Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 31, Issue 24, Pages 2155-2159Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201000392
Keywords
block copolymers; graft copolymers; macromonomers; ring-opening polymerization; self-assembly
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Funding
- National Natural Science Foundation of China [20774067, 20974082]
- National Basic Research Program of China [2005CB623903, 2009CB930300]
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Well-defined amphiphilic block-graft copolymers PCL-b-[DTC-co-(MTC-mPEG)] with polyethylene glycol methyl ether pendant chains were designed and synthesized. First, monohydroxyl-terminated macroinitiators PCL-OH were prepared. Then, ring-opening copolymerization of 2,2-dimethyltrimethylene carbonate (DTC) and cyclic carbonate-terminated PEG (MTC-mPEG) macromonomer was carried out in the presence of the macroinitiator in bulk to give the target copolymers. All the polymers were characterized by H-1 NMR and gel permeation chromatography (GPC). The polymers have unimodal molecular weight distributions and moderate polydispersity indexes. The amphiphilic block-graft copolymers self-assemble in water forming stable micelle solutions with a narrow size distribution.
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