Research Article

Innovative Application of Biopolymer Keratin as a Filler of Synthetic Acrylonitrile-Butadiene Rubber NBR

Table 1

The compositions of the mixes under investigation.

ContentSymbol
StandardSample ISample II

ZnO [phr]55
Keratin [phr]5
Keratin + ZnO [phr]5 + 5

Other ingredients.
Acrylonitrile-butadiene rubber NBR (Nipol N41)—100  phr, sulfur—2,5  phr,  dibenzothiazyl disulfide (MBTS)—1  phr, Polnox N—1  phr, Stearin—2  phr, ethylene glycol—2  phr, and phr—part by hundred rubber.