Poly(acrylic acid) nanofibers by electrospinning

Kim, Bumsu; Park, Hyun; Lee, Sung-Hwan; Sigmund, Wolfgang M.

doi:10.1016/j.matlet.2004.11.032

Cited by 134 publications

(58 citation statements)

References 8 publications

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“…This effectively creates a water cloud surrounding the sodium HA chains, including the carboxyl groups, which are saturated by sodium ions. The sodium chloride seems to be having a larger effect on the conductivity of the polyelectrolyte similar to the effects observed with a synthetic polyelectrolyte, polyacrylic acid [27].…”

Section: Ha Solution Conductivity and Fiber Morphologysupporting

confidence: 56%

Phosphate salts facilitate the electrospinning of hyaluronic acid fiber mats

et al. 2013

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Electrospinning is a cost effective and facile method to manufacture fiber mats appropriate for biomedical applications. Due to its high molecular weight and charged backbone, hyaluronic acid (HA) fiber mats with consistent fiber morphology have been difficult to electrospin from neutral pH solutions. Here, we present that the electrospinning of HA fibers in aqueous dimethylformamide solutions is facilitated by the addition of three phosphate salts. The salts-glycerol phosphate (GP), sodium phosphate (SP), and tripolyphosphate (TPP)-facilitated electrospinning of the solutions as characterized by conductivity measurements and fiber morphology. From tensile experiments, HA mats electrospun with SP demonstrated improved Young's modulus (12 MPa) over HA mats spun with either GP or TPP (5 and 3 MPa, respectively). This work demonstrates that a new neutral solvent system can be employed to spin HA fibers, which offers the potential for using the fibers for biomedical applications, such as a bone biomimetic.

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Section: Ha Solution Conductivity and Fiber Morphologysupporting

confidence: 56%

Phosphate salts facilitate the electrospinning of hyaluronic acid fiber mats

et al. 2013

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“…7a (Huang et al 2003). This was reported with a wide range of polymers which include natural polymers such as collagen, dextran and gelatin as well as synthetic polymers such as poly(DL-lactic acid) (PDLA), PEO, PLGA, PLLA, poly(methyl methacrylate) (PMMA) and PS (Deitzel et al 2001;Fong et al 1999;Gupta et al 2005;Huang et al 2001;Jarusuwannapoom et al 2005b;Jiang et al 2004;Ki et al 2005;Kim et al 2005a, b;Koski et al 2004;Son et al 2004;Zhang et al 2005;Zong et al 2002). For instance, the beads disappeared completely in polycaprolactone (PCL) nanofibers upon increasing the PCL solution concentration from 5 to 9 % with keeping all of the other variables constant (Fig.…”

Section: Polymer Concentration (Solution Viscosity)mentioning

confidence: 95%

“…It was observed that addition of salts to various polymer solutions like collagen type I-PEO, PEO, PDLA, polyamide-6, and poly(acrylic acid) (PAA) led to increasing the solution conductivity and consequently formation of more uniform nanofibers (Fong et al 1999;Huang et al 2001;Kim et al 2005a, b;Mit-uppatham et al 2004;Zong et al 2002). In another study, PLLA solution conductivity was increased by addition of pyridium formiate which showed a considerable reduction in the amount of the beads within the produced nanofibers.…”

Section: (B) Addition Of Saltsmentioning

confidence: 98%

Eco-friendly Electrospun Polymeric Nanofibers-Based Nanocomposites for Wound Healing and Tissue Engineering

El‐Sherbiny¹,

Ali²

2015

Advanced Structured Materials

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Recently, nanofibers have been investigated with remarkable increased applicability in different fields due to their numerous advantages such as large surface area and controlled morphology. Nanofibers can be prepared using three main techniques, namely electrospinning, phase separation, and self-assembly. Of these, electrospinning is the most commonly used technique and also seems to exhibit the most desirable results. This chapter provides an overview of the electrospinning of eco-friendly polymers and polymeric nanocomposites for biomedical applications with an emphasis on their applications in wound healing and tissue regenration. Controlling the characteristics of the developed electrospun nanocomposites via tailoring the collectors used during electrospinning as well as carefully changing their surface chemistry for the proper design of wound healing nanofibrous dressings and tissue engineering nanofibrous scaffolds will be explored. Also, the challenges associated with the use of electrospun polymeric nanofibers-based nanocomposites for wound healing and tissue engineering will be described.

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“…Despite all the advancement in supported metal nanocatalyst preparation [41], there is still great interest in developing catalyst supports with high stability and large surface area. At this concern, electrospinning has been considered as one of the powerful methods to generate nanofibrous support materials with a huge specific surface area [42][43][44][45]. Recent studies have already shown that electrospun polymeric nanofibers act as efficient support material in the stabilization of Fe(0) [46], Au(0) [47], Pd(0) [48], Pt(0) [49] and Ag(0) [50] nanoparticles for environmental remediation applications [46][47][48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

Nickel nanoparticles decorated on electrospun polycaprolactone/chitosan nanofibers as flexible, highly active and reusable nanocatalyst in the reduction of nitrophenols under mild conditions

Karakaş

Çelebioğlu

Çelebı

et al. 2017

Applied Catalysis B: Environmental

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a b s t r a c tToday, the reduction of nitro aromatics stands a major challenge because of the pollutant and detrimental nature of these compounds. In the present study, we show that nickel(0) nanoparticles (Ni-NP) decorated on electrospun polymeric (polycaprolactone(PCL)/chitosan) nanofibers (Ni-NP/ENF) effectively catalyze the reduction of various nitrophenols (2-nitrophenol, 2,4-dinitrophenol, 2,4,6-trinitrophenol) under mild conditions. Ni-NP/ENF nanocatalyst was reproducibly prepared by deposition-reduction technique. The detailed characterization of these Ni-NP/ENF based nanocatalyst have been performed by using various spectroscopic tools including ICP-OES, P-XRD, XPS, SEM, BFTEM, HRTEM and BFTEM-EDX techniques. The results revealed the formation of well-dispersed nickel(0) NP (d mean = 2.71-2.93 nm) on the surface of electrospun polymeric nanofibers. The catalytic activity of the resulting Ni-NP/ENF was evaluated in the catalytic reduction of nitrophenols in aqueous solution in the presence of sodium borohydride (NaBH 4 ) as reducing agent, in which Ni-NP/ENF nanocatalyst has shown high activity (TOF = 46.2 mol 2-nitrophenol/mol Ni min; 48.2 mol 2,4-dinitrophenol/mol Ni min; 65.6 mol 2,4,6-trinitrophenol/mol Ni min). More importantly, due to the nanofibrous polymeric support, Ni-NP/ENF has shown a flexible characteristics along with reusability property. Testing the catalytic stability of Ni-NP/ENF revealed that this new catalytic material provides high reusability performance (at 3rd reuse 86% for 2-nitrophenol, 83% 2,4-dinitrophenol and 82% 2,4,6-trinitrophenol) for the reduction of nitrophenols even at room temperature and under air. The present study reported here also includes the compilation of wealthy kinetic data for Ni-NP/ENF catalyzed the reduction of nitrophenols in aqueous sodium borohydride solution depending on temperature and type of support material (Al 2 O 3 , C, SiO 2 ) to understand the effect of the support material and determine the activation parameters.

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Poly(acrylic acid) nanofibers by electrospinning

Cited by 134 publications

References 8 publications

Phosphate salts facilitate the electrospinning of hyaluronic acid fiber mats

Phosphate salts facilitate the electrospinning of hyaluronic acid fiber mats

Eco-friendly Electrospun Polymeric Nanofibers-Based Nanocomposites for Wound Healing and Tissue Engineering

Nickel nanoparticles decorated on electrospun polycaprolactone/chitosan nanofibers as flexible, highly active and reusable nanocatalyst in the reduction of nitrophenols under mild conditions

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