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Facile Synthesis and Self-assembly Behavior of Novel Multihetero-arms Hyperbranched Polyglycerol

Yin Hui

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Abstract

A novel multihetero-arms hyperbranched polyglycerol(HPG-h-arm) was synthesized through three facile steps: synthesis of HPG by anionic ring-opening polymerization of glycidol,grafting hydrophobic palmi-tic acid(PA) chains and reactive Br by N,N′-dicyclohexylcarbodiimide(DCC) coupling reaction,and grafting hydrophilic poly[2-(dimethyl amino)ethyl methacrylate](PDMAEMA) chains by atom transfer radical polymerization(ATRP).The structure of the HPG-h-arm was characterized by GPC,FTIR and 1H NMR.The self-assembled behavior of the HPG-h-arm in different solvents were detected by DLS,and the morphology of the assembly was examined by TEM and AFM.The results show that the HPG-h-arm could form spherical micelles with different sizes in different solvents.

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What this paper is about

A novel multihetero-arms hyperbranched polyglycerol(HPG-h-arm) was synthesized through three facile steps: synthesis of HPG by anionic ring-opening polymerization of glycidol,grafting hydrophobic palmi-tic acid(PA) chains and reactive Br by N,N′-dicyclohexylcarbodiimide(DCC) coupling reaction,and grafting hydrophilic poly[2-(dimethyl amino)ethyl methacrylate](PDMAEMA) chains by atom transfer radical polymerization(ATRP).The structure of the HPG-h-arm was characterized by GPC,FTIR and 1H NMR.The self-assembled behavior of the HPG-h-arm in different solvents were detected by DLS,and the morphology of the assembly was examined by TEM and AFM.The results show that the HPG-h-arm could form spherical micelles with different sizes in different solvents.

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Available abstract

A novel multihetero-arms hyperbranched polyglycerol(HPG-h-arm) was synthesized through three facile steps: synthesis of HPG by anionic ring-opening polymerization of glycidol,grafting hydrophobic palmi-tic acid(PA) chains and reactive Br by N,N′-dicyclohexylcarbodiimide(DCC) coupling reaction,and grafting hydrophilic poly[2-(dimethyl amino)ethyl methacrylate](PDMAEMA) chains by atom transfer radical polymerization(ATRP).The structure of the HPG-h-arm was characterized by GPC,FTIR and 1H NMR.The self-assembled behavior of the HPG-h-arm in different solvents were detected by DLS,and the morphology of the assembly was examined by TEM and AFM.The results show that the HPG-h-arm could form spherical micelles with different sizes in different solvents.

Key concepts: Glycidol, Atom-transfer radical-polymerization, Polymer chemistry, Grafting, Polymerization, Self-assembly, Methacrylate, Micelle

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