Anisotropic and Self‐Healing Copolymer with Multiresponsive Capability via Recyclable Alloy‐Mediated RDRP

A novel triple stimuli sensitive block copolymer is prepared by magnetically separable and reusable (up to multiple cycles) Ni–Co alloy nanoparticles mediated reversible deactivation radical polymerization (RDRP) at 25 °C, that responds to changes in temperature, pH, and light. Design of this block...

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Bibliographic Details
Published in:Macromolecular rapid communications. 2021-06, Vol.42 (12), p.e2100096-n/a
Main Authors: Mohammad, Sk Arif, Dolui, Subrata, Kumar, Devendra, Alam, Md. Mehboob, Banerjee, Sanjib
Format: Article
Language:English
Subjects:
Block copolymers
Deactivation
Density functional theory
Healing
Isopropylacrylamide
Lysine
magnetically recyclable catalyst
Methacrylamide
Nanoalloys
Nanoparticles
Nickel base alloys
Polymerization
reversible deactivation radical polymerization
self‐healing
Stimuli
stimuli responsive polymers
Temperature
Umbelliferone
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Summary:A novel triple stimuli sensitive block copolymer is prepared by magnetically separable and reusable (up to multiple cycles) Ni–Co alloy nanoparticles mediated reversible deactivation radical polymerization (RDRP) at 25 °C, that responds to changes in temperature, pH, and light. Design of this block copolymer constitutes a temperature‐sensitive N‐isopropylacrylamide (NIPAM), an acid‐sensitive lysine methacrylamide (LysMAM), and a light responsive umbelliferone (UMB) end group. The stimuli response, in response to one stimulus as well as combinations of stimuli, has been evaluated. Responsiveness to light allows the construction of self‐healing materials. Density functional theory calculations rationalize the underlying mechanism of the polymerization. A novel triple stimuli sensitive block copolymer that responds to changes in temperature, pH, and light is prepared by magnetically separable and reusable (up to multiple cycles) Ni–Co alloy nanoparticles mediated reversible deactivation radical polymerization (RDRP) at 25 °C.
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.202100096