In the present work, we describe the use of high energy ball milling technique on ground rubber as a mean for recycling of scrap tire rubber. Cured rubber powder was successfully devulcanized under the application of impact mechanical energy. Progress of mechanochemical de-crosslinking at different milling times was monitored by measuring extracted sol fractions and crosslinking densities of milled samples. The reclaiming action of 2-butanol, added to the rubber powder during mechanical milling, was evaluated comparing solubility properties of samples milled in alcohol with sample treated without any chemical additive. Mechanical properties of a vulcanized blend containing devulcanized polymer and fresh rubber indicate a good homogenization of the milled material with the virgin matrix. It was also observed, by IR spectroscopy, that at long milling time significant oxidation side reactions occurred during milling processing, introducing carbonyl groups to the structure of the polymeric network.
|Pages (from-to)||11 - 16|
|Number of pages||6|
|Publication status||Published - 2001|
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Environmental Science(all)
- Polymers and Plastics