S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Synthesis of Dilithium α,ω-Disulfonated Polystyrene by Anionic Polymerization
- Kim, Jungahn; Lee, MiKyung; Ryu, Chang-Yeol; Lee, Jonghwi; Hwang, Seung Sang; Park, Tae Suk; Kim, Kwang Ung; Yoon, Hye Sung; Ahn, Byeong In; Char, Kookheon; Ryu, Joo Han; Quirk, Roderic P.
- Issue Date
- Polym. J., 26, 1111 (1994)
- 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
- 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%).
- 0032-3896 (print)