Spectroscopic studies on reaction between squalene and vulcanizing agents in the presence and absence of zinc-2-mercaptopyridine-N-oxide

C.C. Pierre, Rabin Datta

    Research output: Contribution to journalArticleAcademicpeer-review

    4 Citations (Scopus)

    Abstract

    Model compound vulcanization in combination with reversed-phase high-performance liquid chromatography and NMR spectroscopy was used to elucidate the reactions of accelerator, sulfur, zinc stearate and zinc-2-mercaptopyridine-N-oxide (ZPNO) in natural rubber vulcanization. Studies of different curing ingredient formulations in squalene have been done to determine the influence of each component during the vulcanization. It was found that 2-mercaptopyridine-N-oxide bridged adducts (R-Sx-Pyr(O)) were formed when squalene was heated in the presence of sulfur, curing ingredients and 2,2′-dithiobis(pyridine-N-oxide) (PyrO-S2-PyrO). Possible interactions of R-Sx-Pyr(O) with carbon black have been proposed.
    Original languageEnglish
    Pages (from-to)201-213
    Number of pages13
    JournalRubber chemistry and technology
    Volume77
    Issue number2
    DOIs
    Publication statusPublished - 2004

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