Cationic fluorinated polyacrylate core‐shell latex with pendant long chain alkyl: Synthesis, film morphology, and its performance on cotton substrates

Abstract

We synthesized a novel cationic fluorinated polyacrylate latex (FLDH) with pendant long chain alkyl by copolymerization of perfluoroalkyl ethyl acrylate, lauryl methacrylate, dimethylaminoethyl methacrylate, and 2-hydroxypropyl acrylate. FTIR, 1 H-NMR, TEM, DSC, and TGA were used to characterize the as-prepared FLDH. Then fine morphology, components, and hydrophobicity of films on silicon wafer and cotton substrates were investigated by scanning electron microscope, field emission scanning electronic microscope, atomic force microscope, X-ray photoelectron spectroscopy (XPS), contact angle meter, etc. Results showed that the FLDH particles had quasi-spherical core-shell structure with an average diameter of 144 nm. The core-shell FLDH film thus had two T g and its thermal property was improved compared to fluorine-free acrylate latex. FLDH could form a film on both the cotton fiber and silicon wafer substrate. At an amplification of <60,000 (of the original fiber) and the observation rule (working distance) of >100 nm, FLDH showed a smooth resin film on the treated fabric/fiber surface. However, as the observation rule decreased to 2 nmalmost a molecular lever-the FLDH film mostly exhibited an inhomogeneous structure and uneven morphology in its atomic force microscope images. There were many low or high peaks in FLDH topography. Consequently, in 5 lm 2 scanning field, the root mean square roughness of FLDH film reached to 0.506 nm. XPS analysis indicated the perfluoroalkyl groups had the tendency to enrich at the surface. In addition, water contact angle of the treated fabric could attain 146.2 . FLDH do not influence whiteness of the treated fabric but will make it slightly stiff at high doses.

Synthesis, film morphology, and performance on cotton substrates of dodecyl/piperazine functional polysiloxane

“…The precise micro‐morphology of the DPSO films on cotton substrates was studied by AFM. As natural fibers are easily deformed duing AFM observation, a polished and rigid silicon wafer is usually used as substrate to observe film morphology and microstructures of functional polymer . And to ensure a monomolecular film coated on the substrate, 0.03% DPSO solution was used to treat the wafers by immersion.…”

“…DPSO was dissolved in ethyl acetate to form a 0.03 wt % ethyl acetate solution. A pretreated silicon wafer was impregnated into the above solution and kept vertically for several seconds, then dried at 80°C for 5 min and cured at 170°C for 3 min. Finally, the sample was kept in a desiccator to balance for 24 h and noted as DPSO/Sil (for the silicon wafer substrate).…”

Synthesis of Methylacryloypropyl-POSS/Poly(fluorine-acrylate) Core-Shell Nanocomposites and Effect on Thermal Properties of Materials

“…Polyacrylate latexes are efficient, environmentally friendly materials, which have attracted more attention because of the low volatile organic compounds and extensive applications in our daily life as adhesive, coatings, particularly as building coating [1][2][3] . To modify the age-resistance and physical properties of polyacrylates, many researchers have focused on synthesizing the fluorine-containing polyacrylates or fluorinated polyacrylate emulsion and core-shell latexes [4][5][6] . However the major shortcomings of polyacrylate material are low glass transition temperature (T g ) and relatively poor thermal stabilities.…”

Fluorine containing self‐crosslinking acrylic latexes with reduced flammability and their application as polymer binders for heterogeneous cation‐exchange membranes

“…Consequently, many researchers have devoted themselves to investigating and developing fluorinated acrylic latexes due to their special surface properties, good adhesion to matrices, and environmental protection value. These materials have been used especially as chemical resistant coatings for textile, paper, and leather . Up to date, fluorinated acrylate polymer emulsions with various structures, such as graft, random, and core–shell have been synthesized via diverse emulsion polymerization techniques.…”