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Vulcanization: Vulcanization is very widely used in rubber technology to improve the properties such as low tensile strength, plastic nature, thickness etc. by adding some chemicals like sulphur, hydrogen sulphide, benzene chloride etc. it is done by heating of raw rubber with sulphur at 100: 140 degree centigrade temperature. The added sulphur combines chemically as the double bonds of different rubber springs. Sulphur can also bring about vulcanization without affecting the double bonds in the polymer molecule, by eliminating H2S. The rate of vulcanization of rubber is quite slow and also depends upon the types and quality of rubber used. But, by using certain organic compounds called accelerators, vulcanization reaction speed up.
what is inert paired effect? Explain with examles
Chemicals in food Several chemicals are added to food for their preservation and improving their appeal. These involve flavorings, antioxidants, fortifiers, sweeteners, dyes, e
need to know common methods of preparing acetone/propanone. Need to include chemical equation for reaction that produces that molecule.
What is vulcanization The process of vulcanization was discovered by Charles Good Year in 1839. He found that when natural rubber is heated with sulphur, its tensile strength,
priming and foaming.
Vacancies A vacancy is a lattice position that is vacant due to the atom is missing. It is formed when the solid is formed. Vacancies are simply empty atom site.
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what is pyrolysis curve..
give an example of a compound whose empirical formula & molecular formula are same.
describe the steps involved in a sampling operation of a chemical sample
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