Journal
RSC ADVANCES
Volume 10, Issue 18, Pages 10932-10938Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra10069e
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Funding
- National Natural Science Foundation of China [51873026]
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Using a simple one-pot method, the reduction of liquid terminated-carboxyl fluoroelastomers (LTCFs) by sodium borohydride and samarium chloride (NaBH4/SmCl3) was successfully realized and liquid terminated-hydroxyl fluoroelastomers (LTHFs) were obtained. The structure and functional group content of LTCFs and LTHFs were analyzed by FTIR, H-1-NMR, F-19-NMR and chemical titration. The results showed that -C & xe001;C- and carboxyl groups of LTCFs were reduced efficiently, the reduction rate reached 92% under optimum reaction conditions. Compared with other frequently-used metal chlorides, SmCl3 with a high coordination number could increase the reduction activity of NaBH4 more effectively and the reduction mechanism was explored.
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