Polyacrylonitrile-based nanofibers—A state-of-the-art review

Kotrappanavar, Nataraj Sanna; Yang, Kap Seung; Aminabhavi, Tejraj M.

doi:10.1016/j.progpolymsci.2011.07.001

Cited by 544 publications

(219 citation statements)

References 192 publications

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“…For the production of nanofibers, polyacrylonitrile (PAN) copolymer was chosen because of its ductility and good adhesion to epoxy resin, which is a typical matrix material for high-performance carbon fiber-reinforced composites [26,27]. The PAN supplied by a carbon fiber manufacturer was dissolved in dimethylformamide (DMF, Molar Chemicals, Hungary) with the aid of a magnetic mixer at 50°C for 6 hours in a beaker.…”

Section: Materials and Specimen Preparationmentioning

confidence: 99%

The effect of needleless electrospun nanofibrous interleaves on mechanical properties of carbon fabrics/epoxy laminates

Molnár¹,

Ko²,

Mészáros³

2014

Express Polym. Lett.

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The relatively easy production of polymer nanofibers by electrospinning has been the subject of many application-oriented investigations over the past few years. Most of these studies address the possibility of using such nanofibers in filtering, biomedical, sensor and clothing applications [1][2][3][4]. Because of their high surface-area-to-volume ratio, the nanofibrous materials could also be efficient reinforcing materials in polymer matrix composites. In these systems, the nanofibers can even act as the primary reinforcement (the nanofibers are the only reinforcing materials) as well as co-reinforcement (in addition to microfibers) [5]. From a mechanical properties point of view, the main problem associated with common fiber-reinforced polymer composite laminates is their weak interlaminar properties. Due to a geometry that is not absolutely planar, much free space occurs between layers of the reinforcing structures, which are filled up by the matrix material during impregnation. Thus, between the layers, the properties are determined mainly by the matrix and voids. The loads induced by shear-or out-of-plane stresses must be borne by this relatively weak matrix, 62The effect of needleless electrospun nanofibrous interleaves on mechanical properties of carbon fabrics/epoxy laminates Abstract. The effect of polyacrylonitrile nanofibrous interlaminar layers on the impact properties of unidirectional and woven carbon fabric (CF)-reinforced epoxy (EP) matrix composites was investigated. The nanofibers were produced directly on the surface of carbon fabrics by a needleless electrospinning method, and composites were then prepared by vacuum-assisted impregnation. Interlaminar shear stress tests, three-point bending, Charpy-impact and instrumented falling weight tests were carried out. The fracture surfaces were analyzed by scanning electron microscopy. Due to the nano-sized reinforcements, the interlaminar shear strength of the woven and unidirectional fiber-reinforced composites was enhanced by 7 and 11%, respectively. In the case of the falling weight impact tests carried out on woven reinforced composites, the nanofibers increased the absorbed energy to maximum force by 64% compared to that measured for the neat composite. The Charpy impact tests indicated that the nanofiber interleaves also led to a significant increase in the initiation and total break energies. Based on the results, it can be concluded that the presence of nanofibers can effectively increase the impact properties of composites without compromising their in-plane properties because the thickness of the composites was not altered by the presence of interleaves. The improvement of the impact properties can be explained by the good load distribution behavior of the nanofibers.

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Section: Materials and Specimen Preparationmentioning

confidence: 99%

The effect of needleless electrospun nanofibrous interleaves on mechanical properties of carbon fabrics/epoxy laminates

Molnár¹,

Ko²,

Mészáros³

2014

Express Polym. Lett.

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“…Portanto, para compreender a estrutura e as propriedades destas CFs, é necessário um detalhamento dos materiais e processos utilizados para formar as fibras [2]. A produção de nanofibras de carbono (CNFs) a partir da poliacrilonitrila (PAN) por meio do uso da técnica de eletrofiação vem despertando interesse [3,4]. As técnicas tradicionais utilizadas para a produção de diferentes formas fibras de carbono permitem obter fibras com diâmetros médios da ordem de 1,5 nm [5,6] a até 500 μm [7].…”

Section: Introductionunclassified

Obtenção E Caracterização De Nanofibras De Poli(acrilonitrila-Co-Acetato De Vinila) Obtidas Por Eletrofiação

Filho¹,

Alvares²,

Simão³

et al. 2017

Anais Do Enemet - Encontro Nacional De Estudantes De Engenharia Metalúrgica, De Materiais E De Minas

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“…Pure PAN and its copolymers have been widely studied for almost a century and various technological applications have been found for them [5]. Studies on nanomaterials are also connected with the development of textronics and etextiles.…”

Section: Introductionmentioning

confidence: 99%

PAN fibers with nanoprecipitated Ag and Au for use in textronics

Karbownik

Rybicki

Karpińska

et al. 2016

Materials Science-Poland

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Silver and gold nanoparticles have been linked with the structure of polyacrylonitrile (PAN) fibers as a result of a synthesis. The nanoparticles were formed in the dimethylformamide (DMF) solution, which is uncommon for their synthesis, but is a typical solvent for polyacrylonitrile. The examination of metallic nanoparticles doped fibers showed the presence of these particles in the samples. Analysis of Energy Dispersive X-ray Spectrometry (EDX) results showed that silver content in the fibers was the same as in the precursors of metal ions. The amount of silver in the fibers was significantly greater than the amount of gold in the corresponding sample. The Dynamic Light Scattering Method (DLS) and Visible and Ultraviolet Spectroscopy (UV-Vis) analyses indicated a difference between the sizes of metallic nanoparticles. The obtained composite polyacrylonitrile fibers doped with silver and gold nanoparticles were characterized by high flexibility and reduced electromagnetic radiation. The authors are convinced that the results obtained during the research will considerably contribute to the development of textronics discipline.

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Polyacrylonitrile-based nanofibers—A state-of-the-art review

Cited by 544 publications

References 192 publications

The effect of needleless electrospun nanofibrous interleaves on mechanical properties of carbon fabrics/epoxy laminates

The effect of needleless electrospun nanofibrous interleaves on mechanical properties of carbon fabrics/epoxy laminates

Obtenção E Caracterização De Nanofibras De Poli(acrilonitrila-Co-Acetato De Vinila) Obtidas Por Eletrofiação

PAN fibers with nanoprecipitated Ag and Au for use in textronics

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