Preparation and surface properties of silicon-containing waterborne polyurethane functionalized with fluorine-containing acrylate and micro-nano silica

Cai, Qi; Huang, Jiemin; Weng, Rui; Liu, Shichen

doi:10.1007/s11595-018-1811-2

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…The hydrophobicity of HPU surface is based upon surface geometrical microstructure (roughness) and surface chemical composition (intrinsic hydrophobicity) and the surface geometrical microstructures (roughness) [29]. The inherent hydrophobic character of HPU nanocomposite is provided by the nonpolar moieties such as long aliphatic hydrocarbon chains of HBSP and aliphatic and aromatic parts of diisocyanates.…”

Section: Determination Of Water Contact Anglementioning

confidence: 99%

Multifaceted bioinspired hyperbranched polyurethane nanocomposite as a non-contact triggered self-healing material

Duarah¹,

Deka²,

Karak³

2020

Express Polym. Lett.

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The current investigation reports in situ fabrication of hyperbranched polyurethane (HPU) nanocomposites with different weight percentages of functionalized silica nanoparticle as nano-reinforcing material. Silica nanoparticles were functionalized with sodium dodecyl sulfate and polyethylene glycol using a facile, simple one-pot method. The nanomaterial and the HPU nanocomposites were assessed by Fourier Transform Infrared Spectroscopy (FTIR), Ultraviolet (UV)-visible, X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), mechanical and thermal studies. The fabricated nanocomposites demonstrated notable tensile strength (25.8 MPa), excellent elongation at break (1495%), outstanding toughness (340.88 MJ•m -3 ), good scratch hardness (7.5 kg), significant impact strength (19.02 kJ•m -1 ) and sufficient improvement in hydrophobicity (105.2° from 76.7°). They also demonstrated remarkable non-contact triggered thermo-responsive shaperecovery (97.6-99.4%). Moreover they displayed efficient self-healing behavior within just 20 s under microwave (360 W). The nanocomposites also exhibited biodegradation by bacterial strains, Pseudomonas aeruginosa, and Bacillus subtilis. Thus, the present work promotes this biodegradable nanocomposite as a potential high performing self-healing and selfcleaning material.

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Section: Determination Of Water Contact Anglementioning

confidence: 99%

Multifaceted bioinspired hyperbranched polyurethane nanocomposite as a non-contact triggered self-healing material

Duarah¹,

Deka²,

Karak³

2020

Express Polym. Lett.

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“…Coatings and films based on polyurethanes modified with fluorinated compounds are currently subject of wide interest due to their hydrophobic character and unique properties [1][2][3][4][5]. Recently, research attention was dedicated to fluorinecontaining waterborne polyurethanes for ecological varnishes [6][7][8][9][10][11]. The fluorine-containing polyurethane coatings, characterized by high hydrophobicity, are less toxic and have favourable properties compared to polyurethane varnishes based on organic solvents or solvent-free systems containing free isocyanates.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane cationomers containing fluorinated soft segments with hydrophobic properties

et al. 2021

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The synthesis of ecological waterborne polyurethane cationomers containing fluorinated polyol (0–20 wt.%) was successfully performed. FTIR and NMR analysis results confirmed the structure of the obtained polyurethane cationomers and incorporation of fluorinated component into the polyurethane chains. Average molar mass and phase structure of the obtained PU thin films were determined based on GPC, FTIR, WAXD and SEM-EDX results. The obtained cationomers have linear structures with clearly visible microphase separation of soft and hard segment domains; the presence of fluorinated polyol changes the strength of hydrogen bonds and in consequence degree of phase separation. The activation energy of glass transition was calculated based on multi-frequency DSC data. It has been shown that the presence of soft fluorinated segments in the cationomer structure strongly influences the hydrophobic, thermal and mechanical properties of the obtained films.

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“…Organic fluorine and silicone with low surface energy and good UV‐resistance are usually used for the modification of acrylic polymers 3–6 . Especially, in order to combine the performances of fluorine and silicone, they are introduced into the molecular structure together by physical blending or chemical reaction 7–12 . From Alessandrini 13 to Ershad‐Langroudi, 14 many researchers have verified the superiority of silicon‐fluorinated acrylic polymers through theoretical research and practical exploration.…”

Section: Introductionmentioning

confidence: 99%

Weathering modification of acrylic emulsion by introducing UV absorbing groups

Lei

Zhou

Chen

et al. 2021

J of Applied Polymer Sci

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A new kind of UV‐absorbing silicon‐fluorinated acrylic emulsion was prepared by emulsion polymerization with 4‐allyloxy‐2‐hydroxybenzophenone, 3‐methacryloxypropyltrimethoxysilane (MPS) and hexafluorobutyl methacrylate (HFMA) as functional monomers. The emulsion and its coating were characterized by transmission electron microscope, Fourier transform infrared spectrum (FTIR), X‐ray photoelectron spectroscopy, ultraviolet absorption spectrum，thermo‐gravimetric analysis, water contact angle (CA), and artificial accelerated aging test. The results indicated that the emulsion with core‐shell structure was synthesized and showed prominent absorption peaks at 320 and 350 nm. The water CA of the coating was increased from 70.2° to 86.7° because of the incorporated HFMAs and MPSs. Both of the initial and final decomposition temperatures of the coating were increased by more than 20°C compared with those of the unmodified coating. After 10 days of accelerated aging, the color difference (ΔE) and rate of loss of gloss (ΔG) were only 2.78% and 5.22%, while those of the unmodified coating were as high as 22.94% and 78.57%, respectively. Because of the UV absorbers were incorporated by chemical reaction, the new coating had a more durable and effective anti‐ultraviolet performance compared with the coatings the UV absorbers were introduced by physical blending.

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Preparation and surface properties of silicon-containing waterborne polyurethane functionalized with fluorine-containing acrylate and micro-nano silica

Cited by 11 publications

References 30 publications

Multifaceted bioinspired hyperbranched polyurethane nanocomposite as a non-contact triggered self-healing material

Multifaceted bioinspired hyperbranched polyurethane nanocomposite as a non-contact triggered self-healing material

Polyurethane cationomers containing fluorinated soft segments with hydrophobic properties

Weathering modification of acrylic emulsion by introducing UV absorbing groups

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