Synthesis of poly(tetrafluoroethylene)/poly(butadiene) core-shell particles and their graft copolymerization

Okaniwa, Motoki

doi:10.1002/(sici)1097-4628(19980411)68:2<185::aid-app2>3.0.co;2-m

Cited by 32 publications

(24 citation statements)

References 8 publications

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“…A mild alternative to produce compounds featuring a perfect distribution of PTFE particles is based on the preparation of core‐shell particles in which the core is constituted by PTFE and the shell by the technopolymer of interest. A perfect dispersion of the PTFE nanoparticles can be anticipated when the matrix is constituted by the same polymer with which the shell is made up . PTFE/PS, PTFE/PMMA and PTFE/polyacrylates 10–12 core‐shell nanoparticles and nanocomposites were recently prepared using this approach.…”

Section: Introductionmentioning

confidence: 99%

Thermal and mechanical properties of PES/PTFE composites and nanocomposites

Righetti

Boggioni

Laus

et al. 2013

J of Applied Polymer Sci

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Polyethersulphone/polytetrafluoroethylene (PES/PTFE) nanocomposites and composites were prepared by precipitation of PES into a PTFE latex-containing nanoparticles. Different samples were obtained by varying the relative ratio between PES and PTFE. The complex crystallization process, discussed within the fractionated crystallization frame, allowed to identify and quantify different dispersion degree of the PTFE nanoparticles within the PES matrix. The different samples were thus divided into nanocomposite and composites. The effect of crystalline PTFE domains on the mobility of PES was investigated and discussed. The dynamic-mechanical behavior was explained in terms of the particle aggregation state. The mechanical properties of the PES/PTFE composites were found to depend on both the dispersion and the concentration of the PTFE nanoparticles. In the glassy state the stiffness of the materials was found to increase with the dispersion degree, resulting higher for the nanocomposite with respect to composites. On the contrary, in the rubbery state the modulus was found proportional to the PTFE nanoparticles concentration, resulting higher in the composites with respect to the nanocomposite.

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Section: Introductionmentioning

confidence: 99%

Thermal and mechanical properties of PES/PTFE composites and nanocomposites

Righetti

Boggioni

Laus

et al. 2013

J of Applied Polymer Sci

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“…An alternative and promising nondestructive approach to produce compounds with a perfect dispersion of PTFE particles is based on the preparation of core‐shell particles in which the core is constituted by PTFE and the shell by a conventional polymer 13–18. Such tailored PTFE‐based core‐shell additives should be able to be perfectly dispersed in the polymeric matrix with which the shell is made up.…”

Section: Introductionmentioning

confidence: 99%

PMMA‐based core‐shell nanoparticles with various PTFE cores

Kapeliouchko

Palamone

Poggio

et al. 2009

J. Polym. Sci. A Polym. Chem.

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Polytetrafluoroethylene (PTFE) latices with spherical and rod‐like particles in the submicrometer size range, were employed as seeds in the emulsifier‐free methylmethacrylate (MMA) emulsion polymerization to obtain PTFE‐polymethylmethacrylate (PMMA) core‐shell nanoparticles. Stable latices were generally obtained. No residual PTFE was found at the end of the reaction. By appropriately choosing the ratio between MMA and PTFE in the reaction mixture, particles with predetermined size and monodisperse or narrow size distribution were prepared. The high structural regularity of the core‐shell samples allows the preparation of film with a periodic distribution of the cores thus ultimately leading to a well structured 2D colloidal crystal. A very peculiar crystallization behavior was observed because of the PTFE compartmentalization in the composite. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 2928–2937, 2009

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“…Therefore, given all these factors, there is an alternative simple approach that can be adopted to compensate for the deficiency of surface modification. Through traditional emulsion polymerization, the core‐shelled nanocomposites are obtained; an improved dispersion, surface activity, and adhesiveness of PTFE can be traced without damaging the surface . In this method, the materials equipped with different sizes, structures, and components are covered on a micro‐ or nanosized core, and it can modify or tailor the materials on a large scale than that of each material taken separately, and has more flexibility in morphology, size, and structure control.…”

Section: Introductionmentioning

confidence: 99%

Coating of polytetrafluoroethylene/polyacrylate: Core‐shelled structure and tribological behaviors

Wang

Ren

et al. 2019

J of Applied Polymer Sci

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In order to improve the tribological properties of polytetrafluoroethylene (PTFE), the core-shelled PTFE/polyacrylate nanoparticles were prepared by seed emulsion polymerization and its tribological behaviors were investigated. The core-shell structure was determined by a Fourier transform infrared spectrometer and transmission electron microscopy. The results of thermoanalysis showed that polyacrylate had lost more weight than PTFE/polyacrylate composite above 300 C, which indicated an improvement in the thermal stability. Moreover, the friction and wear results indicated that friction coefficient of PTFE/polyacrylate coating keeps at a relatively lower level, which is between that of PTFE and polyacrylate, and the wear volume is the smallest, so that an excellent performance of low friction and wear resistance was demonstrated. Besides, the tribological properties of the core-shelled coating are maintained to be stable under high load or high speed. Therefore, the core-shelled nanoparticles would be potential to polymer coating as high-performance solid lubricants.

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Synthesis of poly(tetrafluoroethylene)/poly(butadiene) core-shell particles and their graft copolymerization

Cited by 32 publications

References 8 publications

Thermal and mechanical properties of PES/PTFE composites and nanocomposites

Thermal and mechanical properties of PES/PTFE composites and nanocomposites

PMMA‐based core‐shell nanoparticles with various PTFE cores

Coating of polytetrafluoroethylene/polyacrylate: Core‐shelled structure and tribological behaviors

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