Preparation and characterization of electrospun fibers of Nylon 11

Dhanalakshmi, M.; Jog, J. P.

doi:10.3144/expresspolymlett.2008.65

Cited by 55 publications

(51 citation statements)

References 32 publications

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“…In addition, the specific surface area of nanofibers is approximately 100 times that of normal fibers. Thus, nanofiber membrane filters, when compared to traditional filters, have a higher throughput, lower loss, lower energy consumption, shorter transmission distance, higher adsorption, faster reaction, as well as other advantages [19][20][21]. Polyacrylonitrile (PAN) possesses high mechanical strength thanks to the strong hydrogen bonding of its molecular structure.…”

Section: Fabrication Of Electrospun Polyacrylonitrile Ion-exchange Mementioning

confidence: 99%

Fabrication of electrospun polyacrylonitrile ion-exchange membranes for application in lysozyme adsorption

Chiu¹,

Lin²,

Cheng³

et al. 2011

Express Polym. Lett.

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Abstract. Ion exchange (IEX) chromatography is commonly used in separation and purification systems. However, micropore blockage within its resin structure can easily lead to a reduction in the effectiveness of purification. To tackle this problem, we adopted the concept of membrane separation by combining electrospinning techniques with rapid alkaline hydrolysis to prepare a weak acid IEX nanofibrous membrane (AEA-COOH), consisting of polyethyleneterephthalate (PET) meltblown fabric as a supporting layer, with upper and lower IEX layers consisting of polyacrylonitrile (PAN) nanofibrous membranes. To determine the characteristics of the AEA-COOH membrane, we used the commercial product Sartobind® C IEX membrane as the standard of comparison. Results showed that the base weight and thickness of AEA-COOH were 33 and 64%, relative to Sartobind ® C membrane. The thermo-degradable temperature of AEA-COOH membrane (320°C) was far higher than that of Sartobind ® C (115°C), indicating high thermal stability. Finally, comparisons between the lysozyme adsorption rates and capacity of various IEX membranes confirmed that AEA-COOH was lighter, thinner, faster, possessing higher protein adsorption efficiency than Sartobind ® C membrane.

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Section: Fabrication Of Electrospun Polyacrylonitrile Ion-exchange Mementioning

confidence: 99%

Fabrication of electrospun polyacrylonitrile ion-exchange membranes for application in lysozyme adsorption

Chiu¹,

Lin²,

Cheng³

et al. 2011

Express Polym. Lett.

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show abstract

“…The most frequently used fibers are glass, carbon and aramid fibers, but the use of basalt, flax, hemp and thermoplastic fibers also increases significantly [1][2][3]. Beside the development of the fiber material many researchers have been working on optimising the cross section shape [4][5][6]. Kim and Park [7] compared concrete reinforced by C-shaped, solid and hollow carbon fiber.…”

Section: Introductionmentioning

confidence: 99%

A comparative analysis of hollow and solid glass fibers

Kling

Czigány

2013

Textile Research Journal

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Comparative analyses have been completed on hollow and solid E-type glass fibers. Single fiber tensile tests were performed and correlations have been determined between the geometry and the tensile strength of the fibers. The flexural properties of the solid and the hollow fibers have been determined with deflection tests. The hollow glass fibers showed higher tensile strength and flexural rigidity than the solid glass fibers in the case of similar outer diameter. The hollow fibers were filled with the help of capillary effect, and the filling process was examined as a function of the viscosity and the contact angle between glass and fluids. Relationship has been detected between fiber filling speed and the inner diameter of the fibers, and the filling speed was increased by the lower viscosity and contact angle.

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“…Flat ribbon like morphologies has been observed for different polymers (e.g., cellulose acetate [24], nylon 11 [25], chitosan/polylactide blends [26], polyvinyl alcohol [27]), with different causes being established for such appearance. For example, a rapid vaporization of the solvent within the electrospinning jet may lead to the formation of a skin layer which later collapses [23,24].…”

Section: Preparation Of Electrospun Nanofibers Of Poly(glc-5-glc 6) Amentioning

confidence: 99%

“…For example, a rapid vaporization of the solvent within the electrospinning jet may lead to the formation of a skin layer which later collapses [23,24]. It has also been postulated that the fiber morphology may depend on the flow rate and specifically flat ribbons seem to be favoured at rates so high that the thin fiber walls become unable to support the increasing fiber diameter and collapse to form the flat ribbons [25].…”

Section: Preparation Of Electrospun Nanofibers Of Poly(glc-5-glc 6) Amentioning

confidence: 99%

Electrospun Scaffolds from Low Molecular Weight Poly(ester amide)s Based on Glycolic Acid, Adipic Acid and Odd or Even Diamines

Murase

Valle

Puiggalı́

2015

Fibers

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Electrospinning of regular poly(ester amide)s (PEAs) constituted by glycolic acid, adipic acid and diamines with five and six carbon atoms has been carried out. Selected PEAs were constituted by natural origin products and could be easily prepared by a polycondensation method that avoids tedious protection and deprotection steps usually required for obtaining polymers with a regular sequence. Nevertheless, the synthesis had some limitations that mainly concerned the final low/moderate molecular weight that could be attained. Therefore, it was considered interesting to evaluate if electrospun scaffolds could still be prepared taking also advantage of the capability of PEAs to establish intermolecular hydrogen bonds. Results indicated that the crucial factor was the control of polymer concentration in the electrospun solution, being necessary that this concentration was higher than 40% (w/v). The PEA with the lowest molecular weight (Mw close to 8000 g/mol) was the most appropriate to obtain electrospun samples with a circular cross-section since higher molecular sized polymers show solvent retention problems derived from the high viscosity of the electrospun solution that rendered ribbon-like morphologies after the impact of fibers into the collector. The studied PEAs were semicrystalline and biodegradable, as demonstrated by calorimetric and degradation studies. Furthermore, the new scaffolds were able to encapsulate drugs with anti-inflammatory and bacteriostatic activities like ketoprofen. The corresponding release and bactericide activity was evaluated in different media and against different bacteria. Finally, biocompatibility was demonstrated using both fibroblast and epithelial cell lines. OPEN ACCESSFibers 2015, 3 152

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Preparation and characterization of electrospun fibers of Nylon 11

Cited by 55 publications

References 32 publications

Fabrication of electrospun polyacrylonitrile ion-exchange membranes for application in lysozyme adsorption

Fabrication of electrospun polyacrylonitrile ion-exchange membranes for application in lysozyme adsorption

A comparative analysis of hollow and solid glass fibers

Electrospun Scaffolds from Low Molecular Weight Poly(ester amide)s Based on Glycolic Acid, Adipic Acid and Odd or Even Diamines

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