This work reports the use of bio-based lignin as agreener accelerator in nitrile rubber compounds by partial replacement of hazardous, carcinogenic synthetic ingredients. Acrylonitrile butadiene rubber (commonly known as Nitrile or NBR is most widely used elastomer due to its superior chemical resistance. NBR’s ability to resistance to various fuels and withstand a range of temperatures, makes it an ideal material for various applications like hose, seals, grommets, gaskets, tank linings and in various industries. During vulcanization process, various types of accelerators are used to enhance the curing rate and added into a rubber compound to increase the speed of vulcanization and to permit vulcanization to proceed at lower temperature and with greater efficiency. Most of the conventional rubber accelerators used for curing of rubber, produce nitrosamine during and after processing. Accelerators like TMTD (Tetra methyl Thiuram Disulfide) are hazardous and carcinogenic, which creates harmful effect during rubber products manufacturing stage, application stage as well as after rubber product completes its usable life. Here experiments were done to see the effect of lignin addition by partial replacement of conventional Sulfenamide and Thiuram type Accelerator.We have investigated the effect of bio-basedlignin as accelerator and it is evident that the lignin along with other conventional accelerator found to reduce the curing time, improves scorch safety and can replaces 75% accelerator without affecting much on mechanical properties. This is useful to rubber industry for minimizing the pollution along with cost reduction due to use of thislow-costbyproduct of paper industry.
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