Syntheses and morphologies of fluorinated diblock copolymer prepared via RAFT polymerization

Koiry, Bishnu P.; Ponnupandian, Siva; Choudhury, Soumyadip; Singha, Nikhil K.

doi:10.1016/j.jfluchem.2016.06.021

Cited by 19 publications

(10 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, spectra recorded for samples synthesized by RAFT, exhibit typical signals related to the aromatic portion of the RAFT agent used (2CPBz). These signals and their chemical displacements have been previously reported [33] and would be indicative of the retention of the RAFT agent in the terminals of some polymer chains [27,28]. Similarly, Figure S1 reveals the apparition of signals in samples polymerized by RAFT, which are absent for samples synthesized through conventional radical polymerization.…”

Section: Structural Characterizationsupporting

confidence: 77%

Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities

et al. 2021

View full text Add to dashboard Cite

In this work, polymethacrylates containing sulfonyl and nitrile functional groups were successfully prepared by conventional radical polymerization and reversible addition-fragmentation chain-transfer polymerization (RAFT). The thermal and dielectric properties were evaluated, for the first time, considering differences in their molecular weights and dispersity values. Variations of the aforementioned properties do not seem to substantially affect the polarized state of these materials, defined in terms of the parameters ε’r, ε”r and tan (δ). However, the earlier appearance of dissipative phenomena on the temperature scale for materials with lower molecular weights or broader molecular weight distributions, narrows the range of working temperatures in which they exhibit high dielectric constants along with low loss factors. Notwithstanding the above, as all polymers showed, at room temperature, ε’r values above 9 and loss factors below 0.02, presenting higher dielectric performance when compared to conventional polymer materials, they could be considered as good candidates for energy storage applications.

show abstract

Section: Structural Characterizationsupporting

confidence: 77%

Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities

et al. 2021

View full text Add to dashboard Cite

show abstract

“…32 A number of reports have detailed the synthesis of semifluorinated methacrylates via living anionic polymerization, 32−35 a technique that is both synthetically difficult and limited in monomer scope/sequence. Operationally simpler and lessrestrictive alternatives have also been investigated, 30 primarily RAFT, 36,37 nitroxide-mediated polymerization, 38 and ATRP. 39,40 Classical ATRP procedures for the preparation of semi-fluorinated polymers (i.e., non-light-mediated mechanisms) include pioneering work by DeSimone and co-workers, who polymerized semi-fluorinated macromolecules using fluorinated ligands in supercritical CO 2 as the solvent.…”

Section: ■ Introductionmentioning

confidence: 99%

Light-Mediated Atom Transfer Radical Polymerization of Semi-Fluorinated (Meth)acrylates: Facile Access to Functional Materials

et al. 2017

View full text Add to dashboard Cite

A highly efficient photomediated atom transfer radical polymerization protocol is reported for semi-fluorinated acrylates and methacrylates. Use of the commercially available solvent, 2-trifluoromethyl-2-propanol, optimally balances monomer, polymer, and catalyst solubility while eliminating transesterification as a detrimental side reaction. In the presence of UV irradiation and ppm concentrations of copper(II) bromide and Me-TREN (TREN = tris(2-aminoethyl amine)), semi-fluorinated monomers with side chains containing between three and 21 fluorine atoms readily polymerize under controlled conditions. The resulting polymers exhibit narrow molar mass distributions (Đ ≈ 1.1) and high end group fidelity, even at conversions greater than 95%. This level of control permits the in situ generation of chain-end functional homopolymers and diblock copolymers, providing facile access to semi-fluorinated macromolecules using a single methodology with unprecedented monomer scope. The results disclosed herein should create opportunities across a variety of fields that exploit fluorine-containing polymers for tailored bulk, interfacial, and solution properties.

show abstract

“…The same authors also reported the synthesis and self-assembly of PMMA-b-PHepFBA diblock copolymers. 45 These diblock copolymers were self-assembled via method 2 in Methyl Ethyl Ketone: Tetrahydrofuran (MEK:THF) binary mixtures. The self-assembled morphologies, depending on the THF:MEK volume ratios, were claimed to be micelles, worms and nanotubes, although the evidence provided may not be sufficiently convincing.…”

Section: 233444-heptafluorobutyl (Meth)acrylate (Hepfb(m)a)mentioning

confidence: 99%

Solution self-assembly of fluorinated polymers, an overview

et al. 2021

View full text Add to dashboard Cite

show abstract

Syntheses and morphologies of fluorinated diblock copolymer prepared via RAFT polymerization

Cited by 19 publications

References 52 publications

Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities

Molecular Weight Enables Fine-Tuning the Thermal and Dielectric Properties of Polymethacrylates Bearing Sulfonyl and Nitrile Groups as Dipolar Entities

Light-Mediated Atom Transfer Radical Polymerization of Semi-Fluorinated (Meth)acrylates: Facile Access to Functional Materials

Solution self-assembly of fluorinated polymers, an overview

Contact Info

Product

Resources

About