Journal of Metals, Materials and Minerals
Publication Date
2012-07-01
Abstract
Two series of natural rubber/carboxylated styrene butadiene rubber (NR/XSBR) (80/20) nanocomposites containing different loadings of carbon black (CB) (3-9 phr) and carbon nanotube (CNT) (0.1-0.4 phr) have been prepared by a latex stage compounding method. Before mixing with NR/XSBR blended latex, CB and CNT were dispersed and stabilized in water by ball milling with the aid of surfactant. The obtained compounded latex was cast into sheet on a glass mold and thereafter cured in an oven at 80°C for 3 h. The tensile properties (tensile strength, modulus at 300% strain, elongation at break), dynamic mechanical properties (loss tangent, storage modulus) and thermal stabilities (degradation temperatures, % char) of the vulcanizates were evaluated. The results showed that the addition of either CB or CNT enhanced the tensile strength, modulus at 300% strain, storage modulus and thermal stability, but reduced the elongation at break of the NR/XSBR blend in a dose dependent manner, except that the tensile strength peaked at an optimum filler level, declining at higher filler loadings. The CNT-filled nanocomposites provided a comparable tensile strength with that of the CB-filled nanocomposites but at about 25-fold lower loading. This reinforcing effect is attributed to the greater aspect ratio and specific surface area of CNT.
First Page
77
Last Page
85
Recommended Citation
Boonmahitthisud, A. and Chuayjuljit, S.
(2012)
"NR/XSBR nanocomposites with carbon black and carbon nanotube prepared by latex compounding,"
Journal of Metals, Materials and Minerals: Vol. 22:
No.
1, Article 11.
Available at:
https://digital.car.chula.ac.th/jmmm/vol22/iss1/11