000			01859nam a2200205Ia 4500
008			220216s9999 xx 000 0 und d
100			_aKarnika de Silva K G
245		0	_aDepolymerized natural rubber as a processing aid
260			_bJournal of the Rubber Research Institute of Sri Lanka _c1996
300			_a38-53
520			_aThe development of a commercially viable, light coloured, non toxic grade of depolymerized natural rubber by the Rubber Research Institute of Sri Lanka (proprietary) has led us to carry out research and development work on the potential industrial applications of depolymerized rubber, for example, as a speciality rubber in raw rubber blends to improve processability and certain physical properties due to its covulcanizable characteristics. The effects of percentage of depolymerized rubber on the processabilityand vulcanization characteristics are discussed. The results show that the use of depolymerized rubber in controlled amount enhances the processability and lowers the power requirement without adversely affecting the properties of the compounds. Also, the results obtained with the vulcanized mixes demonstrate that the behaviour of depolymerized rubber is comparable to synthetic polyisoprenes and is an improvement over ordinary processing oils. Results show that the incorporation of certain percentages of depolymerized rubber in the formulations can significantly improve the abrasion resistance. Clearly, if depolymerized natural rubber can surpass the exixting processing aids in quality and price, then a much larger market is potentially available world wide.
650			_aDepolymerization
650			_aLow molecular weight
650			_aNon extractable
650			_aNon toxic
650			_aVulcanizable processing aid
700			_aSilva S M C E
700			_aVitharana L P
942			_cJS
999			_c56808 _d56808