Polymeric Materials Essay

We found that Polypropylene was our 5th unknown. Polypropylene (C3H6) or more commonly referred to as PP, is used for labeling, packaging, textiles, and stationery. In 1957, the crystallization of polymer was discovered. Soon fabric was made from the polymer, and was in high demand. It can also be used for moldings of cars, film, tape, foam and carpet. Polypropylene can not be glued to any objects or itself, and so it is melded. After Polyethylene, Polypropylene is the highest produced synthetic plastic. Polypropylene also holds up well over time, which is one of the reasons that it is the second most produced plastic. The melting point is between 130-171 degrees celsius. Because polypropylene is tough and flexible it can be used as an engineering plastic. Finally, polypropylene can be used be manufactured into a living hinge. A

The Graduate is a 1967 film directed by Mike Nichols who won an Oscar for his direction.  This hit of the 60's focuses on the development and the maturing of the ultra-naïve college graduate Benjamin Braddock.  This movie is about "just one word...Plastics."  Mr. McQuire sums up this entire movie when he tells Ben that there is "a great future in plastics."  In this film the relationships, except the one between Ben and Elaine, are like plastic because they are not real, they are molded, and they are artificial. 

If you have a home with a garage, you have so many possibilities in terms of transforming this area. In order to make this area a better place to be, whether it’s for work or fun, these steps can be taken.

The HDI/PCN/BD stoichiometric ratio for the synthesis of the final polymer was kept as 4:3:1. The polymer solution was passed through a Teflon filter in order to

Through the mixing of compounds and the use of a boiling technique three different polymers were formed. Polystyrene was formed by additional polymerization. The other two were formed through condensation polymerization, the difference being that Bakelite had a cross-linked design occur in the polymerization process, whereas nylon 6, 6 did not.

A look at the history of polymers reveals that many of the first discoveries were accidental. Since these discoveries, a whole new area of chemistry

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

Polypropylene inherent properties of high firmness, great elasticity and inactivity toward acids, antacids and solvents has secured its position in an extensive variety of shopper and mechanical items (Kawasumi et al., 1997). The density of PP is between 0.895 and 0.92 g/cm³. Therefore, PP is the commodity plastic with the lowest density. With lower density, moldings parts with lower weight and more parts of a certain mass of plastic can be produced. Unlike polyethylene, crystalline and amorphous regions differ only slightly in their density. However, the density of polyethylene can significantly change with fillers (Tripathi, 2001). Polypropylene are likewise adaptable and can have high stretching before breaking. Polypropylene is also the

Polyester fibers are produced from a chemical reaction between an acid and an alcohol. When this reaction occurs two or more molecules combine to make a large molecule in which the structure repeats itself throughout its length. Polyester fibers commonly form very long molecules that are very sturdy and strong (Madehow, 2016).

In 1937 two German workers produced a new polymer that had advantages over existing plastics made from polycondensation and was not covered by existing patients like that of Wallace Carothers polyesters patent. This polymer was polyurethane. Polyurethanes belong to the family of reaction polymers, which also consist of unsaturated polyesters epoxies and phenolics, it is produced by reacting an isocyanate containing two or more isocyanate groups per molecule with a polyol containing on average two or more hydroxy groups per molecule in the presence of a catalyst or by activation with ultraviolet light. The properties of polyurethane are directly related to the polyol, and isocyanates used. For instance, high amounts of crosslinking produce

"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

When many units of repeating molecules react together, monomers, the reaction will yield a product in the form of a polymer (Chemistryexplained.com, 2016). The ‘discovery’ of polymers began in 1920, with the belief of Hermann Staudinger, that there existed a molecule consisting of many smaller repeating molecules, under the name ‘macromolecule’ (Chemistryexplained.com, 2016). Nowadays, polymer and plastic demand is even higher than that of copper, aluminium, and even steel, due to their versatile applications in many different industries (Matse1.matse.illinois.edu, 2016). Polymer synthesis can be either synthetic or natural, and can produce many forms of polymers, depending on the involved monomers, and the intended purpose for said polymers (Essentialchemicalindustry.org, 2016). This process involves three main steps, initiation or separating of the double bonds of the to-be-monomer, propagation or the joining of these monomers, and termination, when the desired chain length has been reached (Chemistryexplained.com, 2016). History is brimful with scientific discoveries both intentional, and completely accidental, however, it can be seen that the majority of polymers were crafted due to societal demand, although the method of actual synthesis initially may have been serendipitous. Two of the polymers scientifically researched and synthesised due to demand of the times were synthetic rubber, and Bakelite (Chemistryexplained.com, 2016).

Though polymers are a very beneficial thing now, but In the future I believe that at the very best that they will only hold the same value to society. I say this because polymers are not a very complicated item and it would be difficult to better this technology in a drastic way. The only further advancements I see are people discovering ways to make polymers stronger, more durable and better suited for extreme and

People tend to take plastic for granted. It’s everywhere, from bags to water bottles to toys to machine parts. About 300 million tons of plastic is produced in the world each year, which is about the weight of all the adults on the planet. More has been produced in the last decade than in all of history until 2000. Last year alone, people around the world used over 50 billion disposable water bottles and around 1 trillion plastic bags. All the waste must go somewhere, though, and unfortunately, that somewhere is usually our oceans. People can help reduce the amount of plastic ocean pollution and prevent the destruction of the world’s ecosystems and the poisoning of seafood by taking simple steps like recycling, limiting plastic use, buying from more sustainable companies, and participating in cleanup events.

Nanofibers are a stimulating new class of material used for a couple of regard included applications, for instance, remedial, filtration, deterrent, wipes, singular care, composite, pieces of attire, assurance, and essentialness amassing. Extraordinary properties of nanofibers make them sensible for a broad assortment of employments from therapeutic to client things and current to bleeding edge applications for avionics, capacitors, transistors, sedate transport structures, battery separators, essentialness storing, control modules, and information development