Abstract
Natural rubber (NR) has excellent mechanical properties due to its unique molecular chain structure. In previous studies, the signal of the cis- and trans-isoprene units was deduced by 13C-NMR spectrum of the low molecular weight fraction of NR. In this study, through investigating the 1H-NMR spectra of ribbed smoked sheet 1 (RSS-1) and standard Chinese rubber whole fraction (SCR-WF), and Eucommia ulmoides gum (EUG), trans-1,4-polyisoprene (TPI), found that the methyl-proton in the cis- and trans-isoprene units in 1H-NMR spectra of NR showed signals at 1.61 and 1.53 ppm, respectively. Further, the content of trans-structure in the molecular chain of NR of different producing areas was calculated. The results show that the content of trans-structure in the molecular chain structure of RSS-1 and SCR-WF were 1.500 and 1.054%, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
