Rapid Analysis of the Triad Sequence Distributions of Ethylene-Propylene Rubber by IR-13C NMR-PLS

Xia Zhao; Guang Tong Xu

doi:10.4028/www.scientific.net/AMM.152-154.444

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Rapid Analysis of the Triad Sequence Distributions of Ethylene-Propylene Rubber by IR-¹³C NMR-PLS
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 152-154Rapid Analysis of the Triad Sequence Distributions...

Rapid Analysis of the Triad Sequence Distributions of Ethylene-Propylene Rubber by IR-¹³C NMR-PLS

Abstract:

The triad sequence distributions of -EEE-、-EEP-、-EPE-、-PEP-、-PPE- and -PPP- of Ethylene-Propylene Rubber (EPR) has been determined by infrared spectroscopy (IR) combined with 13C NMR and partial least squares (PLS) chemo metric algorithm. The triad sequence distributions obtained by 13C NMR was used as reference date. PLS regression models of the sequence distributions of EPR have been developed by MIR range. The wave number range of IR was 1300~600cm-1 and the spectra were pretreated through smoothing and second derivation. The results showed the sequence distributions predicted by models were consisted with the data from 13C NMR. The triad sequence distributions of EPR could be fastly analyzed by IR models.