000			01570nam a2200217Ia 4500
008			220216s9999 xx 000 0 und d
100			_aMenon A R R
245		0	_aProcessability characteristics and physico-mechanical properties of natural rubber modified with cashewnut shell liquid and cashewnut shell liquid-formaldehyde resin
260			_bEuropean Polymer Journal _c2002
300			_a163-168
520			_aNatural rubber (NR) has been modified with 5-15 phr each of cashewnut shell liquid (CNSL) and cashewnut shell liquid-formaldehyde (CNSLF) resin with a view to studying the processability characteristics of the mixes and physicomechanical properties of their vulcanizates. The plasticizing effect of these additives in NR was shown by the reduction in melt viscosity and power consumption during mixing in a Brabender Plasticorder compared to that of unmodified NR. Despite the reduction in chemical crosslink density, the vulcanizates containing 15 phr of CNSL and 5-10 phr of CNSLF showed higher tensile and tear strengths and elongation at break. The higher values of activation energy for thermal decomposition of the vulcanizates containing 15 phr each of CNSL (301 kJ/mol) indicate improvement in thermal stability of NR vulcanizates in presence of the modifiers.
650			_aCashewnut shell liquid
650			_aNatural rubber
650			_aPhysicomechanical properties
650			_aProcessability characteristics
700			_aAigbodion A I
700			_aBhagawan S S
700			_aMathew N M
700			_aPillai C K S
942			_cJS
999			_c65751 _d65751