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The most common form of cellulose acetate fiber has an acetate group on approximately two of every three hydroxyls. This cellulose diacetate is known as secondary acetate, or simply as "acetate". After it is formed, cellulose acetate is dissolved in acetone, forming a viscous solution for extrusion through spinnerets (which resemble a shower ...
Cellulose diacetate film was first created by the German chemists Arthur Eichengrün and Theodore Becker, who patented it under the name Cellit, from a process they devised in 1901 for the direct acetylation of cellulose at a low temperature to prevent its degradation, which permitted the degree of acetylation to be controlled, thereby avoiding total conversion to its triacetate.
They report making a kilogram of PLA with only 27.2 MJ of fossil fuel-based energy and anticipate that this number will drop to 16.6 MJ/kg in their next generation plants. In contrast, polypropylene and high-density polyethylene require 85.9 and 73.7 MJ/kg, respectively, [ 67 ] but these values include the embedded energy of the feedstock ...
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The origins of the company lie with two brothers, Henri and Camille Dreyfus.In 1912, they set up "Cellonit Gesellschaft Dreyfus and Co" in Basel, Switzerland.In 1916, the brothers were invited to live in Britain by the British Government, to produce their recently developed cellulose acetate dope for the war effort; the canvas skins of aircraft of the time were sealed and made taut with ...
Products such as calcium acetate, sodium acetate, acetic acid, and acetic anhydride became the basis for the company’s platforms. During World War II, RDX, a powerful explosive, was manufactured for the U.S. government at Holston Ordnance Works at Tennessee Eastman sites. At the peak of production near the end of the war, the ordnance plant ...