Polyethylene

Is bottled water better than tap water? Have you ever had any concerns about bottled water? Do you think that bottled water is better than tap water? Bottled water is water packed in plastic containers and sold for human consumption (Health Canada, 2013). Currently, the amount of bottled water consumed has increased considerably since many people feel it is safer drinking bottled water than tap water (Parent and Wrong, 2014). According to The Statistics Portal the global sale of bottled water

Executive Summary: Waste has become a global problem. It has become very necessary to address this problem, so that energy problems can be solved. 50 million tonnes of domestic waste is produced every year, and this is a health hazard. Domestic waste is nothing but paper, kitchen waste, and plastic. Plastic is the common term for a wide range of synthetic or semi-synthetic materials used for a huge and growing range of applications. We can find plastic in most of the items that we use today, such

concentrations was determined from the Least-Square fitting of the data. Introduction Para-xylene belongs to a family of aromatic hydrocarbons of industrial importance and can be polymerized to obtain parylene or as a starting point to the synthesis of polyethylene terephthalate, among other uses. The ability to measure and control its concentration in equilibrium with its o- and m- isomers is therefore of great importance (Fig. 1). For quantitative purposes internal standard method is of

Your whole life has been a lie. Commercials, parents, friends, and even some of your teachers have told you that bottled water is better than tap. Well bottle your emotions and listen to what i have to say. One can argue that bottled water is better than tap but their argument will not be as strong or convincing as mine will be to do the opposite, to convince you that tap water is better than bottled water. The discussion has been around for a while now and we all know that tap water is more beneficial

Littering is another problem with these bottles. When people get done using them they just throw them on the ground, for example, if you go to a ball game and you see everyone drinking Gatorade, soda, or water and then stay after and you will see all those bottles in the bleachers and on the field from the players. You start to realize that know one really cares about the environment anyone. Water bottles or just bottles in general are a big cause on the environment. Although many people do not care

Evian, Volvic, Aquafina, Hawaiian Springs, or Fiji, ring a bell? These are the names of famous bottled water brands. Nowadays, bottled water is extremely popular in America. “Approximately, 85 million bottles of water are consumed every day in the United States” (Gleick). The reason being that bottled water is convenient, reasonable, and seems healthy. However, the disadvantages of using bottled water outweigh its benefits; therefore consumers should refrain from buying bottled water. Bottled

EFFECT OF KAOLIN ON THE MECHANICAL PROPERTIES OF POLYPROPYLENE/ POLYETHYLENE COMPOSITE MATERIAL Samir Nassaf Mustafa ABSTRACT :- In this work, the mechanical and water absorption properties of polymer blend polypropylene (PP) and low density polyethylene (LDPE) at constant ratio (50/50) composites as a function of kaolin powder weight content in the grain size (100,120 µm) were investigated. Polymer composite was fabricated by mixing polymer blend ( PPLDPE) with (0, 1, 3 ,5, 10, 14) wt.% of kaolin

Back in the 1800s most waste that ships carried were dumped in our oceans without much thought. The difference from then to now is that the dump 200 years ago was biodegradable dump now about 14.4 million tons of our waste is plastic which is not always biodegradable according to the EPA and that number is rapidly increasing every year. Our oceans are massively being affected and so are we in ways unimaginable like the fact that our fish are ingesting chemicals that is in the plastics in the sea

The soda bottle is all to common today. It is made of polyethylene terephthalate (PET), a durable yet a feather light product. PET is used in many diverse products, such as polyester fabric, cable wraps, films, transformer insulation, generator parts, and packaging. It contributes to about 6.4 percent of the packaging industry and 14 percent of plastic containers, including but not at all limited to the common soft drink bottle. Making up for 43 percent of those sold, PET is the mostly used soda

PRODUCTION OF PET We utilize the rapidity of ester-interchange reactions during the production process. The acid (terephthalic acid) is converted to the dimethyl ester, which is further purified by distillation or crystallization. This is then allowed to react with the glycol by ester interchange. The reaction generally is a two-step reaction a. First, low MW polyester is made with excess of glycol to ensure that the hydroxyl end groups are formed and then the temperature is raised and pressure is