Elastomeric composites are among the key engineering materials that find wide application in industrial and domestic applications. The work deals with the preparation of elastomeric composites based on natural rubber (NR) filled with 20 phr cellulose (CEL). The reason for preparing a composite filled with biopolymer is the environmental point of view, to replace synthetic polymers at least partially with natural materials. When using CEL in an elastomeric matrix, high processing temperature can cause problems, leading to degradation of the CEL. The solution could be the preparation of polymer composites at lower temperatures. The influence of processing temperature (50 – 90 °C), torque (MT) during the preparation of elastomeric composites filled with CEL was investigated. Rheological tests made it possible to determine the optimal processing parameters and properties of elastomeric composites filled with CEL. Hardness, mechanical properties were also studied on the prepared NR/CEL composites.

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