Most of the acid dyes belongs to following three main structural molecules, Anthraquinon type Azo dye type Triphenylmethane type. If this is the first set of questions you have done, please read the introductory page before you start.
Although pure nylon has many flaws and is now rarely used, its derivatives have greatly influenced and contributed to society. If you line these up and remove water between the -COOH and -NH 2 groups in the same way as we did with nylon-6,6, you get the structure of Kevlar:. A smaller number have been scaled up and offered commercially, and these are detailed below. Nylon is one kind of fiber used in tire cord. Thank you for helping to improve wiseGEEK!
These are applied from a strongly acidic to neutral pH bath. When dry, polyamide is a good electrical insulator. As well as this, Van-der-Waals bonds, dipolar bonds and hydrogen bonds are formed between dye and fibre. For clarity in pronunciation, the "i" was changed to "y". It was a joint effort. Learn something new every day More Info Initially he was allowed to focus on pure research, building on and testing the theories of German chemist Hermann Staudinger.
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The molecular weight and the degree of sulphonation of the dye molecule determine these dyeing characteristics. From fossil fuels or oil? And not only that, more industries are spanning up every day and with the new strategy of standard packaging of items to make them stand out among competitors, there has been a very sharp increase in the making of nylon 66 and demand of nylon materials such as whip, bracelet and flowers. In fact, it was the primary material used in parachutes and ropes during World War II for this reason. The other was a white elastic but strong paste that would later become nylon.
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