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Genest A, Portinha D, Pouget E, Lamnawar K, Ganachaud F, Fleury E. Zwitterionic Silicone Materials Derived from Aza-Michael Reaction of Amino-Functional PDMS with Acrylic Acid. Macromol Rapid Commun 2020; 42:e2000372. [PMID: 33196116 DOI: 10.1002/marc.202000372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/22/2020] [Indexed: 11/11/2022]
Abstract
Supramolecular zwitterionic silicones are synthesized by aza-Michael reaction between acrylic acid and amine-functional polydimethylsiloxanes. The in-depth characterization of this chemistry, applied for the first time to silicones, is investigated first with model alkylamines (hexylamine, 2-ethylhexylamine and N-propylethylenediamine), a model oligosiloxane (3-aminopropylmethyl bis(trimethylsiloxy)silane), and finally various amino-polysiloxanes. It is shown that after a first acid-base reaction resulting in ionic pairing, aza-Michael addition proceeds smoothly in mild conditions (50 °C, 1-week reaction). Both monoadducts and di-adducts, together with residual amine, are observed by NMR. The supramolecular assembly of the thus-created zwitterionic moieties is highlighted by a concomitant increase in viscosity and phase separation, as observed by transmission electron microscopy, bringing an additional glass transition at -40 °C assigned to highly polar ionic clusters. Below the stoichiometry in acrylic acid, all zwitterionic silicones follow the same classical behavior of nonentangled polymers according to the Rouse model, whereas upon introducing an excess of acrylic acid to amino groups, an enhancement of the elasticity is observed. Finally, silicone elastomers with solid-like behavior and elastomeric mechanical properties are obtained using a high molar mass polymer bearing bifunctional N-(2-aminoethyl)-3-aminopropyl units that favor a high degree of physical crosslinking.
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Affiliation(s)
- Aymeric Genest
- Université de Lyon, CNRS, UMR 5223, INSA-Lyon, IMP@INSA, Villeurbanne, F-69621, France.,Elkem Silicones France, 55 Rue des Frères Perret, BP 22, Saint-Fons Cedex, F-69191, France
| | - Daniel Portinha
- Université de Lyon, CNRS, UMR 5223, INSA-Lyon, IMP@INSA, Villeurbanne, F-69621, France
| | - Emmanuel Pouget
- Elkem Silicones France, 55 Rue des Frères Perret, BP 22, Saint-Fons Cedex, F-69191, France
| | - Khalid Lamnawar
- Université de Lyon, CNRS, UMR 5223, INSA-Lyon, IMP@INSA, Villeurbanne, F-69621, France
| | - Francois Ganachaud
- Université de Lyon, CNRS, UMR 5223, INSA-Lyon, IMP@INSA, Villeurbanne, F-69621, France
| | - Etienne Fleury
- Université de Lyon, CNRS, UMR 5223, INSA-Lyon, IMP@INSA, Villeurbanne, F-69621, France
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Pestov A, Privar Y, Mekhaev A, Fedorets A, Ezhikova M, Kodess M, Bratskaya SY. A new approach to the green synthesis of imidazole-containing polymer ligands and cryogels. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wan Ibrahim WA, Abd Ali LI, Sulaiman A, Sanagi MM, Aboul-Enein HY. Application of Solid-Phase Extraction for Trace Elements in Environmental and Biological Samples: A Review. Crit Rev Anal Chem 2014; 44:233-54. [DOI: 10.1080/10408347.2013.855607] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Skorik YA, Pestov AV, Kodess MI, Yatluk YG. Carboxyalkylation of chitosan in the gel state. Carbohydr Polym 2012; 90:1176-81. [DOI: 10.1016/j.carbpol.2012.06.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 06/21/2012] [Accepted: 06/23/2012] [Indexed: 10/28/2022]
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Ferruti P, Ranucci E, Manfredi A, Mauro N, Ferrari E, Bruni R, Colombo F, Mussini P, Rossi M. L
-lysine and EDTA polymer mimics as resins for the quantitative and reversible removal of heavy metal ion water pollutants. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26330] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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