NDLI: Effect of copolymer composition of RAFT/MADIX-derived N-vinylcaprolactam/N-vinylpyrrolidone statistical copolymers on their thermoresponsive behavior and hydrogel properties

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Effect of copolymer composition of RAFT/MADIX-derived N-vinylcaprolactam/N-vinylpyrrolidone statistical copolymers on their thermoresponsive behavior and hydrogel properties

Content Provider	Royal Society of Chemistry (RSC)
Author	Marty, Jean-Daniel Delmas, Céline Destarac, Mathias Zhao, Xuange Coutelier, Olivier Nguyen, Hanh Hong
Copyright Year	2015
Abstract	Thermoresponsive statistical copolymers of N-vinylcaprolactam and N-vinylpyrrolidone of controlled average molar masses and composition were synthesized by RAFT/MADIX polymerization. The cloud point temperature was finely tuned in the range of temperature 36–70 °C. DSC measurements combined with statistical calculations suggest that the whole polymer chain is involved in the hydration/dehydration process rather than short polymer sequences. At high concentration, these polymers enable the formation of thermoresponsive hydrogels. Cryo-SEM analysis of these solutions showed the presence of globular substructures, with a looser 3-D network at higher VP content. This decrease of density of entanglements in the gel network could explain the decrease of mechanical properties and faster rehydration kinetics of the thermogelling polymer.
Starting Page	5233
Ending Page	5243
Page Count	11
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	6
Issue Number	29
Journal	Polymer Chemistry
DOI	10.1039/c5py00606f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Cloud point N-Vinylpyrrolidone DSC Molar mass Polymerization Polymer Dehydration reaction
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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