added to polymers and plastics, such as PVC, to improve their flexibility and durability. Without plasticizers, PVC would be hard and brittle, but with them, it becomes suitable for products such as vinyl siding, roofing, flooring, and electrical wire insulation. Plasticizers are also added to other materials like concrete, rubber, and adhesives to improve their workability and flexibility.
There are various types of plasticizers available, including phthalates, adipates, terephthalates, and sebacates. Phthalates, the most common type, have come under regulatory scrutiny due to potential health and environmental concerns. For example, certain phthalates are listed under California Proposition 65 as chemicals known to cause cancer, birth defects, or reproductive harm. However, other phthalates have been deemed safe by organizations like REACH and the FDA.
The choice of plasticizer depends on various factors such as compatibility with the host material, performance requirements, processing needs, cost, and regulatory compliance. Plasticizer efficiency is influenced by factors such as molecular weight and the linearity of the alcohol chain. The migration of plasticizers from one material to another, such as from PVC to an adhesive, can also affect the properties of the receiving material.
Plasticizers have become integral to our daily lives, being used in a wide range of products, from food containers and toys to medicines and electronics. While they enhance the flexibility and durability of these products, there are growing concerns about the potential health risks associated with human exposure to plasticizers, particularly their ability to disrupt the endocrine system. As a result, the safe use of plasticizers is strictly regulated, and ongoing research aims to address these concerns and develop safer alternatives.
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Plasticizers are commonly added to polymers and plastics such as PVC
Plasticizers are substances added to materials to make them softer, more flexible, and easier to handle. They are commonly added to polymers and plastics such as PVC (polyvinyl chloride), the third most widely used plastic. PVC is hard and brittle without plasticizers, but with them, it becomes flexible and durable, making it suitable for products like vinyl siding, roofing, vinyl flooring, plumbing, and electric wire insulation. Plasticizers are also added to other plastics and polymers like acrylates and cellulose-type plastics to improve their properties.
The most common type of plasticizer is phthalate esters, which account for about 90% of polymer plasticizers. Phthalates are known for their low volatility, low water solubility, and good compatibility with PVC. However, due to health and safety concerns, there has been a move away from certain phthalates towards alternative plasticizers like high molecular weight ortho-phthalates, especially in Europe. Other types of plasticizers include dicarbonates, used for shaping PVC at lower temperatures, and phosphates, which make materials flame retardant. Fatty acid esters are another common type of plasticizer added to rubber and vinyl to improve flexibility.
The choice of plasticizer depends on various criteria, including expected exposure conditions, processing conditions, compatibility, weatherability, and low-temperature flexibility. Plasticizers are selected based on cost-performance evaluation, considering factors such as compatibility, processibility, permanence, and other performance properties.
Plasticizers are used in almost every industry, including medical, telecommunications, and construction. In the medical field, plasticizers are used in medical thermoforming to create IV bags and flexible devices. In telecommunications, they are used to form flexible, low-friction casings for wires and cables. Plasticizers are also added to concrete and stucco to improve their workability and reduce the amount of water needed.
While plasticizers have been deemed safe by regulatory organizations like REACH and the FDA, there have been concerns about the potential health risks associated with certain phthalates. Some lower molecular weight phthalates have been classified as potential endocrine disruptors and have been banned or restricted in certain applications, especially those involving children's products. Overall, plasticizers play a crucial role in enhancing the flexibility, durability, and usability of plastics like PVC in a wide range of industries.
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Phthalates are the most common type of plasticizer
Plasticizers are substances added to materials to increase their plasticity, decrease their viscosity, and reduce friction during handling in manufacturing. They are commonly added to polymers and plastics such as PVC to improve their flexibility and make them easier to shape and mould.
The health risks associated with phthalates are a growing concern. Phthalates have been linked to various health issues, including endocrine disruption, decreased semen quality, neurodevelopmental issues, and an increased risk of childhood asthma. They have also been associated with low birth weight, endometriosis, decreased testosterone levels, ADHD, Type 2 diabetes, and certain types of cancer. Despite these concerns, phthalates remain widely used due to their low volatility, low water solubility, and good compatibility with PVC polymers.
Regulatory bodies have begun to address the potential dangers of phthalates. For example, California Proposition 65 lists certain phthalates as chemicals known to cause cancer, birth defects, or reproductive harm. However, it does not prohibit their use or require specific labelling. In Europe, certain phthalates have been banned from manufacture, importation, and usage under the REACH protocol.
Overall, phthalates are a common type of plasticizer that improves the flexibility of plastics and makes them easier to work with. However, their widespread use and potential health risks have become a growing concern for regulatory bodies and consumers alike.
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There are concerns about the safety of some plasticizers, with studies showing they can disrupt the endocrine system
Plasticizers are substances added to materials to increase their plasticity and flexibility. They are commonly added to polymers and plastics, such as PVC, to improve their handling during manufacturing and meet the demands of the end product. Plasticizers are also added to concrete to make it more fluid and workable for pouring.
Phthalates, a common type of plasticizer, have been classified as potential endocrine disruptors. Low molecular weight ortho-phthalates, in particular, have been associated with developmental toxicity. Phthalates are used in a wide range of products, including fragrances, insect repellents, and medical devices such as plastic tubing. They are also found in food packaging, cosmetics, body care products, and children's toys. Due to these concerns, regulatory bodies have moved away from classified substances to non-classified alternatives, especially in Europe.
Bisphenol A (BPA), another chemical additive used in polycarbonate plastics and epoxy resins, has also been identified as an endocrine disruptor. BPA is commonly found in food and beverage containers, water bottles, and the linings of food cans. It leaches from these products and contaminates the environment, including water sources and beach sand.
The recognition of the potential harm caused by these chemicals has led to calls for global policy changes to protect public health and the environment from the threats posed by endocrine-disrupting chemicals in plastics.
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Frequently asked questions
Plasticizers are substances added to materials to make them softer, more flexible, and easier to handle. They are commonly added to polymers and plastics like PVC to improve their flexibility and durability.
Plasticizers are used in a wide range of products, including food containers, toys, medicines, building materials, electronic devices, cosmetics, perfumes, and personal care items. They are especially important in the production of polyvinyl chloride (PVC), which is used in flooring, roofing, plumbing, electrical insulation, and more.
There have been concerns raised about the potential health risks associated with plasticizers, particularly endocrine disruption and their potential classification as endocrine-disrupting chemicals (EDCs). However, organizations like REACH and the FDA have determined that most plasticizers are safe for use.
Common types of plasticizers include phthalates, fatty acid esters, adipates, terephthalates, and phosphates. Phthalates are the most common type, known for their flexibility and durability. Fatty acid esters are added to improve flexibility in rubber and vinyl.
