Effect of elemental sulfur in the crosslinking reaction of poly(vinyl chloride) with tetramethyl thiuram disulfide |
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| Authors: | Eduardo Arias-Marín Luis F Ramos De Valle Oliverio Rodríguez-Fernndez Jesús Rodríguez-Velzquez |
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| Affiliation: | Eduardo Arias-Marín,Luis F. Ramos De Valle,Oliverio Rodríguez-Fernández,Jesús Rodríguez-Velázquez |
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| Abstract: | The effect of elemental sulfur (S8) and tetramethyl thiuram disulfide (TMTD) on the chemical crosslinking of PVC is studied. The tensile strength, elongation at break, and gel content of crosslinked and uncrosslinked PVC molded samples, cured at different times in hot air, are evaluated. It was found that crosslinking PVC with TMTD improves its mechanical properties, and adding S8 produces a slight improvement. Also, the S8 presence accelerated the PVC/TMTD crosslinking reaction when the crosslinking reaction was carried out under shear forces, but not when the curing was done in hot air, where the S8 retards the process. |
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