Photochemical synthesis of perfluoropolyether (PFPE) nanocomposites containing PFPE oligomer stabilized magnetite nanoparticles

Jadhav, Sushilkumar A.; Marchisio, Daniele; Vitale, Alessandra; Bongiovanni, Roberta Maria

doi:10.1007/s00396-014-3338-1

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…If fluorinated matrices have to be used, the alkoxysilane can be selected so that the R group is a fluorinated chain compatible with the matrix and/or contains functional groups, which can coreact in the photopolymerization process. In a recent paper, 210 perfluoropolyether oligomers of moderate molecular weights, functionalized with alkoxysilane groups, are used as modifying agents for magnetite nanoparticles to be dispersed in UV-curable difunctional methacrylic PFPE oligomers. Thin films prepared from the resulting stable suspensions were photopolymerized efficiently, and nanocomposites were obtained.…”

Section: Chemical Reviewsmentioning

confidence: 99%

Fluorinated Oligomers and Polymers in Photopolymerization

2015

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Section: Chemical Reviewsmentioning

confidence: 99%

Fluorinated Oligomers and Polymers in Photopolymerization

2015

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“…For example, the reaction was performed in the presence of a fluorinated alcohol and 2-isocyanatoethyl methacrylate in quantitative yield (Scheme , reaction 1). It enabled the creation of 3D networks by UV light in bulk. ,, −,,, − Other experiments were performed in solution between acrylate and methacrylate monomers. , Supramolecular structures having 2-ureido-4[1 H ]-pyrimidone units with reversible healing have been synthesized thanks to this chemistry . Urea bonds were synthesized in the same way (Scheme , reaction 2). ,, …”

Section: Nucleophilic Reactionsmentioning

confidence: 99%

Diversity of Synthetic Approaches to Functionalized Perfluoropolyalkylether Polymers

et al. 2021

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Perfluoropolyalkylethers (PFPAEs) are a class of fluorinated polymers having −OCF2–, −OCF2CF2–, and −OCF2CF(CF3)– as common chain units. The ether linkages distinguish them from other famous fluorinated polymers such as poly(tetrafluoroethylene). Their higher mobility highlighted by below zero glass transition temperatures permit them to be noncrystalline, which makes them easy to use for many applications. They possess interesting tribological properties, combined with an excellent thermal and chemical stability, make them very useful as lubricants. However, after chemical modifications, they also demonstrated to be very useful in numerous applications as surfactants, electrolytes, high performance coatings, vitrimers, or microfluidic devices, to give a few examples. This Perspective aims to summarize all the chemical modifications reported on these PFPAEs to provide a new insight into their potential utility in emerging fields. Indeed, the end group can modulate the properties of PFPAE-based materials such as lubricity, superhydrophobicity, biofouling, antibacterial activity, amphiphilicity, and the ability to react further with comonomers under photochemical and thermal processes. It can also modulate their intrinsic properties such as viscosity and solubility in common organic solvents. The chemical modifications are sorted in five main parts: the condensation reactions, the nucleophilic reactions, the click chemistry reactions, the radical reactions, and finally reactions going through other mechanisms or requiring a multistep process. They can be employed as such or for further polymerization processes depending on the targeted application. Examples of applications are thoroughly described to demonstrate their current usefulness and to help provide direction for their future use.

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