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INHIBITION AND RETARDATION IN THE FREE REDICAL ADDITION POLYMERISATION OF STYRENE
Member rating: No Rating | Words: 1775 | Submitted: Thu Nov 08 2007
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INHIBITION AND RETARDATION IN THE FREE REDICAL ADDITION POLYMERISATION OF STYRENE Abstract The aim for this experiment is to find out how inhibitors or retarders can affect the process of polymerisation. As an initiator, a system of Benzoyl Peroxide was applied. Benzoquinone (inhibitor) and Nitrobenzene (retarder) were used in this experiment. This experiment contained three different samples all consisting Styrene and Benzoyl Peroxide. An inhibitor was added to the samples to conduct the experiment: Sample A was left as is; Sample B had Benzoquinone added; and Sample C had Nitrobenzene added. Each sample was then observed to measure its rate of polymerisation. It was found that the initial rate of polymerisation was almost steady for all samples within the first 20 minutes. From then, the rate of polymerisation changed in each sample. In Sample A, where no inhibitor or a retarder was used, the rate of polymerisation was dramatically increased. Whereas in Sample...
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