Facile Synthesis of Amphiphilic Heterografted Copolymers with Crystalline and Amorphous Side Chains
Qing Gao
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Search for more papers by this authorYanshai Wang
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Search for more papers by this authorYingying Ren
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Search for more papers by this authorCorresponding Author
Yang Li
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.Search for more papers by this authorQing Gao
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Search for more papers by this authorYanshai Wang
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Search for more papers by this authorYingying Ren
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Search for more papers by this authorCorresponding Author
Yang Li
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.Search for more papers by this authorAbstract
An amphiphilic polymer brush with PB and PEO side chains is prepared by combined “grafting-onto” and “grafting-from”. The linear and star-shaped heterografted copolymer synthesized is of controlled molecular weight and has a narrow molecular weight distribution (Mw/Mn < 1.2). A DSC study of this heterografted copolymer containing crystalline and amorphous chains shows that it displays “fractionated crystallization” behavior. The study on isothermal crystallization kinetics of the copolymer is carried out in isothermal step crystallization (ISC) experiments, in which two crystallization exothermic peaks at low temperatures are observed. The critical micelle concentration (cmc) of the amphiphilic brush polymer in an aqueous solution is determined by a fluorescence technique. The results show that this amphiphilic brush forms aggregates in the system.
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