This website uses cookies to ensure you have the best experience. Learn more

Polyethylene And Polyterephthalate Are Outdated Essay

1343 words - 5 pages

Poly(ethylene terephthalate) Outdated: Is the World Ready for a New Plastic?

Abstract:
This paper explains the structure of polymer poly(ethylene terephthalate) also known as
PET. It states the properties of the plastic as well recycling methods. My goal was to find
out what makes PET the number one plastic, both in consumption as well as the most
recycled. I also searched for new polymers that are being created by scientists and
compare them to PET to see if there was a plastic out there that is better for the
environment. I found a few alternatives that would be able to replace PET but aren’t
being used. I also found a fire-proof polymer called BHDB which can replace the
previously used polymer.
Poly(ethylene terephthalate), a plastic found in soda bottles, peanut butter jars,
and even pillow and sleeping bag filling [1], is the most used and recycled plastic. As
Americans we use about 2.5 million plastic bottles per hour. Most of this plastic that we
are using, though, ends up not only in land fields but in oceans and other undesirable
places, only a small portion of it is actually recycled. Plastic are long chains of polymeric
molecules. Unlike paper or other compounds, plastics are commonly used for their
qualities such as durability weight, processibility, cost, corrosion, and impact resistance.
2
The basic composition of polymers includes oil, coal and natural gas though recently they
have been more petroleum-based[1]. About 140 million tons per year are produced and a
lot of that ends up as waste in land fields [1].
There are many characteristics PET has that contribute to the popularity of this
polymer. Among those characteristics are lightweight, low density, low cost, mechanical
toughness, durability, and impermeability. The cost of PET stands out a lot, the cost for
making PET is basically cents per pound and companies like this. Over 8 million pounds
of PET is manufactured in the U.S. alone. It is also the only polymer that can be
chemically recycled back to its starting material. It can also be downcycled, made into
other materials, some of those materials include polyoflefins, polystyrene, and tire
rubber. Recycling and downcycling all help reduce energy consumption. By recycling
you don’t have to make new materials and in doing so save the energy required for doing
so.
The basic molecular structure or poly(ethylene terephthaleate) can be seen in
figure one. This basic structure is repeated to form PET plastic. PET is made of polymers,
which contain co-monomers such as ethers, amide and aliphatic monomers. Having these
monomers makes it easy to biodegrade especially through the process of hydrolysis[1],
which is decomposition by the usage of water.
3
Figure one.
[2]
Some polymers, such as Poly(ethylene terephthalate), are easily degraded through
photo, thermal or biological means[1]. Photo degradation uses UV light to degrade
polymers. Two major factors are time and heat. Those two...

Find Another Essay On Polyethylene and Polyterephthalate are Outdated

Plastic Bags Should Be Substitued By a More Environmentally-Friendly Product

1437 words - 6 pages different types of polyethylene components such as high-density polyethylene, or HDPE and low-density polyethylene, or LDPE.[1] In the production of polyethylene, appropriate additives are added into the polymer for the purpose of preservation of the polyethene, or to customise the polymer component according to its later use. Examples of additives that are added are additives that enable the polymer to sustain towards oxygen and resistance to

Bioplastics: Polylactide aliphatic copolymer Essay

530 words - 3 pages . Both components can be obtained from renewable resources (e.g. glycol from glycerol by fermentation). Aliphatic polyesters have properties similar to those of polyethylene and polypropylene. They are odourless and can be used for trash bags, diapers, and cosmetics. Aliphatic polyesters are biodegradable but lack good thermal and mechanical properties.Polylactide aliphatic copolymer (CPLA) is made by copolymerising lactide with aliphatic

Hartman Industries Paper

1090 words - 4 pages are designing high-density polyethylene products, receiving raw materials, and molding material that mixes dye to create high-density polyethylene plastic pellets. The level of importance of each process varies by its severity to achieve customer satisfaction. Some processes, such as designing high-density polyethylene products, are very important. Hartman Industries must use a skillful design team to create innovative plastic designs. Another

Polyethylene Terephthalate or Polyester Cloting

1097 words - 5 pages Question # 1: PET (Polyethylene terephthalate) Definition: Polyethylene terephthalate which is commonly known as PET is a type of thermoplastics polymers resins. When PET is used in fabrics then it is also called as Polyester which is just like a clothing fabric. PET is lightweight, economical, non reactive and shatterproof that’s why it is highly valued packaging material. Despite its name it does not contain polyethylene. Polyethylene

Using Polymers to Replace Absorption Glass Mats

644 words - 3 pages , etc.), typical polymers considered for mats in recombinant VRLA batteries, were researched. They have been shown to have submicron diameters and are resistant to strong acids - both important properties for the mat within a VRLA battery. Polyamides were ruled out because they showed the least resistance to strong acids and polyimides cannot easily be made wettable. Polypropylene (PP) was chosen over polyethylene because of its higher thermal

Tote bags vs Plastic bags

684 words - 3 pages high density polyethylene or low density polyethylene depending on what type of bag it is. Plastic bags are not very strong and they will tend to brake if stretched.The properties of the materials that tote bags are made of are (canvas and jute) that it is strong, quick drying, resistant to shrinking, mould resistant and lastly it is lightweight. The properties of the materials that a plastic bag is made of( polyethylene) are that it is water

How Bulletproof Vests are Made

902 words - 4 pages a bullet. There are many components that go into making a vest. A vest-shaped sheet of advanced plastic polymers, called a panel, is composed of many layers of Kevlar or Spectra Shield. While, the layers of woven Kevlar are sewn together using Kevlar thread, the non-woven Spectra Shield is coated and bonded with resins. An example of a possible resin is Kraton. It is then sealed between two sheets of Polyethylene film. The panel is placed inside

Reactive Organotransition Metal Complexes Used In

3931 words - 16 pages most commonly used catalysts for polyethylene production. Hafnium catalysts show a lower activity and are less stable at temperatures above 50C than the zirconium analogs. These zirconocenes are synthesized through reduction of zirconium tetrachloride with organolithium compounds as exemplefied in Scheme 3.Scheme 3 Et2O ZrCl4 + 2Li(Cp) (Cp2)ZrCl2 + LiCl Et2O (Cp

Polymers

1574 words - 7 pages -density material. It is soft and pliable and has application ranging from plastic bags, containers, textiles, and electrical insulation, to coatings for packing materials. The opposite form of LDPE is HPDE or high-density polyethylene. The molecules in HPDE are tightly packed and are used in plastic tubing, bottles, and bottle caps.Fibers are another form of polymers. Natural fibers such as cotton, wool, and silk are used by many and have been

Standardizing a Sodium Hydroxide Solution

860 words - 3 pages solution. An indicator is an organic dye that is added to an acidic solution. The indicator is one color is in the acidic solution and another color in the basic solutions. An end point occurs when the organic dye changes colors to indicate that the reaction is over (Lab Guide pg. 141). Sample Calculations In this experiment three different equations were used and they are the Stoichiometry of Titration Reaction, Converting mL to L, and

Problems with Common Medical Implants

1763 words - 8 pages and stem and a plastic spacer. The metals used are mostly CoCr, austenitic stainless steels, Co–Cr–Mo alloys and Ti or Ti alloys, for their hardness, corrosion resistance, fracture toughness, low modulus and good machinability [1, 2]. The plastic spacer is typically made of polyethylene. The prosthesis is secured to the host body through either press-fitting or cementing . Biocompatibility of a material refers to “(i) an appropriate response of

Similar Essays

Polyethylene Essay

1213 words - 5 pages -proof vests. This is the product that we call polyethylene (also known as plastic), and as time goes on, more applications are being discovered and changing our world. What makes polyethylene so applicable? It is the ability to be altered in density to stretch or be strong, and not react with other chemical structures that gives polyethylene its ability to change our world today.Polyethylene (C2H4) is used almost everyday in people's lives as

Polyethylene: Manufacturing Cycle And Environmental Impact

1142 words - 5 pages Manufacturing Cycle and Environmental Impact The most common form of polyethylene is petroleum based or olefins based; as before mentioned polyethylene compounds have a wide commercial applicability and are made from non-renewable resources (Harding, Dennis, von Blottnitz, Harrison, & S.T.L., 2007). Its manufacturing processes are regarded as energy intensive and release significant amount of CO2 and heat into the atmosphere (Broderick, 2008

Uses Of Recycled Plastics Essay

781 words - 4 pages 59 years later (Cho, 2012). A trend in recycling is steadily growing greater and greater with the public. Beverage containers made of plastic are composed of polyethylene and polyethylene terephthalate, also known as PET. Polyethylene is reported as being the plastic that is recycled more often times than not by consumers. Tiny entrepreneur groups began recycling polyethylene and foreseen the hidden value that was available to them (Amos, 1993

An Improvement To Plumbing Pipes Essay

902 words - 4 pages ancient times, like the Roman Empire, were made of lead because it was a flexible and strong. After World War II it was declared unsafe because of lead poisoning. After WWII copper became popular because it is very easy to use and tough. Later, PEX, PVC, and iron pipes also became popular. PVC and copper pipes are mostly used today because the copper lasts long and the PVC pipes are affordable and easy to install by yourself. Cross-linked polyethylene