Manufacturing Cycle and Environmental Impact The most common form of polyethylene is petroleum based or olefins based; as before mentioned polyethylene compounds have a wide commercial applicability and are made from non-renewable resources (Harding, Dennis, von Blottnitz, Harrison, & S.T.L., 2007). Its manufacturing processes are regarded as energy intensive and release significant amount of CO2 and heat into the atmosphere (Broderick, 2008). Next a little more detailed description of polyethylene’s
required use. Polymer-Polyethylene is partially crystalline as well as amorphous because it has crystalline and amorphous regions. Also it has linear chains so this is the simplest structure compared to a branched or network chain. This can be of an advantage to it over other types of materials as its good toughness and elongation makes it very significant in the engineering industry as it can be moulded or extruded into shapes such as pipes which are made of HDPE. Polyethylene is a thermoplastic so
investigation was to formulate nitrile butadiene rubber (NBR)/high density polyethylene blends (HDPE) blends using industrial waste (MW) and compatibilized by Chloroprene rubber (CR). Results indicated that the minimum and maximum torque increased with increasing HDPE amount in the blends, whereas scorch, and cure time showed the decreasing trend. Increment in HDPE increased the tensile strength, modulus, tear strength, hardness and crosslink density. % tensile strain, % compression set and abrasion loss
When people think of a healthy lifestyle, they tend to think of people that live in the gym everyday and are probably vegan or vegetarian. Being healthy isn’t about living in gym every day for hours on end; it actually is the exact opposite. Having a healthy lifestyle isn’t a hard thing to do. Eating healthy is probably the hardest of them all though. Who doesn’t love a nice greasy cheeseburger, loaded down with some mayonnaise and all the fixings? Unfortunately, eating like that and doing little
Metabolic syndrome (MetS) is a combination of unfavo- rable health factors including abdominal obesity, dys- lipidemia, hypertension and glucose intolerance [1,2] and is strongly associated with increased risk of cardio- vascular disease (CVD) and type 2 diabetes [1,2]. One of the key drivers in the development of MetS is obesity [3]. In recent years, the global prevalence of obesity has increased at alarming rates, and MetS and its con- sequences have become a major public health burden [4,5]. This
Cholesterol High cholesterol is the best known of all the many threats to a healthy heart. When excess amounts fatty like plaque substance build up along the walls of the arteries, you face a significantly higher risk of a complete blockage, leading to a heart attack or stroke. At normal levels, cholesterol is not a bad thing. On the other hand, its an essential material used by the body to make cell walls and produce hormones, such as testosterone and estrogen. The body produces its own supply
We have all heard about cholesterol in thousands of heath articles. Cholesterol effects heath of everybody around the world. Our blood cholesterol level has a lot to do with the possibilities of getting heart disease. High cholesterol is one of the biggest threats and the best known for heart disease. Heart disease is the number one killer of people in the United States. Each year, more than a million Americans have heart attacks, and about half of that number die from heart disease. In order to
that 71 million Americans have high cholesterol, and of those, only one-third of them have it under control (CDC, 2011). A reduction in LDL cholesterol has been shown to decrease the prevalence of strokes and heart attacks. That being said, it has also been shown that cholesterol levels above 200mg/dL put an individual at twice the risk for coronary heart disease than persons with levels 180mg/dL or less (Mann, 2014). There are numerous risks associated with high cholesterol, luckily many factors
trans fats are not a force to be reckoned with and have many repercussions to ignorant consumption. The unstudied and unrestrained early use of trans fats in food products have today’s society addicted to the taste-enhancing substance. Heart diseases, high cholesterol, obesity, strokes, heart attacks and diabetes are all linked to the over-consumption of trans fats. The negative repercussions on the American economy are a possibility but are not steep enough to stand by and watch the American public
German Chemist Hans von Pechmann first synthesized Polyethylene by accident in 1898 by heating diazomethane. His colleagues characterized the waxy substance polyethylene due to the fact that they recognized that it consisted of long ethene chains. It was then first industrially synthesized by accident in 1933 by applying extremely high pressure to ethylene and benzaldehyde. Over the years, development of polyethylene has increased due to the additions of catalyst. This makes ethylene polymerization
Recycling means collecting and sorting waste for the purpose of producing new products. In Malaysia, the recycling program was officially introduced on December 2, 2000 and the Ministry of Housing and Local Government (ministry) has determined that the 11 November of each year as National Recycling Day. Recycling process involves a variety of solid waste including plastic. Plastics is the solid waste that cannot be decomposed, so the recycling process of this material can help reduce the quantities
Polyethylene Polyethylene (PE) is one of the most commonly used polymers which can be identified into two plastic identification codes: 2 for high-density polyethylene (HDPE) and 4 for low density polyethylene (LDPE). Polyethylene is sometimes called polyethene or polythene and is produced by an addition polymerisation reaction. The chemical formula for polyethylene is –(CH2-CH2)n– for both HDPE and LDPE. The formation of the polyethylene chain is created with the monomer ethylene (CH2=CH2). The
4.1.6. Different Forms of Chicory a) Hand Cut Chicory Roots: The farmer harvests the chicory roots and cuts it manually sun dries in the field for about 20-25 days. Hand Cut Chicory Roots are mostly preferred in domestic market. As these are manually cut, the size and shape of these roots are non-uniform. These are used in preparing roasted chicory powders and chicory granules. Packaging is done in Jute bags of 50 kg. Moisture: 14-16% Age of Product: < 1 Year Extractability: Min 70-74 % Taste:
Recycling is process and step in collecting and sorting waste for the purpose of producing new products. In Malaysia, the recycling program was officially introduced on December 2, 2000 and the Ministry of Housing and Local Government (ministry) has determined that on 11 November of each year as a National Recycling Day for Malaysia. Recycling process has involves a variety of solid waste including plastic. Plastics is the solid waste that cannot be decomposed, so, through the recycling process of
What is BPA? According to WebMD: BPA is a chemical that has been used to harden plastics for more than 40 years. It's everywhere. It's in medical devices, compact discs, dental sealants, water bottles, the lining of canned foods and drinks, and many other products.More than 90% of us have BPA in our bodies right now. We get most of it by eating foods that have been in containers made with BPA. It's also possible to pick up BPA through air, dust, and water.BPA was common in baby bottles, sippy cups
Recycling of Polyethylene Terephthalate In the United States, over 245 million tons of municipal solid waste (MSW) was produced by consumers in 2005. This is approximately 4.5 pounds of trash per person per day.[3] This same year, 79 million tons of waste were recycled, a dramatic increase from 15 million tons in 1980.[3] Of the total MSW in 2003,11.1% (26.7 million tons) was plastic. Although only 3.9% of plastics disposed in 2003 were recycled, PET was recovered at a rate of 25%.[4] There
harnessed for heating purposes in industries and at homes. On the contrary, this incineration causes production of carbon dioxide which accelerates the global warming and its effects. The carbon dioxide gases are curbed only by burning the polymers at high temperatures. Recycling. It is highly beneficial that polymers are reusable after recycling because this property reduces the demand for crude oil and disposal problems. On the other hand, this activity is highly expensive and difficult
Introduction Plastic has found its way into every house and office, it’s found in many home appliances and office equipment. The reason for increased use of Plastic is that it has replaced Glass, wood and metals and it’s relatively cheap. Plastic is thrown away after its use and that creates a huge problem regarding the disposal of the plastic. This has resulted in the need for recycling plastic in order to avoid its disposal and to re-use it. The first time used plastic is known as virgin grade
polyalkene has a waxy texture. This type of compound for the most part utilized in the field of research and production in the petrochemical and organic chemistry industries. The production of polyolefin was started in the research laboratories. Polyethylene was the first created polyolefin in 1933 at Imperial Chemical Company by E.W. Fawcett and R.O. Gibson. The production of polyolefin is expected to achieve 100 million of metric
A regular plastic bag can take over 1,000 years to decompose properly, according to most sources found on the internet. Normal plastic bags are made from petroleum. The supermarket bags are made from high density polyethylene (HDPE), while the thicker bags are made from low density polyethylene (LDPE). Unlike HDPE, LDPE can not be recycled. Plastic is so durable that EPA scientist say that every bit of plastic ever made still remains on this earth to this day. Plastic bags can come with a whole