Chapter 9 The World of Plastics and Polymers Overview • Plastics are all around us – Polymers‚ materials whose molecules consist of long chain of atoms • Natural • Synthetic • Use of material and impact on economy‚ lifestyle‚ and leisure – Word plastic to some carry connotation “cheap” or “tacky” – Synthetic polymers revolutionised modern life • eg plastics become important in automobile industry‚ some new plastics stronger than steel and resist corrosion‚ less dense than structural
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Deepawali is a festival of lights. It comes in the month of Kartik (October/November) on Amavasya day. It is celebrated in the memory of the return of Rama to Ayodhya‚ after 14 years of exile. He got victory over Ravan‚ the king of Lanka. Hence‚ people of Ayodhya illuminated the city to welcome their victorious Rama and express their joy ever since Deepavali has been celebrated with great pomp and show every year throughout the country. Deepawali is also considered as the festival of cleanliness
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Ocean Turns Into Plastic Island? Could Happen Have you ever wondered what happens to that plastic bottle or plastic bag that you throw away? What if I told you that the bag and the bottle are slowly killing off marine life and slowly turning our oceans into dumps? This is the case and the problem is only growing and everybody is responsible for it and everybody needs to pitch in and clean up this mess. We all use plastic because it’s convenient for us‚ but in the end it ends up killing the marine
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WHAT YOU CAN DO ABOUT PLASTIC POLLUTION Plastic bags and bottles‚ like all forms of plastic‚ create significant environmental and economic burdens. They consume growing amounts of energy and other natural resources‚ degrading the environment in numerous ways. In addition to using up fossil fuels and other resources‚ plastic products create litter‚ hurt marine life‚ and threaten the basis of life on earth. We are producing over 25 million tons of plastics per year in the United States‚ a trivial
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plastic pollution‚ the accumulation in the environment of man-made plastic products to the point where they create problems for wildlife and their habitats as well as for human populations. In 1907 the invention of Bakelite brought about a revolution in materials by introducing truly synthetic plastic resins into world commerce. By the end of the 20th century‚ however‚ plastics were found to be persistent polluters of many environmental niches‚ from Mount Everest to the bottom of the sea. Whether
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C. Description of appropriate liquids to feed an infant from a bottle D. Purpose of bottle-feeding II. A. Equipment Needed for Bottlefeeding 1. nursing bottles 2. nipples 3. bottle brush B. Preparing formula for Infant 1. Sanitary care 2. Using water from a well a. Notify health department to test water C. How to Bottlefeed 1. Holding your baby 2. Positioning the bottle 3. Knowing when your baby is full 4. Burping your baby after
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------------------------------------------------- Say no to plastics — Presentation Transcript * 1. SAY NO TO PLASTICS By Dibakar Bose * Plastics is one of the few new chemical materials which pose environmental problem. Polyethylene‚ polyvinyl chloride‚ polyester is largely used in the manufacture of Plastics Plastics is the general common term for a wide range of synthetic or semi synthetic organic solid materials suitable for the manufacture of industrial products .Plastics are typically polymers of high molecular
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Plastic is one of the most widely used products in the U.S. We use it to package consumer products‚ to charge our purchases with credit cards‚ to carry our food and drink‚ to build our toys and to even make our clothing! There are over 10‚000 different kinds of plastic in the world‚ and it is so versatile and can be mixed with so many other elements that its uses are limitless. But plastic takes up about 10% of our total waste stream‚ and it is composed mainly of the non-renewable resource petroleum
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Plastic Plastics are used on a daily basis throughout the world. The word plastic is a common term that is used for many materials of a synthetic or semi-synthetic nature. The term was derived from the Greek plastikos‚ which means “fit for molding.” Plastics are a wide variety of combinations of properties when viewed as a whole. They are used for shellac‚ cellulose‚ rubber‚ and asphalt. We also synthetically manufacture items such as clothing‚ packaging‚ automobiles‚ electronics‚ aircrafts‚ medical
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Plastic Pollution Introduction The world population is living‚ working‚ vacationing‚ increasingly conglomerating along the coasts‚ and standing on the front row of the greatest‚ most unprecedented‚ plastic waste tide ever faced. Washed out on our coasts in obvious and clearly visible form‚ the plastic pollution spectacle blatantly unveiling on our beaches is only the prelude of the greater story that unfolded further away in the the world’s oceans‚ yet mostly originating from where we stand: the
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