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dc.contributor.advisor Motha, J
dc.contributor.author Wanasinghe, MC
dc.date.accessioned 2011-05-24T11:32:05Z
dc.date.available 2011-05-24T11:32:05Z
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/854
dc.description.abstract This project reviews the degradation of polychloroprene based adhesives. The first step in the oxidative degradation is the allylic hydrogen abstraction leading to different radicals. Some hydroperoxides are formed and then decomposed into alcohol, ketones, acid chlorides and acids. Acid value and tintometer colour measurements are used to identify the amount of acid released and hence the extent of degradation. The influence of phenolic antioxidants on the oxidative degradation is studied. Phasing occur in a polychloroprene based adhesive when the metal oxide and the resin particles are not fully reacted. Eventually these unreacted particles settle down at the bottom of the container. Among other factors the polarity of the solvent system solvent strength, material type the shape and the size of the resin and metal oxides are also important. A physical method to minimize phasing is studied.
dc.format.extent 61p. en_US
dc.language.iso en en_US
dc.subject CHEMICAL ENGINEERING-THESIS
dc.subject THESIS
dc.subject POLYMER TECHNOLOGY
dc.subject ADHESIVES
dc.subject ; DEGRADEATION
dc.subject ANTIOXIDANCE
dc.title Effect of phenolic antioxidents on polychloroprene based adhesives
dc.identifier.faculty Engineering en_US
dc.identifier.degree MSc en_US
dc.identifier.department Department of Civil engineering en_US
dc.date.accept 1999-10
dc.identifier.accno 72264 en_US


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