Journal
POLYMER DEGRADATION AND STABILITY
Volume 91, Issue 2, Pages 229-233Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2005.05.009
Keywords
lignin natural rubber; thermo-oxidative aging; crosslink density
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A series of carbon black filled natural rubbers containing lignin was tested from the view point of their thermo-oxidative aging. Lignin is biopolymer that belongs to the main components of wood. Mechanical properties and crosslink density of lignin stabilized vulcanisates were measured before and after thermo-oxidative aging for 24, 72, 168, 240 and 408 It at 80 degrees C. The results were compared with those from NR vulcanisates stabilized with the commercial rubber antioxidant N-phenyl-N-isopropyl-p-phenylene diamine (IPPD). The results obtained show that lignin exerts a stabilizing effect in carbon black filled natural rubber. Its effect is comparable with that of conventional synthetic antioxidant. Moreover, the addition of lignin increased the stabilizing effect of IPPD. (c) 2005 Elsevier Ltd. All rights reserved.
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