Preparation and characterization of amphiphilic block copolymer of polyacrylonitrile-block-poly(ethylene oxide)

作者：Sui KY^*; Gu LX

来源：Journal of Applied Polymer Science, 2003, 89(7): 1753-1759.

DOI：10.1002/app.12036

The synthesis of polyacrylonitrile-block-poly(ethylene oxide) (PAN-b-PEO) diblock copolymers is conducted by sequential initiation and Ce(IV) redox polymerization using amino-alcohol as the parent compound. In the first step, amino-alcohol potassium with a protected amine group initiates the polymerization of ethylene oxide (EO) to yield poly(ethylene oxide) (PEO) with an amine end group (PEO-NH2), which is used to synthesize a PAN-b-PEO diblock copolymer with Ce(IV) that takes place in the redox initiation system. A PAN-poly(ethylene glycol)-PAN (PAN-PEG-PAN) triblock copolymer is prepared by the same redox system consisting of ceric ions and PEG in an aqueous medium. The structure of the copolymer is characterized in detail by GPC, IR, H-1-NMR, DSC, and X-ray diffraction. The propagation of the PAN chain is dependent on the molecular weight and concentration of the PEO prepolymer. The crystallization of the PAN and PEO block is discussed.

• 出版日期2003-8-15
• 单位青岛大学