Effect of Compatilizers on Morphology and Properties of Natural Rubber/Polyvinyl Alcohol (NR/PVA) Blends

Abstract:

The natural rubber/polyvinyl alcohol (NR/PVA) blends containing various compatilizers grafted from NR were prepared using latex compounding techniques. The effects of various compatilizers on the morphology, mechanical properties and thermal behaviors were studied. The interface compatible performance of the blends were greatly improved with the presence of the compatilizers, and the phase dispertion of the blends achieved the best effect under the action of epoxidized natural rubber (ENR). The onset temperature of the thermal decomposition of ENR and graft copolymerization of methyl methacrylate (MMA) onto NR (NR-g-PMMA) increased obviously, but the maleic anhydride grafted onto NR (NR-g-MAH) drop obviously comparing to that of NR. The thermal stability of the blends were inferior to NR. With the presence of ENR, the tensile strength and elongation at break obtained great value which was ascribed the presence of the best phase dispertion, while the tear strength and shore A hardness obtained great value due to the addition of MAH-g-NR.

• Periodical: Advanced Materials Research (Volumes 960-961)
• Pages: 262-269
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.960-961.262
• Online since: June 2014
• Authors: Ke Chen*, Rui Wang
• Keywords: Blend, Compatilizer, Natural Rubber, Polyvinyl Alcohol

References

[1] Paul D R, Bucknall C B: Polymer blends: formulation and performance (John Wiley & Sons, Inc, 2000).

[2] Utracki L A, Favis B D: Polymer alloys and blends(Marcel Dekker, Inc, New York, 1989).

[3] Y uri S. Lipatov: Prog. Polym. Sci. Vol. 27(2002), p.1721.

[4] Carrot C, Guillet J, May J F: Plast. Rubber Compos. Process. Appl. Vol. 16 (1991), p.61.

[5] Heping Y, Sidong L, Zheng P: J. Therm. Anal. Calorim. Vol. 58 (1999), p.293.

[6] Kochthongrasamee T, Prasassarakich P, Kiatkamjornwong S: J. Polym. Sci. Vol. 101 (2006), p.2587.