000			01215nam a2200193Ia 4500
008			220216s9999 xx 000 0 und d
100			_aChough S H
245		0	_aKinetics of sulfur vulcanization of NR, BR, SBR, and their blends using a rheometer and DSC
260			_bJournal of Applied Polymer Science _c1996
300			_a449-454
520			_aThe relationship between vulcanization reactivity and chemical structure was studied using a rheometer and DSC for natural rubber (SMR 5CV), butadiene rubber (BR 01), styrene-butadiene rubber (SBR 1501), and their blends. The overall rate of the vulcanization was SBR > BR > NR. This was the same trend as the number of allylic hydrogens in the statistical repeat unit of the rubber used. Becasue the corresponding rate constant for an allylic hydrogen was very similar regardless of the rubbers, it was found that the vulcanization condition for a compounded rubber could be predicted by comparing the number of allylic hydrogens. The activation energy of the vulcanization was calculated for each rubber also.
650			_aBlends
650			_aBR
650			_aNR
650			_aSBR
650			_aSulfur vulcanization
700			_aChang D H
942			_cJS
999			_c61875 _d61875