Polymer chemistry

Chromate The Prefix word “poly” implies to the word many, but even ions of two atoms are usually referred to as polyatomic. Majority of the Polyatomic ions that are used with Oxygen will have the word “ate” in them. Nitrate is an example of a Polyatomic Ion. Polyatomic Ions are referred to as a radical, and less commonly, as a radical group. There are many differences between a polyatomic ion and a compound. Polyatomic ions are composed of two or more atoms that are linked to covalent…

Kevlor A synthetic material which has high tensile strength and used in manufacturing of tires and also as a reinforcement agent in manufacturing of protective parts like helmet etc…, HISTORY In 1930’s a chemical company called DuPont prepared commercially succeful super polyamide. Actually in 1964 Stephanie kwolek discovered kevlor in DuPont laboratory while doing research on the high performance chemical compounds. Kevlor is patented Stephanie kwolek in 1966 which is used by many police…

QUESTION: Give the Preparation, Properties and Applications of any four POLYMERS 1. Polyethenics ( Vinyl Resins) They are obtained by the polymerization of monomers containing the ethylenic bond (-C=C-) I. Polyethylene ( PE ) Polyethylene is one of the simplest and most inexpensive polymers. It is a waxy, chemical inert plastic. It a thermoplastic formed by the addition polymerization of ethylene. There are two types of polyethylene  Low Density polyethylene (LDPE) By using free radical…

thermal characteristics and withstands temperature upto 200 oC without any significant degradation. Characteristics such as transmittance (T), absorption (A), refractive index (n) and extinction coefficient (k) are also reported. Keywords: ); Flexible Polymer Substrate, Polydimethylsiloxane (PDMS), Thin Films, Organic Light Emitting diodes (OLEDs),Transmittance. 1. Introduction Organic light-emitting devices (OLED) have attracted…

objects which we use in our everyday lives such as phones, cars, cooking utensils, computers and shoes, (http://www.slideshare.net). Plastics are a group of material which can either be synthetic or naturally occurring. Plastics are considered as polymers a substance which has a molecular structure with a large number of units bonded together, (http://www.chemheritage.org). Most plastics are made from crude oil which is a liquid derived from petroleum, (http://science.howstuffworks.com).…

Topical ointments Introduction: An ointment is semi solid topical preparation applied to external application with rubbing effect. It may be a vehicle or media for a drug or it may serve like a protective or emollient. Ointments show plastic flow characteristics. When the ointment is applied it is definite yield value and the resistant to flow drops as the applications to the skin is continued. Body: • Uses : There are two types of ointments: A- Medicated: used to treat different…

One of the most unusual substances in chemistry, slime blurs the line between solid and liquid stages of matter. Slime and other substances like it are common in the average everyday life today, and yet are almost unnoticed. Slime is a colloid, a substance that shares both liquid and solid traits. Many colloids are polymers, which are a certain type of molecule. Although slime may seem simple, in reality it is quite complex in the microscopic standpoint. Slime can also be referred to as a…

the data they obtain (“Occupation”). As soon as I finished high school, I was interested in studying Chemistry; I wanted to research and experiment. Then, it was when I learned about the engineering field and started to feel appealed by it. Between all specializations that the chemical engineering program has, I believe that the development of new types of energies and the development of polymers are the most interesting fields of the major. On the one hand, the rise of new types of energies is…

post-secondary education majoring in chemistry. After graduating, Carothers continued his studies as an organic chemists. He went on to earn a Master's degree and a Ph.D. Carothers was interested in electronic theory of valence, explaining how atoms bonded together. In 1924, Carothers wrote a paper on electronic natures of the carbon-carbon double bond for the Journal of the American Chemical Society. It sparked his interest in theoretical and experimental chemistry. Shortly after February 6th…

Now for all this history there are certainly important leaders of chemistry that need to be given some credit. First there is Jābir ibn Hayyān who is also known as Gerber. He was a chemist from the eighth century AD. Geber became one of the first people to use scientific methods to study and experiment. Through his experiments and studies he is thought to have discovered hydrochloric acid, sulphuric acid, and nitric acid. He also discovered what is now called Aqua Regia, which is an acid that is…