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Synthesis of Dilithium α,ω-Disulfonated Polystyrene by Anionic Polymerization
Cited 4 time in
Web of Science
Cited 4 time in Scopus
- Authors
- Issue Date
- 1994
- Citation
- Polym. J., 26, 1111 (1994)
- Keywords
- α,ω-Dilithiopolystyrene ; Difunctional Initiator ; α,ω-Bis(1-lithio-1,1-diphenylethyl)polystyrene ; Sulfoalkylation ; 1,3-Propanesultone ; Dilithium α,ω-Disulfonated Polystyrene ; Size Exclusion Chromatography
- Abstract
- The chain-end sulfonation of α,ω-dilithiopolystyrene prepared by lithium naphthalenide as a difunctional initiator using 1,3-propanesultone was studied by the characterization methodologies such as acid/base titration, colorimetric method using methylene blue, two-phase titration with Hyamine 1622, size exclusion chromatographic analysis infrared, and 1H NMR spectroscopic analysis. The reactivity modification of α,ω-dilithiopolystyrene through the end-capping with 1,1-diphenylethylene prior to the sulfoalkylation in benzene-tetrahydrofuran (THF) (10 : 1, v/v) at 25°C with excess 1,3-propanesultone is suggested as a useful method for the preparation of the corresponding dilithium α,ω-disulfonated polystyrene in relatively high yield based on the results from the acid/base titration (>85%).
- ISSN
- 0032-3896 (print)
1349-0540 (online)
- Language
- English
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