Effect of polymer molecular weight on the fiber morphology of electrospun mats

Pant, Hem Raj; Nam, Ki-Taek; Oh, Hee-Kyun; Panthi, Gopal; Kim, Hee‐Dong; Kim, Byung-Il; Kim, Hee Young

doi:10.1016/j.jcis.2011.07.094

Cited by 52 publications

(29 citation statements)

References 25 publications

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“…Moreover, thin fibers (true nanofibers) having a diameter less than 50 nm were also observed in all the mats. The formation of these thin fibers in the form of spider‐wave‐like nano‐nets is explained in previous reports . FE‐SEM images (Fig.…”

Section: Resultssupporting

confidence: 69%

Electrospun gelatin/nylon‐6 composite nanofibers for biomedical applications

Pant¹,

Kim²

2012

Polymer International

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We describe the preparation and characterization of gelatin-containing nylon-6 electrospun fibers and their potential use as a bioactive scaffold for tissue engineering. The physicochemical properties of gelatin/nylon-6 composite nanofibers were analyzed using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, TGA and contact angle and tensile measurements. FE-SEM and TEM images revealed that the nanofibers were well oriented and showed a good incorporation of gelatin. FTIR spectroscopy and TGA also revealed that there was good interaction between the two polymers at the molecular level. The adhesion, viability and proliferation properties of osteoblast cells on the gelatin/nylon-6 composite nanofibers were analyzed by an in vitro cell compatibility test. Our results suggest that the incorporation of gelatin can increase the cell compatibility of nylon-6 and therefore the composite mat obtained has great potential in hard tissue engineering.

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Section: Resultssupporting

confidence: 69%

Electrospun gelatin/nylon‐6 composite nanofibers for biomedical applications

Pant¹,

Kim²

2012

Polymer International

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“…In addition, the increase of the hydrophilicity can be explained with the help of the increased surface energy. The increased surface area due to the presence of high-aspect-ratio tree-like nanofibers was responsible for the increase of the surface energy and consequentially increased the hydrophilicity [30]. …”

Section: Resultsmentioning

confidence: 99%

“…Nanofibers with small pore size can be produced by modulating a combination of the solution and processing parameters (e.g., the polymer solution composition and concentration, applied voltage, collector distance and spinning rate) [29,30]. Wang et al [31] prepared PA-66 spider-net nanofiber membranes via regulation of the solution properties and several electrospinning process parameters, and the spider-net nanofiber membrane exhibited small pore size and a better filtration performance.…”

Section: Introductionmentioning

confidence: 99%

A Novel Polyvinylidene Fluoride Tree-Like Nanofiber Membrane for Microfiltration

Kang

Zhao

et al. 2016

Nanomaterials

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A novel polyvinylidene fluoride (PVDF) tree-like nanofiber membrane (PVDF-TLNM) was fabricated by adding tetrabutylammonium chloride (TBAC) into a PVDF spinning solution via one-step electrospinning. The structure of the prepared membranes was characterized by field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR) and pore size analysis, and the hydrophilic property and microfiltration performance were also evaluated. The results showed that the tree-like nanofiber was composed of trunk fibers and branch fibers with diameters of 100–500 nm and 5–100 nm, respectively. The pore size of PVDF-TLNM (0.36 μm) was smaller than that of a common nanofiber membrane (3.52 μm), and the hydrophilic properties of the membranes were improved significantly. The PVDF-TLNM with a thickness of 30 ± 2 μm showed a satisfactory retention ratio of 99.9% against 0.3 μm polystyrene (PS) particles and a high pure water flux of 2.88 × 104 L·m−2·h−1 under the pressure of 25 psi. This study highlights the potential benefits of this novel PVDF tree-like nanofiber membrane in the membrane field, which can achieve high flux rates at low pressure.

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“…For example, Pant et al 72 were able to systematically vary the modulus, ultimate tensile strength and strain to failure by using a formic acid solution to reduce the molecular weight of some of the dissolved Nylon chains by combining it with fresh solutions of Nylon to electrospin micro-nano Nylon fibrous mats. 72 Figure 13 shows the resultant morphology for four permutations. As the concentration of degraded Nylon increases, one notices an increase of smaller diameter fibres present in the micrographs.…”

Section: Polyamide Fibresmentioning

confidence: 99%

Fibre-reinforced hydrogels with high optical transparency

Maranchi

Trexler

Guo

et al. 2014

International Materials Reviews

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Fibre-reinforced hydrogels with high optical transparency are an emerging composite material with great promise to enable new applications, such as a transparent wound dressing with custom tuned mechanical properties that provides desirable mechanical and physical properties along with optical clarity for facile wound inspection. Stand-alone hydrogels are an important class of materials comprising a cross-linked polymer network surrounded by a water matrix. However, their mechanical properties are typically very modest compared with other materials. While significant research is going on in parallel in the fields of hydrogels and reinforcement fibres, researchers are only starting to scratch the surface of the possibilities of combining the two. This report provides a review of natural and synthetic reinforcement fibre research with special emphasis placed on nanofibres. These provide the added benefit of transparency by being much smaller than the wavelength of visible light. A review of hydrogel materials is also presented. The mechanical properties, optical properties and biological functionality of hydrogel systems are also described. Ocular, load-bearing tissue, wound management and sensing/ device applications are all discussed. Transparent fibre-reinforced hydrogels provide a compelling potential solution to enable advanced functionality, in particular in the wound care and optical application areas.

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Effect of polymer molecular weight on the fiber morphology of electrospun mats

Cited by 52 publications

References 25 publications

Electrospun gelatin/nylon‐6 composite nanofibers for biomedical applications

Electrospun gelatin/nylon‐6 composite nanofibers for biomedical applications

A Novel Polyvinylidene Fluoride Tree-Like Nanofiber Membrane for Microfiltration

Fibre-reinforced hydrogels with high optical transparency

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