NDLI: Preparation of water-soluble hyperbranched polymers with tunable thermosensitivity using chain-growth CuAAC copolymerization

Content Provider	Royal Society of Chemistry (RSC)
Author	Shi, Yi Gan, Weiping Gao, Haifeng Cao, Xiaosong Zou, Lei
Copyright Year	2016
Abstract	Thermoresponsive hyperbranched polymers with a dangling oligo(ethylene oxide) (EOx, x as the averaged number of EO units) chain on every monomer unit were constructed using the chain-growth copper-catalyzed azide–alkyne cycloaddition (CuAAC) copolymerization of two AB2-F monomers with EO3 and EO7.5 as F groups. The one-pot polymerization produced hyperbranched polymers with a linearly increased molecular weight versus conversion and narrow molecular weight distribution (Mw/Mn ∼ 1.1). The composition of hyperbranched copolymers was governed by the monomer feed ratio and directly determined the cloud temperature of the polymers in water. The cloud temperature could be further tuned via periphery modification of the hyperbranched polymers using alkynyl-terminated oligomeric EO3 chains, in the range of 17 to 60 °C within our investigation.
Starting Page	7500
Ending Page	7505
Page Count	6
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	7
Issue Number	48
Journal	Polymer Chemistry
DOI	10.1039/c6py01712f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Cycloaddition Cloud Polymerization Ethylene oxide Molar mass distribution Oligomer Monomer
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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Preparation of water-soluble hyperbranched polymers with tunable thermosensitivity using chain-growth CuAAC copolymerization