Advantages And Disadvantages Of Parkesine

The plastic Grace and I chose was polyethylene terephthalate. It is used for water and soft drink bottles, peanut butter jars, and other impact-resistant bottles as well as textiles.[1] PET is a semi-crystalline, thermoplastic polyester.[6] Its mechanical properties include excellent tensile and impact strength, chemical resistance, clarity, processability, color ability and thermal stability. PET is mechanically processed by extrusion, injection molding, and blow molding.[1]

In fact, many of the major plastics used today began when commissioned to be used for the war effort (Freinkel, 6). When plastic was first brought to The United States, the American people loved it. Not only can plastic imitate other materials, but it is also much more affordable. Overall, plastic is cheap. The leap in plastic produced from the ‘40s until now is extremely substantial. For instance, in 1940 plastic was hardly used, in 1960 a single American used close to 30 pounds of plastic per year, today each individual uses more than 300 pounds of plastic per year (Freinkel, 6). A major impact on the amount of plastic used is directly related to the way Americans, starting in the 1940s, were now able to mass produce plastic products. For instance, a single plastic comb making machine could reproduce ten combs in less than one minute (Freinkel, 22). Overall, plastic is relatively inexpensive and it is made for mass manufacture. Considering this it is east to see why plastic became so popular in the first place, it was a plastic miracle. However, there is a direct relationship between the amount of plastic produced and the amount of plastics that are being polluted into the

Plastics are also called polymers, are produced by natural products like oil, natural gas or coal.

The synthesized plastic polymer PHA is a natural organic polymer derived from bacteria. These synthesized plastic polymers have a plethora of functions and benefits, but its most important function is its use in improving water quality.

The average American creates about one hundred-thirty pounds of trash a month, and an article in the journal Nature estimates that global solid-waste generation will triple, to eleven million tons a day, by the year 2100 (Semuels). Plastic does not break down; it’s not biodegradable nor does it

Plastics are synthetic polymers that are made from crude oil and are non-degradable and do not decompose. Polyhydroxybutyrate (PHB) is a type of plastic that is produced by microorganisms known as Alcaligenes Eutroplus. It has similar physical properties to that of the typical everyday plastic, Prolypropylene. These properties include: When heated it will melt and is able to be moulded into shape. However, they are chemically different. These

Plastic is everywhere. People use it every day, in everything. There is no possible way to live 100% without plastic in this day and age. Plastic is made with natural oils. Monomers form when molecules connect together, then chain up to create Polymers. When this happens, it creates the substance everyone knows of -- plastic. Plastic is polluting the ocean and contaminating our drinking water, but at the same time plastic has proven to be convenient and versatile for our everyday use.

Post World War II plastic started to become a way of life. Early plastics were made from cellulose and also known as "green plastics" but most of today's plastics are made of hydrocarbon molecules that is used from the refining of oil and natural gas. Depending on how the plastic is made will decided wheter it's used for something like sandwich wrap or making some sort of plastic handle on a tool.

Song JH, (2009) states that “Many different materials are used for packaging including metals, glass, wood, paper or pulp, plastics or combinations of more than one material as composites” (p 364). What this means is that most of the packaging materials we use for packaging contain products that are very hard to de compose and end up in landfills. In order to achieve bio degradable packaging we should consider bioplastic polymers which “are generally still much higher than that of their traditional plastic counterparts” (364). Bioplastic polymers cost much more than regular polymers we use but, if we can help our planet and company become more environmental friendly, we should take that step and use bioplastic polymers for our

Plastics of the 20th century should consider the health of the environment. Over the past 153 years http://edition.cnn.com/2007/TECH/11/14/fsummit.climate.plasticbags/ of producing plastics there is an evident impact of the environment. The Earth’s ocean has 5.25 trillion pieces, which is equivalent to 269,000 tons floating on the surface. Some of plastic is as small as 1cm2; this makes this every difficult to reverse the already existing impact of humans. This large scale disaster also affects the wildlife. 100,000 marine animals and 1 million birds have to suffer the consequence of plastic pollution every year. Globally a million single-use plastic bags are used every minute, this number is also increasing. http://oceancrusaders.org/plastic-crusades/plastic-statistics/

Andrady, A. L., & Neal, M. A. (2009). Applications and societal benefits of plastics. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 364(1526), 1977–84. doi:10.1098/rstb.2008.0304

In 1839 Edwin Simon discovered a new chemical named Styrol which he had isolated from a natural resin (EPSA, 2014). Twenty-five years later it was demonstrated that this hard material was actually a polymer, though the monomer was unstable. By the 1920s, new developments had stabilised it with the addition of small amounts of aromatic amines and phenols. This stabilisation led to the study of polymerisation throughout the 1920s. Thus it was not the discovery of the polymer which was important but the later development of it.

If you look around yourself you may notice that a great amount of the things around you are made up of plastic. You may also notice that all these plastic objects are different. For example, some are more durable while others are more delicate. There are many different types of plastics that exist; different plastics are used for different things. Polypropylene is a very common plastic, one that in some way, shape or form, we likely use everyday. According to a Britannica article, polypropylene is “a synthetic resin built up by the polymerization of propylene” (Britannica, 2016). What this really means is that polypropylene is a synthetic compound made up of propylene that goes through the process of polymerization, which is when monomers are

more sustainable, manufacturers should consider making more Bioplastics. This is plastic that is biodegradable and safer for the environment because it is able to be broken down by bacteria. This is more sustainable for the environment because the resources used to make the plastic are going back into the earth.

"Plastic" entered the world through chemistry in 1909 and was originally coined to describe Bakelite, the first fully synthetic resin. What make's plastic so unique is when it is heated it can be molded but it retained its shape when cooled (Reddy, 2010). The modern plastic bag was not possible until the accidental discovery of the first industrially practical method of polyethylene synthesis in 1933. Fast forward to today, the use and