| Abstract: | The effect of modifying natural rubber (NR) using unsaturated polyester resin (UPR), by compounding on a two-roll mill, is investigated in this study. Both commercial resin and resins prepared in the laboratory under controlled conditions have been employed. After testing several possible catalyst systems, the benzoyl peroxide/dimethyl aniline (BPO/DMA) system was identified as a suitable catalyst system for UPR for blending with NR. The extent of unsaturation in the UPR influences the physical properties of the blend negatively. The UPR is found to have a positive effect on the aging properties of natural rubber. |
