An introduction to pet polyethylene terephthalatepet also abbreviated pete is short for polyethylene terephthalate, the chemical name for polyester. Pet is an acronym for polyethylene terephthalate and it is best known as the clear plastic used for water and soda bottle containers. Experimental material and recycling runs virgin grade pet vpet eastlon cb602, from taiwan, ppgraftma exallor po 1015 was supplied by exxon chemical and the recycled beverage bottles rpet were taken from the production line of zamzam co, tehran. Because of pets unique properties, it is rapidly becoming the worlds preferred. But new evidence suggests that pet, or polyethylene. Pet bottles potential health hazard news in science abc. Substance physical state or concentration suitability the data provided below should not be construed as implying a. Pet bottle manufacturers have worked closely with the bottled water. Thermal and mechanical properties of recycled pet and its. With such an understanding, the piping designer can use the properties of. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units.
The wet process can be conveniently used for plastics such as. Clear pet plastic sheets have a good impact strength and fire resistance. Pets unique combination of properties also make it the choice for high precision and moving parts. Compared to metal, plastic has a low melting point, is highly malleable, and can be molded easily into basic or complex forms. Polyethylene terephthalate pet is a chemically stable polyester and its use has risen dramatically in the last few decades with a multitude of applications, ranging from food and drink containers to the manufacture of. Polyethylene terephthalate sometimes absorbs odours and flavours from foods and drinks that are stored in them.
An introduction to pet pet also abbreviated pete is short for. A strong, dimensionally stable plastic with outstanding chemical resistance and wear properties. Polyethylene terephthalate polyester petp is widely known in the form of biaxially oriented and thermally stabilised films usually referred to by their main brand names mylar, melinex or hostaphan. Pdf experimental investigation on the properties of. Typical reactions for chain assembling are polyaddition continuous or step wise and condensation polymerization polycondensation 1 figure 1. The first pet bottle to be recycled occurred in 1977. Pet is polyester, which has a chemical name of polyethylene terephthalate.
It also has a sligtly lower melting point and crystallizes much faster than pet. It is important to note that density varies with temperature. Pet fibres can also be used to form products such as wall insulation and clothing. The density of a plastic sample may change due to change in crystallinity, loss of plasticizers, absorption of solvent, etc. Click the down or up arrows triangles or column headings to sort plastic materials or material properties. Strictly speaking, these names should be used only for this type of film whose properties are different from, and in several respects superior to. Recycling pet beverage bottles and improving properties. Pdf properties of waste polyethylene terephthalate pet.
Plastic some of the values displayed above may have been converted from their original units andor rounded in order to display the information in a consistent format. Tx pet sheet internally lubricated with enhanced wear and resistance properties versus nylon and acetal. P pbt uhmw ptfe abs pc ppo psu pei peek pps pai pi hdpe pp pvc short term operating temperature degrees fahrenheit 0 100 200 300 400 500 600 pa 66 pa. Polyethylene terephthalate petchemical compatibility g pet exhibits good resistance to attack f pet exhibits fair resistance to attack x pet exhibits poor resistance, and should not be considered for this application. This guide provides a basic outline of the different plastic types associated with each code number. Experimental investigation on the properties of concrete with. Polyethylene terephthalate pet chemical compatibility g pet exhibits good resistance to attack f pet exhibits fair resistance to attack x pet exhibits poor resistance, and should not be considered for this application. Manju2 1 associate professor, 2 assistant professor, department of civil engineering, kumaraguru college of technology coimbatore, tamilnadu, india abstract waste plastic bottles are major cause of solid. P pbt uhmw ptfe abs pc ppo psu pei peek pps pai pi hdpe pp pvc long. Thermal properties of plastic materials professional plastics.
Methods of recycling, properties and applications of. However, the process of bottletobottle pet recycling may not be as easy as it seems since there is a need to ensure that the rpet has properties that are on par. Depending on its processing and thermal history, polyethylene terephthalate may exist both as an amorphous transparent and as a semicrystalline. Impact resistance petg is less brittle than acrylic, and is a lower cost alternative to polycarbonate. Pet pete is a thermoplastic polymer and has good physical properties of strength, ductility, stiffness and hardness. An engineered pet depolymerase to break down and recycle. Plastic is one of the most significant innovations of 20th century material. However, despite the benefits of using pet plastic, many misconceptions exist about plastic bottles. Pet is a clear, strong, and lightweight plastic that is widely used for packaging foods and beverages, especially conveniencesized. Select two or more materials and then press compare materials. Polyethylene terephthalate an overview sciencedirect.
Pet is spun into fibers for permanentpress fabrics, blowmolded into disposable beverage bottles, and extruded into photographic film and magnetic recording tape. Pet is a strong and lightweight plastic that is widely used for packaging foods. For chemically resistant plastic, view our chemical resistance of plastics chart. Plastic refers to a group of synthetic or semisynthetic materials that have been engineered to achieve specific properties. Pet polyethylene terephthalate, semicrystalline is a strong, stiff engineering plastic with excellent machining characteristics, chemical resistance, and bearing and wear properties. The rating that appears in this table refers to the wear properties of the material in a bearing or bush application, and is normally tested using a pinondisc wear test.
It does not deform lose its shape, at the temperatures reached by its contents in microwaves domestic ovens. Pet consists of polymerized units of the monomer ethylene terephthalate, with repeating c 10 h 8 o 4 units. It is calculated by dividing the mass of the material by the volume and is normally expressed in gcm3. Polyethylene terephthalate polyester, pet, petp 2080 115 80 40 to 60 1200 50 0.
Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials. The society of the plastics industry spi established a classification system in 1988 to allow. Petertalyte is an excellent candidate for parts used in the food processing and equipment industries. Lowviscosity pet typically has an intrinsic viscosity of less than 0. The transparent clear petg sheet has a standard tolerance. Blends of virgin pet and recycled food grade pet were prepared in the following weight ratios. Mechanical properties of concrete using recycled plastic. As a main component in many of the plastic bottles used today, one of the most common discussions about pet plastics is recycling it. Items made from this plastic are commonly recycled. Polyethylene terephthalate pet or poly ethylene terephthalate is a polymer that is used for. Pet plastic and petg plastic is the perfect choice for business and industrial use and have many excellent properties including.
Polyethylene terephthalate pet is a highly recyclable plastic resin and a form of polyester. Here we describe an improved pet hydrolase that ultimately achieves, over 10 hours, a minimum of 90 per cent pet depolymerization into monomers, with a productivity of 16. Polyethylene terephthalate pet is a thermoplastic material commonly used in the form of fibres and films, whose stability in environmental applications is of substantial interest. View plastic materials found under a specific property group. Experimental investigation on the properties of concrete. Pet is a plastic resin and the most commonly used plastic material. Natural petp ertalyte is also usda, 3adairy and canada ag compliant. Methods of recycling, properties and applications of recycled. Plastic is a synthetic material created from a broad range of organic polymers that have become an indispensable part of our everyday world.
Often, recycled pet bottles are used to make fleece garments, as well as plastic bottles. Plastic material properties table mechanical, physical. Find key facts about polyethylene terephthalate pet polymer. Polyethylene terephthalate petchemical compatibility g. It retains its strength and creep resistance to 180deg f.
Also, you may want to use our plastic material selection guide or interactive thermoplastics triangle to assist with the material selection process based on your application requirements. Petp ertalyte is fda compliant in natural and black. Polyethylene terephthalate pet is a thermoplastic polymer resin of the polyester family, biodegradable and semicrystalline. Such resins may be classified as lowviscosity or highviscosity resins. Mar 19, 2018 plastic is a synthetic material created from a broad range of organic polymers that have become an indispensable part of our everyday world. Plastic properties resins polyethylene terephthalate pet low density polyethylene ldpe high density polyethylene hdpe polypropylene pp polystyrene ps polyvinyl chloride pvc material code system symbols clarity clear translucent translucent translucent clear clear moisture barrier fair to good good good to.
Plastic properties tables wear resistance of plastics open or close the rating that appears in this table refers to the wear properties of the material in a bearing or bush application, and is normally tested using a pinondisc wear test. Oehlmann, endocrine disruptors in bottles mineral water. Pet polyester white this pet polyester also offers excellent sliding and wear properties, and a low coefficent of friction. It should be noted that this data does not refer to the abrasion properties of the material, which is. The basic structure of plastics or polymers is given by macromolecule chains, formulated. The reason to choose the pet bottles to develop a novel method to transfer it to valuable product and to solve the problem of dumping the tons of plastic waste, also pet. Pet plastics are some of the more commonly discussed plastics when searching for solutions for drinking water. With such excellent material properties, pet is widely used today as a packaging. Pet fibres are often mixed with natural fibres, combining the properties of both materials. Polyethylene terephthalate, or pet, a strong, stiff synthetic fiber and resin, and a member of the polyester family of polymers. With such an understanding, the piping designer can use the properties of the material to design for optimum performance.
Granules of three different grades of pet were supplied by leading synthetics pty. Polyethylene terephthalatepet for food packaging applications introduction olyethylene terephthalate pet is a plastic material which has found increasing applications within the packaging field. Typical reactions for chain assembling are polyaddition continuous or step wise and condensation polymer ization polycondensation 1 figure 1. Excellent product for medical face shields ppe face shields.
It is a polymer created by the combination of two monomers. Polyethylene terephthalate pet bottles, one of the waste plastic types, is used in this study. The facts about pet european federation of bottled waters. It is calculated by dividing the mass of the material by the volume and is normally expressed in gcm 3. Polyethylenetheraphtalate pet plastic nationwide plastics. As a raw material, pet is a petroleumbased product that is globally recognized as a safe, lightweight, and flexile material that is also 100% recyclable. This following page is intended to correct some of these.
Unlike other types of plastics, polyethylene terephthalate is considered safe and is represented on water bottles with the number 1, indicating it is a safe option. Petg polyethylene terephthalate glycolmodified is a tough, chemicalresistant plastic that has good machinability and can be shaped at relatively low temperatures. Describe another practical application of your chosen polymer other than the trays seen above. During that time regular pet plastic water bottles have maintained a reputation as safe, at least as far as human health is concerned. Plastic properties resins polyethylene terephthalate pet low density polyethylene ldpe high density polyethylene hdpe polypropylene pp polystyrene ps polyvinyl chloride pvc material code system symbols clarity clear translucent translucent translucent clear clear moisture barrier fair to good good good to excellent good to. Pet is commonly recycled, and has the number 1 as its resin identification code ric. Pet is often used for food processing machinery applications. Polyethylene terephthalate pet pet is clear, tough, and has good gas and moisture barrier properties. Pet plastic bottles are a popular choice for packaging soft drinks due to the numerous benefits they provide both to manufacturers and consumers. Pet combines the wear resistance of nylon with the dimensional stability of acetals. It is an estimate that the average household generates about 42 pounds of plastic bottles containing pet annually. Plastic properties tables plastics technical properties. An introduction to pet polyethylene terephthalate pet also abbreviated pete is short for polyethylene terephthalate, the chemical name for polyester.
Uv properties of plastics lawrence berkeley national. Cor peters, in supercritical fluid science and technology, 20. Substance physical state or concentration suitability the data provided below should not be construed as implying a legal guarantee. Experimental investigation on the properties of concrete with plastic pet bottle fibres as fine aggregates ms. Cleaned, recycled pet fl akes and pellets are in great demand for spinning fi ber for carpet yarns, producing fi berfi ll and geotextiles. In fact, pet is the most widely recycled plastic in the. Pet is a clear, strong, and lightweight plastic that is widely used for packaging. This resin is commonly used in beverage bottles and many injectionmolded consumer product containers. It was first synthesized in north america by dupont chemists during the 1940s. These plastics are a type of thermoplastic polymer resin, useful in various applications including in synthetic fiber. Manufacturers like it because it is strong, safe, transparent, and versatile. Pet is one of the most recycled thermoplastic, and has. Thermal properties of plastic materials material formula coefficient of thermal expansion x106 k1 heatdeflection temperature 0.
Along these lines, they have obtained b1 certification of the german din41021 and m2 certification french nfp507 standard. Recycled thermoplastic polymers due to the ideal properties of the thermoplastic polymers such as corrosion resistance, low density, high strength, and userfriendly design, plastic usage has become much higher than the usage of aluminum or other metals. Overview of materials for polyethylene terephthalate pet. Tecapets superior chemical resistance, non staining characteristics, and distinct lack of centerline porosity, makes it a desirable material for a variety of applications especially in the food industry that might involve. Thermoforming petg does not require drying prior to forming and has rapid thermoforming cycle times. Engineering properties of polyethylene introduction a fundamental understanding of material characteristics is an inherent part of the design process for any piping system. Thermal and mechanical properties of recycled pet and its blends. Therefore, to determine the exact density of plastic, it is. Polyethylene terephthalate pet is a chemically stable polyester and its use has risen dramatically in the last few decades with a multitude of applications, ranging from food and drink containers to the manufacture of electronic components 176,196 176 196 and as fibres in clothes. For solving the disposal of large amount of recycled plastic material, use of plastic in concrete industry is considered as feasible application. An example is the weathering of plastic pipes report tr1899 by the plastic pipe institute, which warns of the large differences in environment for different locations in the usa. Electrical properties of plastics professional plastics. Pet is a clear, strong, and lightweight plastic that is widely used for packaging foods and beverages, especially conveniencesized soft drinks, juices and water.
Polyethylene terephthalate an overview sciencedirect topics. This study involved 86 experiments and 254 tests to determine the efficiency of reusing waste. Thousands of consumer products, beverages and food items are delivered and packaged within this material. The amount of plastic consumed annually has been growing steadily and becomes a serious environmental problem. Polyethylene terephthalate pet or pete is a generalpurpose thermoplastic polymer which belongs to the polyester family of polymers. Jun 25, 2003 polyethylene terephthalate polyester petp is widely known in the form of biaxially oriented and thermally stabilised films usually referred to by their main brand names mylar, melinex or hostaphan.