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|Type:||Artigo de periódico|
|Title:||The Photo-oxidation Of Epdm Rubber: Part Ii-the Photo-initiation Process|
De Paoli M.-A.
|Abstract:||Mechanistic aspects of the photo-oxidation of EPDM rubber are discussed. According to our results the photo-initiation step is undoubtedly due to impurities present in the crude rubber. These impurities include aliphatic and aromatic phenols, ethers, esters and ketones. The initiation step of a known impurity, viz. benzophenone, was studied. Although the mechanism of formation of the oxidation products is similar to that of other unsaturated rubbers a regeneration of the initiator in the absence of light is observed in contrast to other hydrocarbon polymers. This behavior is attributed to the presence of the ethylidene norbornene unit. © 1990.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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