Effect of PA66 nanofiber yarn on tensile fracture toughness of reinforced epoxy nanocomposite

Ahmadloo, Ebrahim; Gharehaghaji, Ali Akbar; Latifi, Masoud; Saghafi, Hamed; Mohammadi, Narges

doi:10.1177/0954406218781910

Cited by 20 publications

(14 citation statements)

References 40 publications

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“…Through the adjustment in the ratio of the rotary speed of metallic funnel to the translational speed of the core yarns in the assembly, twist per meter (TPM) is defined according to the winding speed, rotating speed and roller diameter, and thus serves as a critical parameter associated with yarn production and yarn structure. [21][22][23][24][25][26][27] Therefore, we refer to the definition of TPM to measure the preparation of nanofiber-wrapped yarns of various specifications. Since the yarn keeps the same thickness of 200 D, the definition of TPM based on our experimental setting is as follows:…”

Section: Preparation Of Piezoelectric Wrapped Yarnsmentioning

confidence: 99%

Enhancing piezoelectricity of poly(vinylidene fluoride) nano‐wrapped yarns with an innovative yarn electrospinning technique

Peng

Wang

et al. 2021

Polymer International

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Piezoelectric textiles have earned widespread acceptance in the application of wearable sensors owing to the stabilized energy conversion properties, high sensitivities and steady mechanical properties. In this study, silver-coated nylon yarns are used as a core with poly(vinylidene fluoride) nanofibers as a wrap material, forming piezoelectric wrapped yarns. The effect of spinning process parameters on the structure and crystallinity of the piezoelectric yarn is investigated through studying the mechanical properties, ⊎-phase ratio, crystallinity and piezoelectric properties. The results indicate that the crystallinity of the wrapped yarn reaches 49.57% in this experiment, and when used for piezoelectricity, the piezoelectric voltage constant can reach up to 0.4323 mV m N −1 . The wrapped yarns possess good softness and structural advantages of the sensing layer and thus show a great variety of application potential, such as in wearable and flexible sensors.

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Section: Preparation Of Piezoelectric Wrapped Yarnsmentioning

confidence: 99%

Enhancing piezoelectricity of poly(vinylidene fluoride) nano‐wrapped yarns with an innovative yarn electrospinning technique

Peng

Wang

et al. 2021

Polymer International

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“…Among these synthetic polymers, nylon 66 (polyamide 66, PA66) is a multifunctional synthetic thermoplastic polymer broadly used in textiles, parachutes, biomedical fields, and functional materials [25]. It was reported that PA66 has been successfully used to modify epoxy resins to achieve tensile toughness enhancement [26], however there has been limited work related to the use of PA66 for the modification of natural polymers, especially gelatin. Owing to its anti-abrasion resistance, high mechanical strength, light weight, relatively low cost and, very importantly, biological safety [27][28][29][30][31], PA66 can be used as a potential modification material for gelatin.…”

Section: Introductionmentioning

confidence: 99%

Application of Solution Blow Spinning for Rapid Fabrication of Gelatin/Nylon 66 Nanofibrous Film

Yang

Shen

Zou

et al. 2021

Foods

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Gelatin (GA) is a natural protein widely used in food packaging, but its fabricated fibrous film has the defects of a high tendency to swell and inferior mechanical properties. In this work, a novel spinning technique, solution blow spinning (SBS), was used for the rapid fabrication of nanofiber materials; meanwhile, nylon 66 (PA66) was used to improve the mechanical properties and the ability to resist dissolution of gelatin films. Morphology observations show that GA/PA66 composite films had nano-diameter from 172.3 to 322.1 nm. Fourier transform infrared spectroscopy and X-ray indicate that GA and PA66 had strong interaction by hydrogen bonding. Mechanical tests show the elongation at break of the composite film increased substantially from 7.98% to 30.36%, and the tensile strength of the composite film increased from 0.03 MPa up to 1.42 MPa, which indicate that the composite films had the highest mechanical strength. Water vapor permeability analysis shows lower water vapor permeability of 9.93 g mm/ m2 h kPa, indicates that GA/PA66 film’s water vapor barrier performance was improved. Solvent resistance analysis indicates that PA66 could effectively improve the ability of GA to resist dissolution. This work indicates that SBS has great promise for rapid preparation of nanofibrous film for food packaging, and PA66 can be applied to the modification of gelatin film.

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“…Using thermoplastics as additives in thermoset-based CFRPs is an attractive method for enhancing their fracture toughness [11][12][13][14]. These additives can be in the form of particles [15][16][17][18], film [19,20], or fibers [21][22][23][24][25][26], and range in size from nano-to micrometers. These types of materials have long been used for toughening laminates, except for nanofibers which were introduced in the last few years [27] and have not attracted researchers' attention until recently [28].…”

Section: Introductionmentioning

confidence: 99%

The Thickness Effect of PSF Nanofibrous Mat on Fracture Toughness of Carbon/Epoxy Laminates

et al. 2021

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The geometrical features of nanofibers, such as nanomat thickness and the diameter of nanofibers, have a significant influence on the toughening behavior of composite laminates. In this study, carbon/epoxy laminates were interleaved with polysulfone (PSF) nanofibrous mats and the effect of the PSF nanomat thickness on the fracture toughness was considered for the first time. For this goal, the nanofibers were first produced by the electrospinning method. Then, double cantilever beam (DCB) specimens were manufactured, and mode-I fracture tests were conducted. The results showed that enhancing the mat thickness could increase the fracture toughness considerably (to about 87% with the maximum thickness). The toughening mechanism was also considered by presenting a schematic picture. Micrographs were taken using a scanning electron microscope (SEM).

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Effect of PA66 nanofiber yarn on tensile fracture toughness of reinforced epoxy nanocomposite

Cited by 20 publications

References 40 publications

Enhancing piezoelectricity of poly(vinylidene fluoride) nano‐wrapped yarns with an innovative yarn electrospinning technique

Enhancing piezoelectricity of poly(vinylidene fluoride) nano‐wrapped yarns with an innovative yarn electrospinning technique

Application of Solution Blow Spinning for Rapid Fabrication of Gelatin/Nylon 66 Nanofibrous Film

The Thickness Effect of PSF Nanofibrous Mat on Fracture Toughness of Carbon/Epoxy Laminates

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