bench-top nanofiber electrospinning and electrospraying unit - Spingenix

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14
Aug

Numerous scientists have actually found that chitosan

Lots of researchers have found that chitosan is commonly favored in biomedical applications due to its biocompatibility, biodegradability, non-toxicity, potential for cell adhesion and spreading, antimicrobial activity, and its aid in rapid wound recovery. Chitosan can be generated in the kind of powder, gel, foam, film, fiber and also string and also used in many various types in several fields (Tikhonov et al., 2006; Peter, 1996; Rao and also Sharma, 1994; Rinaudo, 2006). It is one of the artificial polymers with physical as well as mechanical homes, biocompatible and also eco-friendly.

Electrospinning nanofibers.

It is normally acquired by ring-opening polymerization of “ε-caprolactam”. It has an extremely variety of uses, particularly in the fabric industry. Electrospinning can be briefly defined as the manufacturing of submicron fineness fibers by the application of electrostatic forces to a polymer option or thaw. This method consists of functional steps such as (i) billing the remedy with electric costs (ii) Taylor coning (iii) thinning down the polymer jet by instability (whiplash instability) in the electrical field (iv) weakening, strengthening and accumulating. The polymer jet is exchanged fibers on the collection device.

Diameter as well as morphology of fibers acquired by electrospinning procedures, option residential or commercial properties (viscosity, conductivity, molecular weight and polymer concentration, surface area stress, kind of solvent), process criteria (electric area strength, range between feeder and also collector, feed amount of remedy) and environmental problems (temperature level, moisture) (Chong et al., 2007; Lee et al., 2004). It can be seen that the academic and also industry interest in the electrospinning method has actually enhanced over the last few years as it allows the use of reliable and also simple nanofibers. Production of natural as well as artificial polymers

Nanofiber-based structures are thought about as prospective materials, due to their high surface-to-volume proportion, high porosity, and extremely little pore dimension (Li and Xia, 2004) As the surface area stress raises greatly, electrostatic destination is said to create different issues. To conquer this trouble, smooth nanofibers can be gotten by blending numerous polymers.

The chitosan (CS) generated at 2% by weight was liquified homogeneously in 90% stamina acetic acid with stirring for 24 h at room temperature level. For 7 hrs, homogeneous remedy, electrogravity examinations were executed. The solutions were mixed using a magnetic stirrer (Stuart, SB 162) for two hrs at room temperature level. The pH of the ready options was determined making use of indication cards (indication strips, Merck) as well as their viscosity values. Their conductivity was identified making use of a Brookfield viscometer (DV-E viscometer). It was measured with a WTW brand tool (Cond 3110). A spindle of the kind S21 with a turning of 30 rpm was used for viscometer dimensions.

The electrospinning procedure was carried out using a laboratory device (NanoFMG, NS24) designed on the principle of upright job. Each solution was moved to syringes with a volume of 10 ml as well as introduced right into an aluminum foil-covered cylindrical manifold making use of a 20-gauge delivery unit (nozzle), and the quantity of the feed options was gauged in an electrical field of 0.50 ml/hour absolutely. As well as the range was adapted to 15 cm. A voltage of 34 kV was used in electrogravity experiments. Alternating present (A/C) was used to create the electrical area. The experiments were carried out at a loved one moisture of 35-42% as well as at variable temperatures in between 26-31 levels Celsius.

The polycationic nature of chitosan as well as the strong intramolecular and also intermolecular communications in its chemical structure produce substantial issues in the electrospinning process. Solid hydrogen bonds avoid the cost-free motion of polymer chain obstructs in the electric field as well as bring about nozzle splitting during the electrospinning process [Li as well as Hsieh, 2006; Desai as well as Keith, 2008). On top of that, the undesirable pressures between the ionic teams in the polymer chain sufficiently avoid complication (complication) of the polymer chains. This prevents the development of continuous and adequate fibers during extending, flexing and also influence instability of the polymer jet. These troubles cause the development of beads or irregular handmade fibers during the elongation of the polymer stream instead of the formation of regular fibers as a result of the electrospinning procedure.

Electrospinning can be briefly specified as the production of submicron fineness fibers by the application of electrostatic forces to a polymer remedy or melt. The polymer jet is transformed right into fibers on the collection mechanism.

Diameter and morphology of fibers acquired by electrospinning procedures, remedy residential or commercial properties (thickness, conductivity, molecular weight and polymer concentration, surface area tension, kind of solvent), procedure parameters (electrical field toughness, distance between feeder and also collector, feed amount of option) as well as ecological conditions (temperature, moisture) (Chong et al., 2007; Lee et al., 2004). In addition, the undesirable pressures between the ionic teams in the polymer chain completely protect against entanglement (complication) of the polymer chains. These problems result in the development of beads or uneven handmade fibers during the elongation of the polymer stream rather than the development of regular fibers as an outcome of the electrospinning procedure.

14
Aug

Electrospinning and Electrospraying

Electrospinning and Electrospraying. As part of the spring semester seminars of the academic year 2017-2018, Spingenix University Faculty of Engineering, Faculty of Engineering, Lecturer, Department of R&D Engineering Res. See. Dr. Ali Okyay held a seminar entitled “Electrospray method and its use in food”.

electrospraying and electrospinning

The electrospray method, in its most general definition, is the process of breaking up a liquid into small charged droplets by applying an electric potential to the liquid through which a capillary passes. The size of the droplets obtained in this system can be affected by the conditions of electrospraying as well as the properties of the supplied liquid.

bench-top nanofiber electrospinning and electrospraying unit

Electrospray is a one-step material processing technology with low energy consumption and low cost. In addition, single micro- or nano-dispersed droplets can be produced.

difference between electrospinning and electrospraying

This method is based on the paint industry and is used to reduce solvent consumption, reduce waste generation, increase transfer efficiency to the coated surface and achieve a smooth and repeatable coating.

 

electrospinning and electrospraying processes

In addition to the paint industry, it is used in the pharmaceutical industry to encapsulate the active ingredients of drugs, in the coating of drugs, in the automotive industry, in spraying crops in the field, and as a propellant in space vehicles.

electrospinning and electrospraying with a negative voltage source

In addition, nanoelectrospray can be used in mass spectrometric analysis of biomolecules. This method has gained importance in the food industry in recent years.

The electrospray system is used in the food industry to use flavoring for cooking fish and meat fillets.

electrospraying and electrospinning applications

In recent years, electrospray has been used in the production of edible food coatings. In the framework of the seminar, the use of the electrospray method in food and the benefits of this method were explained in detail, and the experimental results regarding the use of electrospray in the production of edible food coatings were shared.

electrospraying and electrospinning of chocolate suspensions

It can also be used to coat foods with oils, emulsifiers and flavorings. The electrospray method is also used to cover the polishing materials on confectionery and chocolate products.  Pointing out that the electrospray system is used as a flavoring to dry fish and meat fillets in the food industry, Ali Okyaei said, “It can also be used to coat food with oil, emulsifier and flavoring. The Electrospray process is also used to coat the polishing materials on confectionery and chocolate products. In recent years, the electrospray process has been shown to be used in the manufacture of edible food coatings.

New nanotechnologies being developed around the world are revealing wondrous results in many areas that are turning the traditional laws of physics and chemistry upside down. While there is only one company in the world that manufactures nanofibers, Ali Okeyi, who started his activity in this field, is among the companies whose number has reached 13 within 2 years, while Nanotel, which he founded, not only manufactures nanofibers. but also the construction of an electric spinning device that produces nanofibers. Looking for another address, as this opportunity is not recognized early in the food, cosmetics and pharmaceutical industries, Nanotel focuses on nanofibers with fewer molecules, lightweight and durable airplane wings and filters for sterile hospital air conditions.

electrospray and electrospinning

For example, nanofibers in textiles can be used to produce flame-retardant or waterproof fabrics. Air and water filters that impregnate particles with pollutants and clean them microbiologically… In medicine, wound closure and bone formation or transthermal drugs whose active ingredients enter the body through the skin… cosmetic face masks… encapsulated vitamins and antioxidants to enrich Food … less and longer shelf life food with more natural additives or smart packaging that alerts the consumer to the condition of the food inside

This is not the main goal of Nanotel, an academic company, although they have managed to create their own brand of electrospinning machine, which, by applying high voltage, obtains the solution in the form of conventional nanofiber structures. Nanotel’s commercial goal is to manufacture nanofibers for industries such as food, medicine and cosmetics. “There is an overseas nanotechnology market that is growing rapidly and making big leaps and leaps over the years. This also includes nanofibers. I think Turkey should definitely have an economic stake in it. When I first applied to the TÜBİTAK 1512 program to start a business that would produce commercial nanofibers like mine, there was only one in the world in New Zealand. Today, 13 companies worldwide, including us, can produce nanofibers. That means it went from 1 to 13 within 1.5 years. “It’s amazing,” said Yard, the founder of Nanotel. Ali Okyay says there is another company in Turkey that advertises that it makes nanofibers and is working on filters, but she doesn’t know if it produces electrospinning.