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Considering the rapidity and lesser sample amount required, the Fourier Transform Infrared Spectra (FTIR) was often used to quantitatively determine the rubber content of Russian dandelion, guayule, etc. This is because their chemical structure are cis-1,4-polyisoprene (CPI) which has a unique and isolate skeleton stretching vibration peak at 835 cm−1 band, and is convenient for determining the rubber...
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