The Natural Rubber Latex Development as Medical Device Products: the Effect Study of H2-added Reaction on the Morphology of Natural Rubber Latex Particles in the Colloid State
Keywords:
H2-added reaction, Morphology, Cis-trans isomerization, Natural rubber latex particles, Raman spectroscopyAbstract
A study of H2-added reaction or hydrogenation of natural rubber helps to improve the original natural rubber properties such as thermal stability, ozone resistance, radiation-induced degradation, and chemical resistance due to the unsaturated (C=C) bonds decreased and it can be applied to develop as medical device products. This work focused on the effect study of H2-added reaction on the morphology of natural rubber latex particles in the colloid state. The morphology of natural rubber latex particles was carried out on transmission electron microscopy and the chemical structure was confirmed by using 1H-NMR, Raman, and FT-IR spectra. In this study, it was found that natural rubber latex particles without H2-added reaction showed that the surface and shape of natural rubber latex particles were similar to original natural rubber latex particles. In contrast, the H2-added reaction on the surface of natural rubber latex particles was presented that natural rubber latex particles were changed into a square or edge shape. However, the particle sizes of natural rubber latex and H2-added natural rubber latex were similar by using a particle size analyzer. Thus, the H2-added reaction was affected on the morphology of natural rubber latex particles and it indicated the H2-added and Cis-trans isomerization takes place. Moreover, natural rubber latex via H2-added reaction can be used and applied to develop medical device products with latex in future work.
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