Biodegradable plastic

Plastic is a new foundation for human life: food comes packaged in plastic, sports are played on grass made out of plastic, supplies are wrapped in plastic, and accessories are encased in plastic. Plastic also has a way of getting into trees, bushes, oceans, animals, and makes the environment look awful. As of watching our backyards and oceans get filled with plastic bags, we have realized the trouble plastic causes for the environment. San Francisco, California, Laredo, and Eagle Pass have…

Have you ever wondered where your weekly amounts of waste go? The answer here is landfills. A landfill is an area of land, above and/ or underground, that allows for ginormous amounts of trash to pile up. As positive as the thought of a trash reduction property may sound, they are potentially placing a hazardous threat to our overall environment. A great deal of the items that remain the landfills are often times unrecyclable, and unable to destroy naturally. This issue might be placed to a halt…

New York City has a long history with accumulation of garbage. In the1900’s the NYC government was using the ocean a trash disposal.Daily New York City generates 7,000 tonnes of residential mixed solid waste, I am sure the number is larger when private companies garbage is included. Every year New York produces 14 million tonnes of trash. To deal with such a large number of waste the government uses a public and a private systems investing $1.5 billions every year. The government methods to…

Plastic bags, worth the risk? A lot of states have passed laws that require stores to charge at least 5 cents per plastic bag which has some people fuming. Less 0.2 percent of plastic bags make up world pollution. Do we really need to debate a fee? There is other trash that is being dumped into the ocean, which is bad for the environment. Plastic bags also create jobs for people in factories and if we charge a fee on bags some people would not buy bags. So there should not be a fee on…

Plastics are a material currently being used all around the world. As the production of this synthetic polymer has increased, it has become almost impossible to completely avoid interaction with a plastic material. With the discovery of this practical material, positives and negatives were discovered too. Plastics have a strong effect on the environment and human health. During manufacturing, additives are put in that can be harmful to each of these important aspects. Due to their synthetic…

2. Basic theories and principles 2.1 Chemical vapor deposition 2.1.1 Definition of chemical vapor deposition Chemical vapor deposition (CVD) is a versatile process which is widely applied to produce coatings, powders, fibers and monolithic components [1]. Applying the chemical vapor deposition, it is possible to produce alloy and compounds of metals and nonmetal materials. Chemical vapor deposition can be defined as the deposition of a solid on a heated surface from a chemical reaction in the…

polyurethanes were first developed by Otto Bayer and coworkers in 1937. Shortly thereafter, Schollenberger and coworkers used formula modification to prepare elastomeric polyurethane products from Bayer's products that were like nylon or other engineering plastics in physical characteristics. PUs are widely used in coatings, flexible and rigid foams, elastomers, and composites. Reasons for the use of polyurethane coatings include: high performance characteristics such as flexibility, toughness,…

According to cerakoteguncoatings.com (2017), Cerakote is a Polymer-Ceramic coating that can be applied to metals, plastics, polymers and wood. Cerakote is used on; knives, weapons, tools, some electronic covers, glasses and anything durable that needs a tough coating. This ceramic thin-film coating is intended to offer an appealing finish with unequaled performance. The ceramic coating of Cerakote provides the advantage of having extraordinary; adhesiveness, pliability, corrosion and wear…

In gloves industry, and for the maximum care of hands, Polyurethane-made gloves has shown the most remarkable effect than any other material. Known as one of the most versatile quality polymers, Polyurethane gloves are in huge demands at the consumer end. Well, what are the qualities that make a Polyurethane glove the best? To be honest, you can't find much stronger grip (and no sticky sensation) in a glove made by Polyurethane than any other material. The other qualities of this material are…

The polyurethane segments show high intersegment attraction such as hydrogen bonding and may be able to crystallize and form hard segments. In such polymers hard segments with Tg well above normal ambient temperature are separated by polyol soft segments, which in the mass are rubbery in nature. Hard and soft segments are arranged alternate along the polymer chain. Fig.7. Polyurethane chain configuration [32] 4.2.2. Polyurethane properties and advantages for product development…