1H,1H,2H,2H‐Perfluorodecyl‐Acrylate‐Containing Block Copolymers from ARGET ATRP

Schreiber, Ulrike; Hosemann, Benjamin; Beuermann, Sabine

doi:10.1002/macp.201000307

Cited by 7 publications

(5 citation statements)

References 68 publications

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“…Since hexane does not swell the poly(PFDA) polymer, the reduction in size can be attributed to hexane swelling the PDMS. 23 Cross-linking the PFDA stabilizes the coating by overcoming the weak cohesive forces that are known to exist between linear chains with fluoroalkyl moieties. 24 Analysis of Sample C1 showed no significant diffusion of Rhodamine B into the PDMS after 3 h and no swelling due to hexane absorption.…”

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confidence: 99%

Vapor deposition of cross-linked fluoropolymer barrier coatings onto pre-assembled microfluidic devices

et al. 2011

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confidence: 99%

Vapor deposition of cross-linked fluoropolymer barrier coatings onto pre-assembled microfluidic devices

et al. 2011

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“…After the pressure was rapidly increased to 25 MPa (within 3 min), FT-NIR spectra were started to be in situ collected periodically during the polymerization processes, via which the monomer conversion was determined using the identical method recently reported [22]. When the system continuously polymerized for 8 hours or became cloudy [22,30,31] (where the baseline absorbance exceeded 3.0 [21]), the view cell was cooled and depressurized. After CO 2 in the view cell was slowly released, the raw product was collected and characterized.…”

Section: Free Radical Homopolymerization Of the Monomers In Sccomentioning

confidence: 99%

Insight into the Intermolecular Interaction and Free Radical Polymerizability of Methacrylates in Supercritical Carbon Dioxide

Wang

Zhang

et al. 2020

Polymers

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High pressure in situ Fourier transfer infrared/near infrared technology (HP FTIR/NIR) along with theoretical calculation of density functional theory (DFT) method was employed. The solvation behaviors and the free radical homopolymerization of methyl methacrylate (MMA), methacrylate acid (MAA), trifluoromethyl methacrylate (MTFMA) and trifluoromethyl methacrylate acid (TFMAA) in scCO2 were systematically investigated. Interestingly, the previously proposed mechanism of intermolecular-interaction dynamically-induced solvation effect (IDISE) of monomer in scCO2 is expected to be well verified/corroborated in view that the predicted solubility order of the monomers in scCO2 via DFT calculation is ideally consistent with that observed via HP FTIR/NIR. It is shown that MMA and MAA can be easily polymerized, while the free radical polymerizability of MTFMA is considerably poor and TFMAA cannot be polymerized via the free radical initiators. The α trifluoromethyl group (–CF3) may effectively enhance the intermolecular hydrogen bonding and restrain the diffusion of the monomer in scCO2. More importantly, the strong electron-withdrawing inductive effect of –CF3 to C=C may distinctly decrease the atomic charge of the carbon atom in the methylene (=CH2). These two factors are believed to be predominantly responsible for the significant decline of the free radical polymerizability of MTFMA and the other alkyl 2-trifluoromethacrylates in scCO2.

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“…The products were then employed as macroinitiators for MMA polymerization. Alternatively, PMMA and poly( t ‐butyl methacrylate) macroinitiators were used in ARGET (activators regenerated by electron transfer) ATRP to polymerize 1H,1H,2H,2H‐perfluorodecyl acrylate BCP with −D of 1.2–2.3 in supercritical CO 2 as reported by Schreiber et al We followed that method by using 1,3‐bis(trifluoromethyl)benzene instead of CO 2 and standard ATRP conditions.…”

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confidence: 99%

Semifluorinated PMMA Block Copolymers: Synthesis, Nanostructure, and Thin Film Properties

Pospiech

Jehnichen

Eckstein

et al. 2017

Macro Chemistry & Physics

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Diblock copolymers (BCP) with poly(methyl methacrylate) and poly(1H,1H,2H,2H-perfluorodecyl methacrylate) (PsfMA) blocks prepared by anionic polymerization in tetrahydrofuran at −78 °C and atom transfer radical polymerization (ATRP) at 60 °C, respectively, with stepwise varied composition over a wide range in the phase diagram are compared with respect to synthesis limits, phase separation behavior in bulk, and properties of thin films. Both methods yield BCPs with low dispersity (1.1-1.2) at molar masses below 100 kg mol −1 . Higher semifluorinated contents can be achieved by ATRP in 1,3-bis(trifluoromethyl)benzene which ensured solubility of PsfMA. BCPs obtained by anionic polymerization show a more distinct phase separation, that is, more regular nanostructures. Additionally, self-organization of the semifluorinated side chains occurs generating smectic layers which alters in turn the BCP morphology especially in thin films as compared to non-semifluorinated BCP. All BCPs show amphiphilic behavior and form micelles in organic solvents which can be used to deposit nanoparticles. periodic structures is the low dispersity − D of both blocks in the BCP which can mostly be achieved by employing controlled polymerization conditions. Although more and more methods of controlled polymerizations appear, such as light-controlled polymerization of methacrylates to BCP in a one-pot procedure, [7] visible-light polymerization from hyperbranched poly(methyl methacrylate) macroinitiators catalyzed by Mn 2 (CO) 10 , [8] combination of polymerization and click chemistry, and many others, and taking the variety of BCP syntheses results reported into account, standard techniques for BCP synthesis as anionic polymerization and atom transfer radical polymerization (ATRP) still appear to be the most successful with regards to achieving low dispersity and high control over the structure and molar mass.In this study, we want to compare diblock copolymers with a poly(methyl methacrylate) (PMMA) and a

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1H,1H,2H,2H‐Perfluorodecyl‐Acrylate‐Containing Block Copolymers from ARGET ATRP

Cited by 7 publications

References 68 publications

Vapor deposition of cross-linked fluoropolymer barrier coatings onto pre-assembled microfluidic devices

Vapor deposition of cross-linked fluoropolymer barrier coatings onto pre-assembled microfluidic devices

Insight into the Intermolecular Interaction and Free Radical Polymerizability of Methacrylates in Supercritical Carbon Dioxide

Semifluorinated PMMA Block Copolymers: Synthesis, Nanostructure, and Thin Film Properties

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