Crosslinked poly(methyl methacrylate) with perfluorocyclobutyl aryl ether moiety as crosslinking unit: thermally stable polymer with high glass transition temperature

Li, Yang; Guo, Hao

doi:10.1039/c9ra10166g

Cited by 28 publications

(15 citation statements)

References 42 publications

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“…Moreover, the sharp peak appeared at 2870 cm À1 in the spectrum of PVDF-g-PMMA is related to the methoxy group ( OCH 3 ) in PMMA. 53,54 All these findings confirm successful grafting of PMMA from PVDF chains. Figure 1 exhibits the 1 H NMR spectra of the PVDF homopolymer and PVDF-g-PMMA copolymer.…”

Section: Characterization Of the Pvdf-g-pmma Copolymer Structurementioning

confidence: 61%

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO₂ nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Mahdavi

Zeinalipour

Heidari

2022

J of Applied Polymer Sci

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In this work, the ATRP polymerization technique was first utilized for controlled grafting of methyl methacrylate monomers from a Poly(vinylidene fluoride) (PVDF) backbone with a predefined molecular weight and narrow molecular weight distribution. After the successful formation of the copolymer, different amounts of the prepared PMMA‐g‐PVDF copolymer along with TiO2 nanoparticles were then employed for the fabrication of PVDF mixed matrix membranes (MMMs). The separation performance of the fabricated membranes was evaluated in rejection of different dyes including Methyl Green (MG), Rhodamine B (RDB), Crystal Violet (CV), and Methylene Blue (MB) from aqueous solutions. It was observed that a high rejection ability (99.6%, 99.1%, 98.9%, and 96.1% for MG, RDB, CV, and MB), a good permeate Flux of 8.35 L/m2 h along with an outstanding antifouling performance were provided by the membrane with 0.4% PVDF‐PMMA and 0.2%TiO2.

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Section: Characterization Of the Pvdf-g-pmma Copolymer Structurementioning

confidence: 61%

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO₂ nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Mahdavi

Zeinalipour

Heidari

2022

J of Applied Polymer Sci

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“…In TGA, UiO-66 exhibited a one-step weight loss around 600 °C according to the combustion of the organic linker. PMB 12 exhibited a three-step weight loss at 150, 300, and 400 °C, which coincided with the incineration of methacrylate, backbone structure of PMMA, and backbone of BPEI, respectively. , On the basis of char amounts at 800 °C, the UiO-66 contents in PMB 12 _40, PMB 12 _30, PMB 12 _20, and PMB 12 _10 were the same as the introduced amounts (40.4, 28.5, 20.6, and 10.2 wt % respectively). Further analysis with FT-IR was performed to validate the chemical structure of PMB 12 and UiO-66 (Figure B).…”

Section: Resultsmentioning

confidence: 81%

Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Seo

Choi

Lee

et al. 2022

ACS Appl. Mater. Interfaces

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Defense against chemical warfare agents (CWAs) is regarded as a top priority for the protection of humanity, but it still depends on physical protection with severe limitations such as residual toxicity and post-treatment requirement. In this study, a strategically designed functional polymeric substrate was composited with a metal−organic framework catalyst to remove toxicity immediately. A series of PMMA-BPEI copolymers exhibited high processability as a coating and accelerated the catalytic activity of Zr(IV)-based metal−organic framework catalysts (UiO-66). Among them, PMB12_40 composite coating on a cotton fabric, containing a PMMA-BPEI copolymer (PMMA/BPEI = 1/2) and 40% of UiO-66 catalyst, can efficiently decompose nerve agent simulants (methyl-paraoxon) under both liquid phase (t 1/2 = 0.14 h) and humidified (t 1/2 = 4.8 h) conditions. Moreover, a real agent, GD, was decomposed 100% by PMB12_40 in 4 h at 25 °C and 65% relative humidity. On the basis of superior catalytic activity, the PMB composites are anticipated to be a potential material for active chemical protection coating.

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“…These results can be ascribed to the competitive effects of the crosslinking-induced interchain forces and the steric hindrance, which depends on the type of diamine modifier. Both DA0-MAT and DA1-MAT exhibited a significant increase in Tg compared to that of pristine Matrimid because the crosslinking may constrict the chain rearrangement [ 55 , 56 ]. DA0-MAT has the highest T g , potentially resulting from its highly efficient chain packing, as confirmed by DA0-MAT having the lowest d-spacing.…”

Section: Resultsmentioning

confidence: 99%

Surface Modification of Matrimid® 5218 Polyimide Membrane with Fluorine-Containing Diamines for Efficient Gas Separation

Lee

Park

et al. 2022

Membranes

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Polyimide membranes have been widely investigated in gas separation applications due to their high separation abilities, excellent processability, relatively low cost, and stabilities. Unfortunately, it is extremely challenging to simultaneously achieve both improved gas permeability and selectivity due to the trade-off relationship in common polymer membranes. Diamine modification is a simple strategy to tune the separation performance of polyimide membranes, but an excessive loss in permeability is also generally observed. In the present work, we reported the effects of diamine type (i.e., non-fluorinated and fluorinated) on the physicochemical properties and the corresponding separation performance of a modified membrane using a commercial Matrimid® 5218 polyimide. Detailed spectroscopic, thermal, and surface analyses reveal that the bulky fluorine groups are responsible for the balanced chain packing modes in the resulting Matrimid membranes compared to the non-fluorinated diamines. Consequently, the modified Matrimid membranes using fluorinated diamines exhibit both higher gas permeability and selectivity than those of pristine Matrimid, making them especially effective for improving the separation performance towards H2/CH4 and CO2/CH4 pairs. The results indicate that the use of fluorinated modifiers may offer new opportunities to tune the gas transport properties of polyimide membranes.

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Crosslinked poly(methyl methacrylate) with perfluorocyclobutyl aryl ether moiety as crosslinking unit: thermally stable polymer with high glass transition temperature

Abstract: PMMA-based copolymer containing aryl TFVE moieties prepared by copolymerization of MMA and TFVOPMA monomer containing aryl TFVE group and thermal cross-linked by [2π + 2π] cycloaddition reaction of aryl TFVE moieties.

Cited by 28 publications

References 42 publications

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO₂ nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO₂ nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Surface Modification of Matrimid® 5218 Polyimide Membrane with Fluorine-Containing Diamines for Efficient Gas Separation

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Crosslinked poly(methyl methacrylate) with perfluorocyclobutyl aryl ether moiety as crosslinking unit: thermally stable polymer with high glass transition temperature

Abstract: PMMA-based copolymer containing aryl TFVE moieties prepared by copolymerization of MMA and TFVOPMA monomer containing aryl TFVE group and thermal cross-linked by [2π + 2π] cycloaddition reaction of aryl TFVE moieties.

Cited by 28 publications

References 42 publications

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO2 nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO2 nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Surface Modification of Matrimid® 5218 Polyimide Membrane with Fluorine-Containing Diamines for Efficient Gas Separation

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Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO₂ nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer

Fabrication of PVDF mixed matrix nanofiltration membranes incorporated with TiO₂ nanoparticles and an amphiphilic PVDF‐g‐PMMA copolymer