Influence of silane coupling agent on the synthesis and properties of nanocomposites obtained via in situ catalytic copolymerization of ethylene and propylene in the presence of modified Nafen™ Al2O3 nanofibers

Bravaya, N. M.; Saratovskikh, S. L.; Панин, А. Н.; Faingol’d, E. E.; Zharkov, Igor V.; Babkina, O. N.; Васильев, С. Г.; Бубнова, М. Л.; Volkov, Vitalii I.; Lobanov, Maxim V.

doi:10.1016/j.polymer.2019.04.056

Cited by 8 publications

(79 citation statements)

References 61 publications

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“…Coupling agents with alkenyl moieties have been reported as valuable fiber modifiers in thiol–ene click reactions, 70 and were also used in the synthesis of nanocomposites by copolymerization. 71…”

Section: Resultsmentioning

confidence: 99%

Coupling agents with 2,4,6,8-tetramethylcyclotetrasiloxane core – synthesis and application in styrene–butadiene rubber production

Sokolnicki

Franczyk

Kozak

et al. 2023

Inorg. Chem. Front.

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Section: Resultsmentioning

confidence: 99%

Coupling agents with 2,4,6,8-tetramethylcyclotetrasiloxane core – synthesis and application in styrene–butadiene rubber production

Sokolnicki

Franczyk

Kozak

et al. 2023

Inorg. Chem. Front.

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“…61 In this study, it was observed that even after surface functionalization, there exist loosely associated aggregates of VT-ANF in UPE, a similar observation as made by. 39,49 In this regard, it is safe to say that the small aggregations are found at higher loading levels even after surface functionalization. Although small associates of VT-ANF are observed, the high surface area of 122 m 2 /g as observed from BET analysis contributed towards enhanced surface reactivity with the surrounding polymer, thus promoting dispersion.…”

Section: Transmission Electron Microscopymentioning

confidence: 99%

“…The same was correlated to the homogenous distribution of ANF in polymer matrix. 49 Additional literature review revealed that tailoring of surface of nanoparticles aids in exploiting the multifunctionality of nanoparticles and their respective nanocomposites. Research by Huang 51 demonstrated that through selective surface manipulation cellulose nanofibers could be successfully implemented for water remediation , 50 and noted that the behavior can aid in developing VOC sensors, ultra-low biofouling surfaces.…”

Section: Introductionmentioning

confidence: 99%

Influence of surface functionalization of ceramic nanofibers on morphological, physical and mechanical properties of unsaturated polyester nanocomposites

Kallagunta

Tate

2022

Composites and Advanced Materials

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Alumina nanofibers at 0.25wt%, 0.5wt%, 0.75wt%, and 1wt% concentration were used to modify unsaturated polyester resin. Additionally, vinyl silane treated alumina nanofibers were used at the same concentrations and were compared to pristine alumina nanofibers. The SEM images showed a variation in the surface morphology when alumina nanofibers and the BET measurement showed surface area increase from 111 m2/g to 122 m2/g when nanofibers were treated with silane agent. The dispersion of alumina nanofibers into the host unsaturated polyester resin was successfully achieved by three roll mill dispersion. The TEM images showed good dispersion of alumina nanofibers in polyester resin. Although pristine nanofibers showed greater agglomeration at 1wt% concentration, the effect of agglomeration was reduced in the 1wt% concentration. The weight loss measurements from TGA showed that the thermal stability of nanocomposites increased with addition of nanofibers and the lower onset degradation temperature can be tailored to improve by a maximum of 5.5% for silane treated nanofiber. Viscosity and contact angle which are key factors affecting the processability has seen to be positively altered by silane treatment. Additional tensile, flexural, and Izod impact properties were evaluated for the nine material systems and the properties were summarized.

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“…An important anisometric additive is alumina nanofibers [ 12 ], which increase the cohesive energy of polymeric materials. This leads to an increase in the strength of some polymers [ 13 , 14 , 15 ] and nanocomposite coatings [ 16 ]. However, the addition of nanofibers to polymers by itself cannot be effective without matching the surface of alumina nanofibers with the physicochemical properties of the matrix.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins

et al. 2023

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The paper describes the effect of the addition of alumina nanofibers on the mechanical properties of the epoxy resin. Alumina nanofibers functionalized with epoxypropyl functional groups are used in this work. The dependence of the mechanical characteristics on the amount of the additive, as well as the features of its distribution in the material, is investigated. In the work, nanocomposites were obtained, which are epoxy resin with aluminum oxide nanofibers. The mechanical properties of the samples were studied by bending tests and differential mechanical analysis (DMA). It has been shown that the addition of alumina nanofibers leads to an increase in ultimate flexural strength. The maximum of this increase is near the percolation threshold of alumina nanofibers in epoxy resin. With the addition of 0.2% alumina nanofibers, the ultimate flexural strength increases from 41 to 71 MPa. It is shown that after exceeding the percolation threshold of nanofibers, the ultimate strength decreases. In this case, the elastic modulus increases from 0.643 to 0.862 GPa. DMA is shown that the glass transition temperature decreases with increasing amount of the additive. This indicates a decrease in the molecular weight of the polymer. By implication, this suggests that the hardener connects the epoxypropyl functional groups on the nanofibers and the epoxy groups in the resin, and as a result of this process, the nanofibers become natural polymer chain length limiters. The data obtained from mechanical testing and differential mechanical analysis can be used to strengthen epoxy resins in polymer composite materials and molding compositions.

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Influence of silane coupling agent on the synthesis and properties of nanocomposites obtained via in situ catalytic copolymerization of ethylene and propylene in the presence of modified Nafen™ Al2O3 nanofibers

Cited by 8 publications

References 61 publications

Coupling agents with 2,4,6,8-tetramethylcyclotetrasiloxane core – synthesis and application in styrene–butadiene rubber production

Coupling agents with 2,4,6,8-tetramethylcyclotetrasiloxane core – synthesis and application in styrene–butadiene rubber production

Influence of surface functionalization of ceramic nanofibers on morphological, physical and mechanical properties of unsaturated polyester nanocomposites

Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins

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