Low-density polyethylene

Purpose for further research While bans have been signed into law and several groups and coalitions have arisen to advocate continued research into the adverse effects microplastics, there is still thousands of tons of micro-bead pollution present in aquatic reservoirs such as the Great Lakes. Such a mass of plastics, which are able to migrate with currents to new locations and settle into the sea floor, has left researchers and environmentalists alike unsure of how to resolve their current

with a triangular ‘chasing arrow’ symbol with a number inside as pictured in figure 2, in the appendix. The first plastic is PET/PETE, Polyethylene Terephthalate. PET is used in most water and soda bottles and also in some packaging. PET is susceptible to leaching and bacterial growth, so it should not be reused, but it is easily be recycled. High-Density Polyethylene, HDPE, is a stiff plastic that is often used to make products such as milk jugs, oil bottles, toys, and plastic bags. HDPE is also very

high density polyethylene (HDPE). The HDPE is used in making the plastic bag and shampoo containers since it has long virtuality and unbranched polymer chains which make it more dense as well as very crystalline hence stronger (Nicholson 1997). The HDPE is stiff, strong, tough as well as resistant to moisture. Plastic wraps Plastic wraps comprises of low density polyethylene(LDPE). The LDPE polymers have a crucial chain branching comprising extended side restraints hence being less density as well

Since 1985, America has used plastic bags due to them being waterproof and having handles making them easier to carry goods. Paper and plastic have always been a huge controversy in supermarkets through the preference of customers. Some customers prefer having the paper bags standing up straight in the trunks of their cars. Other customers prefer the plastic bags because of the handles making it easier to walk home and carry their goods. Although both preferences are fine, all customers know the

durables (e.g. tires, building materials, furniture, etc.) and disposable goods (e.g. medical devices). Diversity of plastics applications is related with their specific properties, low density, easy processing, good mechanical properties, good chemical resistance, excellent thermal and electrical insulating properties and low cost ( in comparison to other materials) [1]. Polyesters are a class of synthetic polymers built up from multiple chemical repeating units linked together by ester (CO-O) groups

2014, 311 million tonnes of plastic were produced (Detloff & Istel 2016), and half was disposed of within the year (Singh & Sharma 2016). The most commonly used and plentiful polymers are: high-density polyethylene, low-density polyethylene, polyvinyl chloride, polystyrene, polypropylene and polyethylene terephthalate (Andray & Neal 2009 as cited in Li, Tse and Fok 2016). These polymers account for 90% of total plastic production, and as a result are the most common plastics found in aquatic environments

it is important to adopt synthetic membrane with better anti-seepage performance. There are ten-odd types of synthetic membranes developed worldwide, including high-density polyethylene (HDPE), low-density polyethylene (LDPE), polyvinyl chloride (PVC), and chlorinated polyethylene (CPE). These synthetic membranes have an extremely low permeability with a seepage coefficient of ≤1 × 10-12 cm/s [4]. With its strong resistance to chemical corrosion, mature manufacturing process, easiness to weld on-site

move. An object at rest stays in place unless a force is brought to it. 2nd law; force equals mass times acceleration (F=ma). 3rd law; every action has the same opposite reaction towards the first action. Generally increasing temperature lowers the density and viscosity, so it decreases the air resistance (Qoura.com). Handkerchiefs can be made out of any materials such as cotton, cotton-synthetic blend, synthetic

handle, low in cost, less in weight etc. Approximately, 30-35% of milk is used in direct form, rest of milk is packed in various packaging form, like Glass bottle, Plastic bottle, Tetra pack, plastic pouch etc. As per data from total milk production 146.3 million tons, approximately 40 million tons milk is used for packaging milk for drinking purpose. This milk is packed in half litter and one litter pouches, which are made of conventional plastics (Low-density polyethylene and Linear low density polyethylene)

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]