000			01352nam a2200205Ia 4500
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100			_aIbrahim S
245		0	_aChemical degradation of natural rubber latex in acidic medium catalysed by CoCl2 and (NH4)2 Fe(SO4)2
260			_bJournal of Rubber Research _c2015
300			_a61-71
500			_aSource Year: 2015
520			_aLiquid natural rubber (LNR) is a derivative of natural rubber (NR) which has a molecular weight of less than 50,000 g/mol. In this study, LNR was prepared via chemical degradation reaction using hydrogen peroxide and sodium nitrite as reagents in latex solution. Compared to the reaction without catalyst, molecular weight of LNR obtained was found to decrease approximately three and two times in the presence of cobalt chloride (CoCl2) and ferrous ammonium sulphate ((NH4)2Fe(SO4)2), respectively. Using the method described, the degradation reaction generates functional groups such as hydroxyl and carbonyl in the LNR chains. In the presence of these catalyst, the hydroxyl groups are decreased and contrarily carbonyl groups in the LNR chains are increased.
650			_aCobalt chloride
650			_aFerrous ammonium sulphate
650			_aLiquid natural rubber(LNR)
650			_aRedox reaction
700			_aMustafa A
700			_aTan K S
942			_cJS
999			_c55493 _d55493