Study on Synthesis and Characterization of Polystyrene-b-poly (Glycidyl Methacrylate) diblock copolymers
Date
2008
Authors
Zhang, J.
Zhang, Y.
Zheng, A.
Tian, Y.
Wang, X.
Wang, K.
Newcombe, B.
Weng, W.
Wang, H.
Wang, M.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceeding of the Chemeca 2008 Conference: Towards a Sustainable Australasia, 28 September–1 October 2008: pp.856-864
Statement of Responsibility
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.