Natural rubber and butadiene rubber blend using diblock copolymer of isoprene–butadiene as compatibilizer
Article first published online: 10 MAR 2003
Copyright © 1993 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 49, Issue 5, pages 807–814, 5 August 1993
How to Cite
Bualek, S., Ikeda, Y., Kohjiya, S., Phaovibul, O., Phinyocheep, P., Suchiva, K., Utani, K. and Yamashita, S. (1993), Natural rubber and butadiene rubber blend using diblock copolymer of isoprene–butadiene as compatibilizer. J. Appl. Polym. Sci., 49: 807–814. doi: 10.1002/app.1993.070490506
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 17 NOV 1992
- Manuscript Received: 12 DEC 1991
Blends of natural rubber (NR) and butadiene rubber (BR) have been studied with or without diblock copolymers of isoprene–butadiene (BIR). It was found that NR/BR blends displayed the optimal properties at about 4 wt % of BIR from the tensile measurements of NR/BR blends. Increase of molecular weight of BIR resulted in the decrease of tensile properties, but had no significant effect on their hardness. Abrasion resistance of rubber blends containing BIR was about 30% higher than that without BIR. The molecular weight of BIR did not show a remarkable effect on the abrasion index. Differential scanning calorimetry and dynamic mechanical analyses of rubber blends suggested a two-phase structure even in the presence of BIR. © 1993 John Wiley & Sons, Inc.