Thermal-Oxidative Aging Resistance and Water Absorption of Natural Rubber Latex/Methyl Methacrylate-Grafted-Natural Rubber Latex Blends

Abstract:

Abstract. The natural rubber latex (NRL) concentrate was mixed with 10～50 parts per hundred rubber (phr) of methyl methacrylate-grafted-natural rubber latex having a methyl methacrylate content of 49% (MGL49), prevulcanized, and then cast to obtain prevulcanized NRL/MGL49 films. The leached films of prevulcanized NRL/MGL49 were aged in an hot-air oven for comparison of the mechanical properties before and after aging, whereas the thermal decomposition of these films in an atmosphere of air was carried out in a thermo-gravimetric analyzer, and the films were also immersed into water to obtain water absorption. Results showed that the incorporation of MGL49 improved the thermal-oxidative aging resistance of natural rubber latex film when the MGL49 content was less than 50 phr, the water absorption increased with the increment of MGL49 content, and the NRL/MGL49 film containing 10phr of MGL 49 has a best thermal-oxidative stability and highest water absorption also.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 1755-1758
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.1755
• Online since: July 2012
• Authors: Guang Lu, He Ping Yu
• Keywords: Blend, Film, Methyl Mathacrylate-Grafted-Natural Rubber Latex, Natural Rubber Latex (NRL), Prevulcanization, Thermal-Oxidative Aging, Water Absorption

References

[1] Z. C. Yuan: Latex Products Technology (Agricultural Press, China 1993).

[2] F. Cataldo: Recent Res. Dev. Polym. Sci. Vol.2 (1998), p.421.

[3] A. D. T. Gorton: NR Technol. Vol.15 (1984), p.7.

[4] J. L. Collins and A.D.T. Gorton: NR Technol. Vol.15 (1984), p.69.

[5] G. Lu, Z.F. Li, S.D. Li and J. Xie: J. Appl. Polym. Sci Vol.85 (2002), p.1736.