Abstract
Dipiperazine thiuramdisulphide (DPTD) prepared in the laboratory using piperazine, triethyl amine and carbon disulphide as reactants acts as an accelerator for the vulcanization of natural rubber. The DPTD synthesised in our laboratory was characterized by FTIR, CHNS and the estimation of amine value. Results of the MTT assay test shows that the DPTD is a safe (non-carcinogenic) chemical. For comparable dosages of the accelerator, the DPTD based latex and dry natural rubber (NR) vulcanisates show improved mechanical properties as compared to tetramethylthiuram disulphide (TMTD) based vulcanisates. DPTD may be considered as a safe replacement for the nitrosamine generating TMTD in natural rubber based formulations.
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