Advantages of paper: Versatile such as rigid‚ semi rigid and flexible material. It gives mechanical protection. It has good absorbent property. It provides a partial or complete barrier to light. Made from renewable resources. Recyclable and biodegradable. Disadvantages of paper: Negligible resistance to water vapor‚ gas and aromas. Not heat sealable. Poor tensile strength. Uses can be found in packaging all the main categories of food such as: Dry food products – cereals‚ biscuits‚ bread and baked
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(Q.)Give one example of each: metals and non-metals. (Ans) Metals: Copper. Non-Metals: Sulphur. (Q.)Name the metal‚ which is the best conductor of heat and electricity. (Ans) Copper. (Q.)Name the property by virtue of which metals can be drawn into thin wires. (Ans) Ductility. Q.)Name the gas produced‚ when metals reacts with acids. (Ans) Hydrogen gas. (Q.)What is the color of the copper sulphate solution? (1 Mark) (Ans) Blue. (Q.)State the nature of oxides
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from everyday items such as cups‚ milk bottles and plastic bags‚ to medical and laboratory equipment. All applications use different types of polymers such as polyethene‚ polyvinyl chloride and polypropene. Polymers‚ also‚ can be used as a fuel source by burning under controlled conditions to release heat energy and therefore electricity. Despite their popularity in manufacturing products‚ the use of them is not sustainable as most are non-biodegradable so they will not break down in landfill. In 2001
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polymers are also extensively used in medical packaging applications owing to its superior properties and accounted for 2‚271.3 kilo tons of demand in 2013. The report “Medical Polymers Market Analysis By Product (Resins & Fibers‚ Elastomers‚ Biodegradable Plastics)‚ By Application (Devices and Equipments‚ Packaging) and Segment Forecasts To 2020‚” is available now to Grand View Research customers and can also be purchased directly at http://www.grandviewresearch.com/industry-analysis/medical-polymers-market
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Concept: Law of Supply Law of supply stated that the quantity supplied of a good rises when the price of the good rises while other things equal. This shows that the quantity supplied is positively related to the price of the good. The supply curve is used to relate price of a good and the quantity supplied and the curve is upward sloping. The supply curve shows how much producers of the good offer for sale at any given price‚ holding constant all the other factors beyond price that influence
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BIOPOL Biopol is a biopolymer that is an environmentally friendly biodegradable plastic made from renewable resources (made naturally in plants from starch and glucose). Biopol is the brand name for a group of biopolymers often called PHAs or PHBs. The continual use of petroleum to make polymers for plastic will eventually run out and hence Biopol was introduced as a polymer replacement for petroleum. It is made from an organic substance known as Alcaligenes eutrophus which is a microorganism.
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behavior: Human Pollution. This behavior where people throw plastic‚ metal and leather wastes to the rivers or lakes; creates the well known term: Marine Debris. However‚ the animals that live in this beach and in other places are victims of one of the most dangerous elements: the plastic material including its characteristics that are so powerful‚ like: cheap‚ durable‚ lightweight‚ widely available; because if we join them as a group‚ the plastic takes four hundred years for destroying itself. So
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devices‚ plastics are now used in almost every aspect of everyday life‚ creating a much simpler and safer world. Although plastics carry hundreds of benefits‚ these do not completely counter the harmful effects that they have on the environment and on the health of humans. The amount of plastic that has been created since 2000 is nearing the total amount that was created in the entire last century‚ and as this demand increases‚ so does the knowledge of their environmental costs. Plastics are now known
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BIGGER AND BETTER IN PLASTICS Factory-assembled towers boast competitive advantages over those that are field-erected Cooling towers – bastions of wood‚ fiberglass‚ steel or concrete – could someday go the way of galvanized pipe‚ aluminum cable and other equipment that has been materially altered by plastics. It’s not that plastic cooling towers are new; on the contrary‚ they have been around for more than 30 years. Rather‚ it is the fabrication of these plastic structures in larger
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knowledge on how to solve this problem effectively. plastic is everywhere and the reason that plastic is everywhere is be ABSTRACT Plastic Pollution has become a global issue in our oceans. Although we hear about this from time to time the problem has grown tremendously beyond our knowledge. There are a growing number of animals dying each day due to plastic particles that either get stuck around their head‚ or that they swallow. If we do not stop plastic pollution in our oceans the ocean will eventually
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