Summary Brief Information on Nanofibers Electro Hydrodynamic - - PowerPoint PPT Presentation

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Summary Brief Information on Nanofibers Electro Hydrodynamic - - PowerPoint PPT Presentation

Summary Brief Information on Nanofibers Electro Hydrodynamic Atomization (EHDA) Processes: Electrospinning and Electrospraying Research Statistics Nanofibers in Biomedical Field Market Analysis For Nanofibers In Biomedical Field


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Summary

  • Brief Information on Nanofibers
  • Electro Hydrodynamic Atomization (EHDA) Processes: Electrospinning and

Electrospraying

  • Research Statistics
  • Nanofibers in Biomedical Field
  • Market Analysis For Nanofibers In Biomedical Field
  • A new Approach: Hybrid Electrospinning Technology
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Electrospun Nanofibers

Fiber diameter less than 1 µm is mostly defined as nanofiber.

Human Hair Nanofibers

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Advantages Of Nanofibers

High Surface Area (1-1000 m²/g) High Porosity (ca. 80%) Flexibility Small diameters (10 nm-200 nm)

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Applications Of Nanofibers

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Electro Hydrodynamic Atomization (EHDA)

Electrohydrodynamic atomization phenomena is used for building micro- or nanometer architectures, such as fibers and encapsulated particles with a controllable microstructure. Electrohydrodynamic atomization techniques:

1. Electrospraying 2. Electrospinning.

Wu, Y., & Clark, R. L. (2008).

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Electrospray/Electrospraying

The liquid flowing out of a capillary nozzle, which is maintained at high electric potential, is forced by the electric field to be dispersed into fine droplets.

Steps of micro- and nanoparticle production via electrospraying. Schematics of setup for electrospraying

(Wu Y (2014)) (Jaworek, A., & Sobczyk, A. T. (2008))

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Electrospinning

Electrospinning is a fiber production method which uses electric force to draw charged threads of polymer solutions or polymer melts up to fiber diameters in the order of some hundred nanometers.

Morota, K and others (2004)

A basic electrospinning system mainly consists of three parts;

  • polymer feeding unit,
  • high voltage power supply
  • collector
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Electrospinning vs Electrospraying

The difference between the electrospinning and electrospraying techniques lies in the chain entanglement density of the polymer solution.

Surface SEM images of electrospun thin films from polymer solution with various concentrations at 4.5 kV: (a) 5, (b) 10, (c) 20, (d) 30, (e) 40, (f) 50, (g) 60, and (h) 70 g/L. Morota, K and others (2004) (URL-1 Electrospinning Cost Action MP1206)

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Research Interest in Nanofibers

Data is generated on SCOPUS database Keywords: electrospinning OR nanofibers OR electrospun OR nanofiber Searched In: TITLE-ABSTRACT-KEYWORDS

33 50 71 153 266 388 709 1067 1493 1835 2400 2820 3181 3975 4300 4913 5733 6019 6325 7002 7573

1000 2000 3000 4000 5000 6000 7000 8000 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

PAPERS PUBLISHED YEARS Data Generation Date: 07 October 2019

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Data was taken from ESPACENET Worldwide by Searching «nanofiber or electrospinning» in «Title or Abstract» for 2001 to now.

Number Of Patents By Year

17 57 71 121 160 258 324 419 476 617 644 821 1010 1079 1323 1472 1749 2074 500 1000 1500 2000 2500 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

PATENTS YEARS Data Generation Date: 07 October 2019

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Nanofibers in Filtration

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Nanofibers applications in tissue engineering

  • Bone tissue regeneration
  • Cartilage tissue regeneration
  • Muscle tissue regeneration
  • Tendon/ligament tissue regeneration
  • Nerve tissue regeneration
  • Heart valve tissue regeneration
  • Dental regeneration
  • Skin tissue regeneration
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Drug Delivery Applications

  • Controlled release,
  • Slow delivery,
  • Targeted delivery

are the benchmarks for designing efficient drug delivery carriers

Factors to be considered for designing efficient drug delivery systems.

Ramakrishna, S. (2017).

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Advantages of nanofibers as drug delivery systems

For drug delivery applications, electrospinning is the most actively employed method for fabricating drug-loaded nanofibers, due to;

  • its high loading capacity,
  • high encapsulation efficiency,
  • simultaneous delivery of diverse

therapies,

  • ease of operation,
  • cost effectiveness

(Zamani et. al., 2013)

The main mechanism of the drug release from nanofibre matrices is;

  • desorption from the nanofibre surface,
  • diffusion through the channels and pores of

nanofibres or matrix degradation

  • a combination of them.
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Nanofibers for Wound Healing Applications

Correia, I. J. (2018). Representation of the properties that electrospun membranes must display to be used as wound dressings.

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Vascular Tissue Engineering

Nanofibrous tubular vascular scaffold produced using Inovenso NS24

The use of electrospun nanofibers for arterial tissue engineered vascular graft fabrication is common and attractive because it provides;

  • ease of construction,
  • biocompatibility,
  • favorable cellular interactions,
  • adequate mechanical properties such as high

durability and compliance.

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Market Size of Nanofiber Based Biomedical Materials

The global nanofiber materials market for the biomedical industry was valued at $79.82 million in 2016 and is estimated to reach $227.45 million by 2021, growing at a CAGR of 23.3%.

79.82 97.44 119.71 147.62 182.54 227.45

22.07 22.86 23.31 23.66 24.6

20 25 30 35 50 100 150 200 250 2016 2017 2018 2019 2020 2021

Growth Rate (%) Market Size (USD millions)

Market Size Growth Rate

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Global Market For Biomedical Industry By Application 2016 and 2021 ($ millions)

TYPE 2016 2021 Filters and membranes 35,12 106,26 Medical textiles and wound dressings 20,75 60,66 Tissue engineering 12,77 34,2 Drug delivery 6,39 15,57 Others 4,79 10,76

Filters and membranes 44% Medical textiles and wound dressing 26% ue engineering 16% Drug delivery 8% Others 6%

2016

Filters and membranes 47% Medical textiles and wound dressing 26% Tissue engineering 15% Drug delivery 7% Others 5%

2021

Other applications of nanofibers in the biomedical industry include biosensors, dental fixtures, and stem cell therapy

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A New Approach to the Technology: Hybrid Electrospinning

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A new Approach : Hybrid Electrospinning Technology

Conventional needle-based Systems Inovenso’s Hybrid Electrospinning Systems Needleless Electrospinning systems Easy to set-up Easy to set-up Complex set-up procedure All polymers can be used, but fast evaporating solvents can cause needle clogging. Possible to work with all kinds of polymer solutions. No clogging problem. Not possible to work with fast evaporating solvents. Low electrical power. 10 – 30 KV Relatively higher power Up to 50KV Very high electrical power. 80 – 120 KV Uniform jet distribution Uniform and stable jet distribution Non-controllable jet during the

  • peration

Low production rate High production rate High production rate Full control of the process Precise and full control of the process Hard to control the process parameters Defectless Nanofibers Defectless Nanofibers Beaded and defected structures Uniform fiber morphology Uniform morphology Non-uniform morphology

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A new Approach : Hybrid Electrospinning Technology Hybrid Electrospinning Head / Standard Syringe Nanofiber comparison

14G 14G 14G Hybrid Nozzle Hybrid Nozzle Hybrid Nozzle

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Single Hybrid Nozzle

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Multi Hybrid Nozzle

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Inovenso researches, develops, designs and produces high quality electrospinning machines and offer services related to Nanofibers- Based products development and contract manufacturing. Inovenso’s Founders started their researches under structure of Nanofiber Membrane Group of Istanbul Technical University (ITU) in 2005 and commercialized their activities under Inovenso in ITU Technology Development Center in Istanbul, Turkey in 2010. Inovenso US Company is established in Boston/Massachusetts in 2017 both for the US based and Canadian Customers, also for the potential collaborations and projects with academia.

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Strengths

  • More than 10 years experience on

electrospinning technology.

  • Worldwide operation from 2 official
  • ffices in Istanbul, Boston and 5

distributors.

  • Patent owning for the most effective

method of electrospinning, Hybrid Technology.

  • Over 10 succesfuly completed

national and international projects.

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References

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References

Wu, Y., & Clark, R. L. (2008). Electrohydrodynamic atomization: a versatile process for preparing materials for biomedical applications. Journal of Biomaterials Science, Polymer Edition, 19(5), 573– 601 Jaworek, A., & Sobczyk, A. T. (2008). Electrospraying route to nanotechnology: An

  • verview. Journal of Electrostatics, 66(3-4), 197–

219. Wu Y (2014) Electrohydrodynamic Atomization Processing Biologically Nanostructured Materials Bioceram Dev Appl 4:e105. doi:10.4172/2090- 5025.1000e105 Morota, K., Matsumoto, H., Mizukoshi, T., Konosu, Y., Minagawa, M., Tanioka, A., … Inoue, K. (2004). Poly(ethylene

  • xide)

thin films produced by electrospray deposition: morphology control and additive effects

  • f

alcohols

  • n

nanostructure. Journal of Colloid and Interface Science, 279(2), 484–492 Langer, R. & Vacanti, J. Tissue engineering. Science (80-. ). 260, 920–926 (1993). Kenry, C.T. Lim / Progress in Polymer Science 70 (2017) 1–17 Vasita, Rajesh; Graduate Student Dept. of BSBE, IIT Kanpur, Synthesis of artificial tissue: A nanofiber- based biomimetic approach. Kenry, & Lim, C. T. (2017). Nanofiber technology: current status and emerging developments. Progress in Polymer Science, 70, 1–17. Miguel, S. P., Figueira, D. R., Simões, D., Ribeiro, M. P., Coutinho, P., Ferreira, P., & Correia, I. J. (2018). Electrospun polymeric nanofibres as wound dressings: A review. Colloids and Surfaces B: Biointerfaces, 169, 60–71. Dhand, C., Dwivedi, N., Sriram, H., Bairagi, S., Rana, D., Lakshminarayanan, R., … Ramakrishna, S. (2017). Nanofiber composites in drug delivery. Nanofiber Composites for Biomedical Applications, 199–223. Zamani M, Prabhakaran MP, Ramakrishna S Advances in drug delivery via electrospun and electrosprayed nanomaterials Int J Nanomed, 8 (2013), pp. 2997-3017

  • J. Han, R.W. Cao, B. Chen, L. Ye, A.Y. Zhang, J.

Zhang, et al., Electrospinning and biocompatibility evaluation of biodegradable polyurethanes based

  • n L-lysine diisocyanate and L-lysine chain extender,
  • J. Biomed. Mater. Res. A 96A (2011) 705–714.

De Valence S, Tille JC, Mugnai D, Mrowczynski W, Gurny R, Moller M, et al. Long term performance of polycaprolactone vascular grafts in a rat abdominal aorta replacement model. Biomaterials 2012;33:38– 47 Ye, K.; Liu, D.; Kuang, H.; Cai, J.; Chen,W.; Sun, B.; Xia, L.; Fang, B.; Morsi, Y.; Mo, X. Three-dimensiona electrospun nanofibrous scaffolds displaying bone morphogenetic protein-2-derived peptides for promotion of osteogenic differentiation of stem cells and bone regeneration. J. Colloid Interface Sci. 2019, 534, 625–636.

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Thank you!