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Type: Conference paper
Title: Study on Synthesis and Characterization of Polystyrene-b-poly (Glycidyl Methacrylate) diblock copolymers
Author: Zhang, J.
Zhang, Y.
Zheng, A.
Tian, Y.
Wang, X.
Wang, K.
Newcombe, B.
Weng, W.
Wang, H.
Wang, M.
Wu, F.
Ngothai, Y.
Citation: Proceeding of the Chemeca 2008 Conference: Towards a Sustainable Australasia, 28 September–1 October 2008: pp.856-864
Publisher: Engineers Australia
Publisher Place: CD
Issue Date: 2008
Conference Name: CHEMECA (36th : 2008 : Newcastle, Australia)
Abstract: The living poly(styryl)lithium was synthesized by anionic polymerization with the protection of argon under normal pressure, where styrene, toluene, THF, n-butyllithium and small amount of LiCl were used as monomer, solvent, polar reagent, initiator and additive, respectively. Polystyrene-b-poly(Glycidyl Methacrylate) diblock copolymers (PS-b-PGMA) with well-defined structure and narrow molecular weight distribution (Mw: Mn <1.1)were prepared by the copolymerization reaction of poly(styryl)lithium with glycidyl methacrylate (GMA) at proper temperature. The copolymers were characterized using GPC, 1H-NMR, 13C-NMR, TLC and Hydrochloric acid-Dioxane Argentimetric method. The effects of additives, copolymerization temperature on the content of side epoxy group were also studied. The results showed that 1, 1-Diphenylethylene (DPE) end-capped poly(styryl) carbanion could effectively initiate GMA in toluene in the presence of LiCl and a small amount of THF to prepare PS-b-PGMA with well-controlled molecular weight and narrow molecular weight distribution. No chain transfer reaction was spotted in toluene. It was also found that the optimal reaction temperature was -65°C within the set range of molecular weight in the experiments herein.
RMID: 0020085032
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Appears in Collections:Chemical Engineering publications

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