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1172791 
Journal Article 
Fatigue crack growth of elastomers in the swollen state 
Cho, K; Jang, WJ; Lee, D; Chun, H; Chang, YW 
2000 
1 
Polymer
ISSN: 0032-3861 
Elsevier Science Ltd 
41 
1 
179-183 
English 
WOS:000083372700020 
The values of crack growth rate for styrene–butadiene copolymer (SBR) and acrylonitrile–butadiene copolymer (NBR) under dynamic tearing condition were measured in both dry and swollen conditions. For swollen samples, tearing energy was adjusted by a simple geometrical factor λs2 (where λs is the linear swelling ratio), in order to take into account the reduction in number of molecular chains per unit fracture plane. The crack growth rate of a swollen elastomer was observed to be significantly increased over the measured range of tearing energy compared to that of an unswollen elastomer. The effects of the type of elastomer, degree of swelling, and crosslinking structure on fatigue crack behaviour of swollen elastomers are discussed. 
Elastomer; Swelling; Fatigue