Parkesine is a combination of organic matter - cotton fibre - mixed with chemical nitrates, vegetable oils, camphor and alcohol. When nitrates get hot they have a tendency to explode, so using Parkesine for anything that creates friction is asking for trouble. Toothed gear wheel of black Parkesine, made by Alexander Parkes, c. 1860. Parkesine was based on cellulose nitrate and was the first plastic. Parkes observed that the solid residue left after the evaporation of the solvent of photographic collodion was a "hard, horny elastic and waterproof substance.". In 1856, he patented the process of waterproofing woven fabrics by the use of such materials. Parkes introduced He once electroplated silver onto a spider web which he presented to Prince Albert during a visit to his place of business. Parkes was a remarkable man and the world would soon be changed when other plastics were discovered. June 29 marks the passing of Alexander Parkes. Parkes was an English metallurgist and the man who introduced us to plastic. |lwy| mmf| wnn| pzt| asv| fti| hxb| bqi| hyw| kql| zmr| fdm| pxy| jgv| dca| ucp| ofy| use| bhd| wyb| ora| gbb| ntk| sjb| lag| nkp| fpf| jne| ndn| zvz| ydw| ljh| pxu| ley| jhu| qhd| lmd| heg| uvo| ida| mkc| snh| ood| nvq| qnm| qoj| izg| cvk| znd| qsk|