Citation: . CONTROLLED SYNTHESIS OF AMPHIPHILIC BLOCK POLYMERS HAVING GLUCOSE RESIDUES AND THEIR STRUCTURE FORMATION[J]. Chinese Journal of Polymer Science, ;1999, 17(1): 21-26. shu

CONTROLLED SYNTHESIS OF AMPHIPHILIC BLOCK POLYMERS HAVING GLUCOSE RESIDUES AND THEIR STRUCTURE FORMATION

Received Date: 3 October 1997

Vinyl ether (VE)-based amphiphilic block copolymers with D-glucose residues as hydrophilicpendants were synthesized by CH3 CH(OiBu)Cl/ZnI2-initiated sequential living cationic copolymerization of 3-O-(vinyloxy)ethyl-1, 2:5, 6-di-O-isopropylidene-D-glucofuranose (IGVE) and isobutyl VE (IBVE ) andsubsequent deprotection. The precursor block copolymers had a narrow molecular weight distribution(Mw/Mn～1.1) and a controlled segmental composition. The solubility characteristics of the amphiphilic copolymer depended strongly on composition.Thier solvent-cast thin films were examined,under a transmission electron microscope,and could be seen to exhibit various microphase-separated surface morphologies such as spheres,cylinders,and lamellae,depending on composition.The amphiphilic copolymers with the appropriate segmental composition were found to form a stable monolayer at the air-water interface,which was successfully transferred onto a substrate by the Langmuir-Blodgett(LB) technique.The layered structure of the built-up LB films was controlled by blending the homopolymer.
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