Infrared absorption enhancement of fluorinated poly‐acrylate thin films on Co‐alloy substrate

Zhang, L.; Oh, Chang-Mok

doi:10.1002/sia.2356

Cited by 3 publications

(5 citation statements)

References 28 publications

(25 reference statements)

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“…This is the result of phase separation of the fluoroalkyl segments [9]. It was also observed that the polymer surface was nearly completely covered with fluoroalkyl groups which appeared brighter, and the darker small areas between the grainy structures were referred to the softer non-fluorinated acrylate [38]. Basically, the interaction between acrylate polymers and the polar mica substrate is smaller than the interaction between F-containing groups and mica surface, and acrylate polymers will collapse on a mica surface.…”

Section: Surface Property Of the Latex Filmsmentioning

confidence: 88%

Preparation and characterization of fluorinated acrylate copolymer latexes by miniemulsion polymerization under microwave irradiation

Xiong

Guo

et al. 2010

Journal of Fluorine Chemistry

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Section: Surface Property Of the Latex Filmsmentioning

confidence: 88%

Preparation and characterization of fluorinated acrylate copolymer latexes by miniemulsion polymerization under microwave irradiation

Xiong

Guo

et al. 2010

Journal of Fluorine Chemistry

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“…Figure (c–e) shows the ATR‐FTIR spectra of the NS‐Br functionalized with PBA (NS‐PBA), PTFEM (NS‐PTFEM), and PHFIPA (NS‐PHFIPA). The results show the emergence of new peaks corresponding to the infrared absorption of the carbonyl group in PBA at 1735 cm −1 , in PTFEM at 1750 cm −1 , and in PHFIPA at 1782 cm −1 , and CH stretching bands at 2840–3000 cm −1 . For PTFEM the characteristic peaks associated with this polymer were observed in the FTIR spectrum [Fig.…”

Section: Resultsmentioning

confidence: 92%

“…(d)], including peaks at 1160 and 1280 cm −1 and the peak at 630 cm −1 due to CF 3 adsorption . For the PHFIPA, the CF 3 rocking/wagging and CF 3 stretching can be observed at 695 and 1385 cm −1 respectively …”

Section: Resultsmentioning

confidence: 99%

“…57 For the PHFIPA, the ACF 3 rocking/wagging and CAF 3 stretching can be observed at 695 and 1385 cm 21 respectively. 58 TGA measurements were used to investigate the grafting density of the different monomers on the nanosilica surface. Figure 2(c-e) shows the TGA results for the NS-PBA, NS-PTFEM, and NS-PHFIPA samples in the range of 25-600 8C.…”

Section: Articlementioning

confidence: 99%

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Facile preparation of superhydrophobic and oleophobic surfaces via the combination of Cu(0)‐mediated reversible‐deactivation radical polymerization and click chemistry

Enayati

Abbaspourrad

2018

J. Polym. Sci. Part A: Polym. Chem.

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The fabrication of novel hydrophobic, superhydrophobic, and oleophobic surfaces on glass using nanosilica particles modified with polymer brushes prepared via surface initiated Cu(0)‐mediated reversible‐deactivation radical polymerization was demonstrated. Monomers including n‐butyl acrylate, 2,2,2‐trifluoroethyl methacrylate, and 1,1,1,3,3,3‐hexafluoroisopropyl acrylate were used to synthesize a series of nanosilica–polymer organic/inorganic hybrid materials. Products were analyzed using infrared spectroscopy, thermogravimetric analysis, scanning and transmission electron microscopy. The coated nanosilica showed core–shell structures that contains polymer brushes up to 67 wt %. The application of these particles for modifying surface wettability was examined by covalently attaching them to glass via a recently developed one‐pot “grafting to” methodology using “thio‐bromo click” chemistry. Atomic force microscopy topographic images show up to 25 times increase in roughness of the coated glass compared to blank glass sample. Contact angle measurements showed that nanosilica coated with PBA and PTFEM produced hydrophobic glass surfaces, while a superhydrophobic and oleophobic surface was generated using nanosilica functionalized with PHFIPA. This novel methodology can produce superhydrophobic and oleophobic surfaces in an easy and fast way without the need for tedious and time‐consuming processes, such as layer‐by‐layer deposition, high temperature calcination, and fluorinated oil infusion. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018

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“…In addition, as shown by ATR-FTIR in Fig. 3c, the peak of 1256 cm -1 is ascribed to C-F 3 stretching vibration of polymers 34 . Upon ALD treatment, detectable C-F 3 shifts from 1256 cm -1 to 1250 cm -1 were found in 6FDA-TFDB-x precursor membranes, which ascribe to the increased interaction between F and Al with cycles since the heavy mass Al reduces the vibration frequency of C-F 3 stretching and rocking.…”

Section: Structural Characterization Of the 6fda-tfdb-x Cms Membranesmentioning

confidence: 82%

Formation of atomically distributed Al-F3 nanoparticles towards precisely modulating pore Size of carbon molecular sieve gas separation membranes

Li,

Chen,

Zhang

et al. 2024

Preprint

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Carbon molecular sieve (CMS) membranes exhibit superior capability in separating gas mixtures efficiently. However, it remains a grand challenge to precisely tune the pore size and distribution of CMS membranes to further improve their molecular sieving properties. Herein, we report an approach of finely modulating CMS pore structure by using the reactive Al(CH3)3 to in situ defluorinate the polymer precursor to form Al-Fx(CH3)3-x in the polymer matrix, which is further converted to atomic-level Al2O3 and Al-F3 in the polymer matrix. These nanoparticles play the key role in regulating the pore size of CMS membranes by suppressing the formation of unfavorable large pores during pyrolysis, thus enhancing the gas selectivity considerably. The resultant CMS membranes demonstrate a H2/CH4 and CO2/CH4 selectivity of 192.6, and 58.4, respectively, 128% and 93% higher than the untreated samples, residing far above the latest upper bounds. The design principle of this work paves the way for precisely manipulating CMS pore size and developing molecularly selective membranes with optimal separation performance.

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Infrared absorption enhancement of fluorinated poly‐acrylate thin films on Co‐alloy substrate

Cited by 3 publications

References 28 publications

Preparation and characterization of fluorinated acrylate copolymer latexes by miniemulsion polymerization under microwave irradiation

Preparation and characterization of fluorinated acrylate copolymer latexes by miniemulsion polymerization under microwave irradiation

Facile preparation of superhydrophobic and oleophobic surfaces via the combination of Cu(0)‐mediated reversible‐deactivation radical polymerization and click chemistry

Formation of atomically distributed Al-F3 nanoparticles towards precisely modulating pore Size of carbon molecular sieve gas separation membranes

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