首页|A greener route for smart PNIPAm microgel synthesis using a bio-based synthesis-solvent

A greener route for smart PNIPAm microgel synthesis using a bio-based synthesis-solvent

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  • NSTL
  • Elsevier
A novel route for poly(N-isopropylacrylamide) (PNIPAm) microgel synthesis using the bio-based solvent 2-Methyltetrahydrofuran (2-MeTHF) is described. Functional and chemical characterization of the PNIPAm microgels synthesized in 2-MeTHF indicates that they are equivalent to microgels synthesized using conventional organic solvents. The volume phase transition temperature was 31.7 degrees C, the glass transition temperature was observed at 157 degrees C, and the swelling ratio was 3.7 (dry mass basis). XRD and FT-IR spectroscopic analysis confirmed the successful synthesis of crosslinked PNIPAm microgels. The role of 2-MeTHF as a chain transfer agent in the polymerization can be explained by hydrogen abstraction from the C2 atom position of 2-MeTHF during the chain transfer step of free radical polymerization. An eco-sustainability analysis of the synthesis of PNIPAm microgels in bio-based 2-MeTHF indicates that this route has a much lower carbon footprint than synthesis in conventional solvents, thus providing a more sustainable route for the synthesis of smart microgels for environmental and biomedical applications.

Thermoresponsive polymerGreen solventPNIPAm microgelSustainable synthesisChain transfer agentFree radical polymerizationFREE-RADICAL POLYMERIZATIONHYDROGEN ABSTRACTION REACTIONSRATE CONSTANTSKINETICS2-METHYLTETRAHYDROFURANPOLYMERSTEMPERATURELIMONENE

Rana, Md Mohosin、Natale, Giovanniantonio、Siegler, Hector De la Hoz

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Univ Calgary

2022

10.1016/j.eurpolymj.2022.111311

European Polymer Journal

European Polymer Journal

EISCI
ISSN：0014-3057
年,卷(期)：2022.174
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