[보고서] cellulose Synthetic Polymers / Chapter 3. S
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Chapter 3. Synthetic Polymers 3.1 Early ...
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[보고서] cellulose Synthetic Polymers / Chapter 3. S
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레포트 cellulose Synthetic Polymers / Chapter 3. S
Chapter 3. Synthetic Polymers 3.1 Early ...
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Chapter 3. Synthetic Polymers 3.1 Early Synthetic Polymers The earliest synthetic polymers, that is, polymers made by humans, specifically, the cellulose derivatives. The very first synthetic polymer was of course leather, a modified natural polymer, an artificially crosslinked form of the proteins found in animal skins. Leather tanning was discovered thousands of years ago, but this page is about some synthetic polymers. These are the cellulose derivatives. They are also derivatives of a natural polymer, cellulose. Cellulose derivatives are forms of cellulose, a polymer found in wood, cotton, and paper, which have been chemically altered. Scientists first started to make them in the second half of the nineteenth century, long before we really even knew what a polymer was. 3.1.1 Cellulose Nitriate The very first came about when a scientist reacted cellulose, in the form of cotton, with nitric acid. The result was cellulose nitrate. Often times, as...
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