Annually, hundreds of thousands of used rubber are disposed, that is a greatlyenvironmental issue throughout the world due to the difficulty in recycling them, In this study,we focus on the thermal treatment of used rubber in order to break linkages in their structure anduse in the composition with natural rubber. The result shows that the linkages were broken aftertreating at a condition of 200°C and 10-15 minutes (in air). The mechanical and physicalproperties of the blends of natural rubber and recycled rubber of 20 wt-% are not much differentfrom those of only natural rubber. Moreover, the addition of some compatibilisers such as aliquid rubber or vegetarian oil can improve the properties and morphology of the blends. Thisblend was successfully applied into manufacturing some technical and civil products.
