Synthesis of cross-linkable fluorinated core–shell latex nanoparticles and the hydrophobic stability of films

Zhang

Journal of Nanomaterials

et al. 2019

Self Cite

Polyacrylate nanoparticles are widely applied and typically prepared by many polymerization methods. However, poor long-term storage stability of nanoparticles limited their use, so some methods are carried out to overcome it. In this paper, we investigated a series of fluorinated polyacrylate nanoparticles to improve the long-term storage stability of polyacrylate nanoparticles. We found that increasing fluorine content resists the aggregation of nanoparticles during long-term storage. Furthermore, a higher content of fluorine can improve the hydrophobicity of latex polyacrylate film and increase the refractive index of latex polyacrylate film. The properties of the polyacrylate nanoparticles and latex film can thus be controlled by changing fluorine contents, which in turn provides key insights into the design of functional polymer material.

Section: Effect Of Fluorine Contents On Surface Morphology Andmentioning

confidence: 99%

“…And the water absorptions of SW1, SW2, and SW3 are 5.9%, 1.2%, and 0.7%, respectively. Water absorption is actually a manifestation of wettability [53]. If the film surface has plenty of hydrophilic groups, it is advantageous for the water to enter the polymer film body under the action of capillary absorption through the liquid-solid surface pores.…”

mentioning

confidence: 99%

Influence of Varied Fluorine Contents on Long-Term Storage Stability of Polyacrylate Nanoparticles and Film Properties

Zhang

Journal of Nanomaterials

et al. 2019

Self Cite

“…Then the samples were soaked and stirred in acetone for 36 h at room temperature. The samples were isolated and reweighed after drying at 80 • C for 2 h (W f ), the percentage of gel contents were calculated according to Equation (1) [23,24]:…”

Section: Characterizationmentioning

confidence: 99%

“…In addition, it is observed that borneol-based polymer is biocompatible and environmentally friendly, but the expensive price of monomers limits its effective application [16,20,21]. In general, core-shell microspheres composed of hydrophobic borneol components and hydrophilic components can solve this problem [22,23]. Because the microspheres with core-shell structure collapse to form films, the hydrophobic shell is enriched on the film surface due to surface tension.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cross-Linkable Waterborne Polyurethane-Acrylate Coating Films with Multifunctional Properties

Chen

et al. 2020

Coatings

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Self-migration or unstable phase inversion occurs when the application conditions are varied, which limits the application of polyurethane-acrylate (PUA) composite films. In this paper, cross-linked polyurethane/poly(methyl methacrylate-co-borneol acrylate) shell microspheres were prepared by using the seeded emulsion polymerization method. The core-shell structure of these samples was identified by dynamic light scattering (DLS) and high-resolution transmission electron microscope (HR-TEM). Moreover, HR-TEM images indicated that the core-shell structure of the microsphere does not undergo complete phase inversion. In addition, with increasing content of borneol acrylate in the shell, the water resistance and antibacterial adhesion of films were improved. The X-ray photoelectron spectroscopy (XPS), Energy Dispersive Spectrometer (EDS), water contact angle (CA) measurements, antibacterial and anti-adhesion tests demonstrate that the C/N ratios of films from the inside to the upper surface had an obvious gradient in growth, indicating the shell component (polyborneol acrylate) was predominantly present at the surface of films after coalescence in cross-linked core-shell PUA. It was found that a suitable degree of cross-linking contributes to the segregation of the hydrophobic component (borneol groups) on the film surface. As a consequence, the excellent water resistance, cytocompatibility, and antibacterial properties endowed this series of polymer materials with promising application potential in the biomedical field.

“…Fluoropolymers have recently attracted considerable attention due to their excellent chemical resistance, low dielectric constant, good hydrophobicity/oleophobic, and weatherability [1][2][3][4], which are extensively used in the fields of microelectronic devices, coatings, optical devices, finishing agents, and biomedical implants [5][6][7][8]. Compared with traditional fluoropolymer like polytetrafluoroethylene (PTFE) [6,9], poly(chlorotrifluoroethylene) might have a better application prospect since it is incomparably superior to gas barrier and optical transmittance.…”

Section: Introductionmentioning

confidence: 99%

Engineered Multifunctional Fluorinated Film Based on Semicontinuous Emulsion Polymerization Using Polymerizable Quaternary Ammonium Emulsifiers

International Journal of Polymer Science

Wang

et al. 2018

Self Cite

Along with society's progress, high-quality coatings are widely used. Although fluorinated polymers were successfully prepared by semicontinuous emulsion polymerization with surfactants, chlorotrifluoroethylene (CTFE), and acrylate monomers, the optimization collocation of surfactants still has room for improvement. The traditional emulsifiers are physically absorbed onto the surface of latex particles. The latex film generated by latex particles is unstable in water, which limits its application. Herein, a novel series of cationic quaternary ammonium polymerizable surfactant was selected because it can react with CTFE and acrylate monomers and can become a part of the polymers. We also studied the effects of emulsifier type on resultant emulsion properties. In addition, wonderful weatherability, water resistance, and antibacterial and antifouling of the multifunctional fluorinated films were observed, which would open up a bright future for coating industries.