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Characterization and mechanical property of brominated natural rubber
- Publication Year :
- 2016
-
Abstract
- Brominated natural rubber (BrDPNR) was prepared by bromination of deproteinized natural rubber (DPNR) with N-bromosuccinimide (NBS) in a dichloromethane solution. The BrDPNR was characterized by 1D and 2D-NMR spectroscopy. The bromine atom content of the BrDPNR was dependent on the amount of NBS; that is, higher the amount of NBS, the higher the bromine atom content of the BrDPNR. The glass transition temperature of BrDPNR increased from -68°C to -16°C as amount of bromine atom increased. Cis-trans isomerization of isoprene units during the bromination was found by NMR measurements.<br />Brominated natural rubber (BrDPNR) was prepared by bromination of deproteinized natural rubber (DPNR) with N-bromosuccinimide (NBS) in a dichloromethane solution. The BrDPNR was characterized by 1D and 2D-NMR spectroscopy. The bromine atom content of the BrDPNR was dependent on the amount of NBS; that is, higher the amount of NBS, the higher the bromine atom content of the BrDPNR. The glass transition temperature of BrDPNR increased from -68°C to -16°C as amount of bromine atom increased. Cis-trans isomerization of isoprene units during the bromination was found by NMR measurements.
Details
- Database :
- OAIster
- Notes :
- und
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1309288759
- Document Type :
- Electronic Resource