Novel cationic polyurethane-fluorinated acrylic hybrid latexes: Synthesis, characterization and properties

Hua, Xueming; Shen, Yiding; Li, Xiaorui

doi:10.1016/j.colsurfa.2011.03.056

Cited by 49 publications

(28 citation statements)

References 24 publications

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“…This is in agreement with previous reports of simple PUUAtype latex films in which the fluorinated acrylic copolymer initially confined in the core of the hybrid PUUA particle becomes a non-negligible component of the air-film surface in the as-cast latex film, with further significant enrichment in the fluorinated component upon thermal annealing [18]. The highly fluorinated nature of the MPUUA film surface was supported by the results of surface energy evaluation on a series of MPUUA-1B films at increasing contents of the PBF-1B modifier.…”

Section: Surface and Bulk Properties Of Pbf Latex Filmssupporting

confidence: 92%

“…Aqueous PU or PUU ionomer dispersions have been modified by emulsion copolymerization of a polyurethane diacrylate with fluorinated acrylic monomers [17][18][19] or simultaneous hydrolytic chain extension of a polyester-diisocyanate prepolymer and emulsion copolymerization of fluorinated and unfluorinated methacrylates [20]. In a different approach, Li et al [21] modified a preformed WB PUUA by blending with 2 wt.% of a fluorinated block copolymer of acrylic acid and 2-(perfluorononenyloxy)ethyl methacrylate (FNEMA), whereas Jiang et al [5] blended a WB PUU with a fluorinated acrylic latex also based on FNEMA.…”

Section: Introductionmentioning

confidence: 99%

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Facile hydrophobic modification of hybrid poly(urethane-urea)methacrylate aqueous dispersions and films through blending with novel waterborne fluorinated acrylic copolymers

et al. 2011

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Aqueous dispersions of fluorinated particles (PBF) based on copolymers of butyl acrylate (BA) with 2-(perfluorononenyloxyl)ethyl methacrylate (FNEMA), 2,2,3,3-tetrafluoropropyl acrylate (TFPA), and 2,2,3,3,4,4,5,5-octafluoropentyl acrylate (OFPA), respectively, were synthesized by emulsion polymerization in the presence of unfluorinated and fluorinated anionic surfactant binary mixtures. These fluorinated dispersions showed good to excellent colloidal stability, as determined by freeze-thaw, centrifugation, and critical coagulation concentration measurements. Blending of small amounts (1-10 wt%) of PBF latex particles with a waterborne hybrid poly(urethane-urea)-methacrylate (PUUA) resulted in a series of slightly fluorinated modified PUUA (MPUUA) with good film forming properties and low surface energy. The precursor PUUA had been synthesized separately by simultaneous chain extension of a poly(ester-urethane)-diisocyanate with ethylenediamine and soapless free radical polymerization of methyl methacrylate (MMA) swelling the resulting branched or slightly crosslinked poly(urethane-urea) (PUU) self-dispersible ionomer particles. The results of dynamic light scattering and Zeta potential measurements suggest that merging of PUUA and PBF particles and either engulfing or interdiffusion of the incompatible macromolecular phases occurred to some extent already in the colloidal state. Highly hydrophobic films with surface energy as low as 17 mJ/m2 were obtained upon hybridization of PUUA with the FNEMA copolymer. Thermal annealing allowed to minimize the effects of fast surface dynamics leading ultimately to water absorption, and to promote synergistic enhancement of the resulting hybrid film hardness, as required for coating applications

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Section: Surface and Bulk Properties Of Pbf Latex Filmssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Facile hydrophobic modification of hybrid poly(urethane-urea)methacrylate aqueous dispersions and films through blending with novel waterborne fluorinated acrylic copolymers

et al. 2011

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“…As a rule, the XPS peak for F M a n u s c r i p t 1s represents an unresolved signal and various conditions of F 1s cannot be visualized independently of the X-ray source (Mg Kα-or Al Kα-radiation). It is characteristic for fluorinated polymers [36][37][38][39][40], polymers grafted onto various solid films [41][42][43][44] and SiO 2 particles [45][46][47]. For the presented cases the binding energy of strong F 1s at XPS spectra is in …”

Section: A N U S C R I P Tmentioning

confidence: 96%

Preparation and antifrictional properties of surface modified hybrid fluorine-containing silica particles

Gorbunova

Zapevalov

Бекетов

et al. 2015

Applied Surface Science

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“…Fluorine-modified polyurethane materials have many advantages, such as low water absorptivity, attractive surface properties, excellent resistance to ultraviolet radiation, excellent flexibility, good wear-ability and high weather resistance. [4][5][6][7] The general methods of introduction fluorinated segment mainly focus on introduction of double bonds at the chain end through the reaction of small molecules containing hydroxyl alkene monomers and isocyanate of polyurethane prepolymers and then polymerization with fluorinated alkene monomer, [8][9][10] or direct introduction of hydroxyl sealing side of high molecular weight perfluorinated polyether oil so as to achieve fluorine-modified polyurethane. [11][12][13][14][15] Two methods have their own advantages and disadvantages, the first method is more complex, but has better compatibility between segments, micro-phase separation can be suppressed at a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Study on waterborne polyurethanes based on poly(dimethyl siloxane) and perfluorinated polyether

Yang

Zhou

2015

Macromol. Res.

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Methylsiloxane and fluorinated segments were introduced into the polymer backbone of polyurethane by direct reaction of isocyanate with dialcohol terminated perfluoropolyether (E10-H) and poly(dimethyl siloxane) (PDMS). The polyurethane structure was revealed by Fourier transform infrared spectrometer in ATR mode and Xray photoelectron spectroscope. It was found that the silicon and fluorine moieties easily migrated to the surface of material in film-forming process due to their lower energy, so the water contact angle on membrane surface was greatly enhanced (maximum 100.1º), and the hydrophobic property of material was improved. Different degree of phase separation was observed by scanning electron microscope. Increment of PDMS or E10-H content caused the phase separation obviously, but section of PDMS and E10-H modified polyurethane showed that phase separation reduced. The linear dynamic viscoelastic measurements indicated that the dynamic storage modulus of all samples increased with the increment of frequency, and PDMS modified WPU's grew fastest. The slope of G' vs. G'' showed a decrement, so each sample had a shear thinning behavior. The perfluoropolyether oil was to reduce viscosity of the system.

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Novel cationic polyurethane-fluorinated acrylic hybrid latexes: Synthesis, characterization and properties

Cited by 49 publications

References 24 publications

Facile hydrophobic modification of hybrid poly(urethane-urea)methacrylate aqueous dispersions and films through blending with novel waterborne fluorinated acrylic copolymers

Facile hydrophobic modification of hybrid poly(urethane-urea)methacrylate aqueous dispersions and films through blending with novel waterborne fluorinated acrylic copolymers

Preparation and antifrictional properties of surface modified hybrid fluorine-containing silica particles

Study on waterborne polyurethanes based on poly(dimethyl siloxane) and perfluorinated polyether

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