Insulated bottles

Two solutions, initially at 25.08°C, were mixed in an insulated bottle. One consisted of 400mL of a weak monoprotic acid solution of concentration 0.200 mL. The other consisted of lOOmL of a 0.800mol of NaOH per liter of solution. The temperature rose to 26.25°C. How much heat is evolved in the neutralization of one mole of the acid Assume that the densities of all solutions are 1.00 g/cm3 and that their specific heat capacities are all 4.2 J/g K. Actually, these assumptions are in error by several percent, but they nearly cancel each other. 

A 3% solution (by weight) of hydrogen peroxide in an insulated bottle is caused to decompose by adding a small amount ot a catalyst (MnO ). How warm does the solution become The heat of formation of H2O2 (aq) is 45.65 kcal/mole. 

Two solutions, initially at 25.08 °C, were mixed in an insulated bottle. One consisted of 400 mL of a weak monoprotic acid solution of concentration 0.200 mol/L. The other consisted of 100 mL of a solution having... 

DuPont had been granted rights to grant non-exclusive sub-licences of the ICI Patents. Union Carbide approached DuPont in October 1942 for a sub-licence, whilst simultaneously contracting to supply the Navy with PE, building a 500-ton PE plant, and then improving the process and product. By the end of the war. Union Carbide had increased their capacity to six times that of DuPont, who were now making 750 tons per annum. Applications were found in extmded film, coated paper, wire and cable insulation, bottles, and pipes. 

Household goods, packaging, cable insulation, bottles and much else... 

Tubing, film, bottles, cups, electrical insulation, packaging. 

Polyvinyl Chloride (PVC) 1940 M-H VG G G G Extrusion, injection, rotational, slush, transfer, compression, blow mold Pipe conduit and fittings, cable insulation, downspouts, bottles, film... 

Low density polyethylene (LDPE). This is one of the most widely used plastics. It is characterised by a density in the range 918-935 kg/m and is very tough and flexible. Its major application is in packaging him although its outstanding dielectric properties means it is also widely used as an electrical insulator. Other applications include domestic ware, tubing, squeeze bottles and cold water tanks. 

Polyethylene is an inexpensive thermoplastic that can be molded into almost any shape, extruded into fiber or filament, and blown or precipitated into film or foil. Polyethylene products include packaging (largest market), bottles, irrigation pipes, film, sheets, and insulation materials. 

In America there are promising signs for certain polymers. For example, poly(ethylene terephthalate) drinks bottles can be cleaned and recycled to give an acceptable grade of PET resin in a process that is economically viable. The recycled polymer is used as carpet fibre, furniture stuffing, or insulation. Waste nylon can also be recycled profitably. 

Plastics and Rubber Weekly No. 1776, 5th March 1999, p.lO INSULATION PANELS TO ABSORB BOTTLE WASTE... 

Over 4 billion PETP bottles will be available for colleetion across Europe in 1999. PUR Products has introduced technology into the UK which involves glycolysis of postconsumer PETP into materials for the manufacture of rigid urethane foams for building insulation. This application offers a substantial new market for aromatic polyester polyols derived from glycolised PETP recyclate. PUR(PRODUCTS)LTD. 

PE is used in manufacturing flexible bottles, films, sheets, and insulation for electric wires. 

Low density polythene is chemically inert and tough but flexible and a poor eonductor of electricity. Hence, it Is used in the insulation of eleetriclty canylng wires and manufaeture of squeeze bottles, toys and flexible pipes. 

In contrast, PET end-use markets have been developing for at least 10 years. When the PET bottle was introduced in 1978 and was collected in states with deposit laws, the industry for recycling them and reusing them began to develop. PET resins can be reused to make polyols for insulation and unsaturated resins for bathtubs, shower stalls, boat hulls, and auto panels. Reclaimed PET is also used for strapping, paint brushes, geotextiles, fibers for fiberfill and carpets, and other textile applications. 

Freeman Chemical uses about 25 million lb of postconsumer PET bottles and film scrap to make polyols for the production of rigid foams. The company estimates that more than 50% of the laminate foam insulation used for construction is made from recycled material. 

Table 9.4 shows the uses of styrene. These are dominated by polymer chemistry and involve polystyrene and its copolymers. We will study these in detail later, but the primaiy uses of polystyrene are in various molded articles such as toys, bottles, and jars, and foam for insulation and cushioning. Styrene manufacture is a large business. With a production of 11.4 billion lb and a price of 30C/lb styrene has a commercial value of approximately 3.4 billion. 

Table 11.6 shows the uses of TA/DMT. TA or DMT is usually reacted with ethylene glycol to give poly(ethylene terephthalate) (90%) but sometimes it is combined with 1,4-butanediol to yield poly(butylene terephthalate). Polyester fibers are used in the textile industry. Films find applications as magnetic tapes, electrical insulation, photographic film, and packaging. Polyester bottles, especially in the soft drink market, are growing rapidly in demand. 

Typical HDPE—blow-molded products bottles, cans, trays, drums, tanks, and pails injection-molded products housewares, toys, food containers, cases, pails, and crates films, pipes, bags, conduit, wire and cable coating, foam, insulation for coaxial and communication cables... 

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