Knowledge Management of Net Requirements in Using Natural Rubber in Thai Rubber Industry to Support the Increase in Using Natural Rubber within Thailand

摘要

A blend of natural rubber (NR) and styrene butadiene rubber (SBR) was tested against conventional rubber products sold in department stores and markets, using nuclear magnetic resonance (NMR) spectroscopy to measure the amount of natural or synthetic rubber in the product. ~1H-NMR spectroscopy was employed for the rubber blend and ~(13)C-NMR spectroscopy for conventional products. The chemical shift of all the samples from the structure of natural rubber (cis-1,4 polyisoprene) was observed.