Charles goodyear biography summary worksheet answers
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Vulcanisation is a chemical process through which the physical attributes of natural or synthetic rubber are upgraded. During this process, rubber is heated at to degrees Celsius in the presence of sulphur, accelerator and activator. This cross-linking forms a more stable and stronger polymer. The tensile strength of the vulcanised rubber is much higher and it could easily resist getting swelled and eroded. It also remains elastic even during a greater range of temperature and weather conditions.
The entire method of vulcanisation turns the rubber into a smaller size without causing any alteration to its original shape. In this shrunken condition, the rubber hardens, and hence there are lesser chances of deformation. Read ahead to learn more about the properties of natural rubber and why it leads to the invention of the vulcanisation of rubber.
A Brief History of Rubber
There’s no specific person who invented rubber. Christopher Columbus, the legendary Italian explorer and navig
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The History of the Invention of Plastics
{A} Natural polymers include such familiar substances as silk, rubber, and cotton. Plastics are artificial polymers. 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, aircraft, medical supplies, and recreational items. The list could go on and on and it is obvious that much of what we have today would not be possible without plastics.
{B} In the early part of the twentieth century, a big boom occurred in polymer chemistry when polymer materials such as nylon and Kevlar came on
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Charles Goodyear Facts & Worksheets
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Charles Goodyear was a self-taught American chemist and uppfinnare who pioneered the vulcanization of rubber. It took Goodyear ten years before he made rubber that did not melt in the summer or crack in the winter. Goodyear experienced failures and hardships throughout his journey with rubber, but his perseverance and obsession pushed him to man it useful for all of us.
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