Melt electrospinning : a green method to produce superfine fibers. / Yong Liu [and three others].

Format:

Book

Author/Creator:

Liu, Yong, author.

Language:

English

Subjects (All):

Electrospinning.

Physical Description:

1 online resource

Place of Publication:

London, England : Elsevier, [2019]

Summary:

Melt Electrospinning: A Green Method to Produce Superfine Fibers introduces the latest results from a leading research group in this area, exploring the structure, equipment polymer properties and spinning conditions of melt electrospinning. Sections introduce the invention of melt electrospinning, including the independent development of centrifugal melt electrospinning and upward melt electrospinning, discuss electro magnetization of melt and the testing method of fiber performance by means of different polymers and self-designed devices, cover simulation, and introduce principle methods and improvement measures of centrifugal melt electrospinning.- Presents melt electrospinning, a green nanofiber fabrication technology- Introduces the invention of melt electrospinning, including centrifugal melt electrospinning and upward melt electrospinning- Describes optimization techniques, electro magnetization of melt, testing methods, DPD simulation and improvement methods- Provides a useful introduction to contemporary electrospinning research with a view to its many potential applications

Contents:

Front Cover

Melt Electrospinning

Copyright

Contents

About the authors

Preface

Acknowledgments

1 - Development of melt electrospinning: the past, present, and future

1.1 Electrospinning

1.2 The working principle of electrospinning

1.3 Types of electrospinning

1.4 Solution electrospinning

1.5 Melt electrospinning

1.6 The scope of this book

References

2 - The device of melt electrospinning

2.1 Introduction

2.2 Conventional melt electrospinning devices

2.3 Laser heating melt electrospinning devices

2.4 Screw extrusion melting electrostatic spinning devices

2.5 Electromagnetic spinning devices for vibration

2.6 Air melt electrospinning devices

2.7 Coaxial melt electrospinning devices

2.8 Upward melt electrospinning devices

2.9 Centrifugal melt electrospinning devices

2.10 Conclusion

3 - Formation of fibrous structure and influential factors in melt electrospinning

3.1 Polycaprolactone

3.1.1 Experiment

3.1.2 Results and discussion

3.2 Polylactic acid (PLA)

3.2.1 The diameter of PLLA fiber under a pulsed electric field

3.2.1.1 Characterization and measurement

3.2.1.2 Results and discussion

3.2.2 Thermal degradation of PLA fiber

3.2.2.1 Materials

3.2.2.2 Equipment

3.2.2.3 Preparation of PLA fibers

3.2.2.4 Characterization

3.2.2.5 Methods in alleviating the problematic degradation of PLA spun fibers

3.2.2.6 Effect of additives on degradation of PLA

3.2.2.7 Session conclusion

3.2.3 The relative molecular mass of PLA fibers

3.2.4 Orientation and crystallinity of the PLA fiber

3.2.4.1 In the electrostatic field

3.2.4.1.1 Materials and methods

3.2.4.1.2 Results and discussion

3.2.4.1.3 Session conclusion

3.2.4.2 Effects of pulsed electric field.

3.2.4.2.1 Crystallization behavior

3.2.4.2.2 Crystalline structure

3.2.4.2.3 Molecular orientation

3.2.4.2.4 Session conclusion

3.3 Phenolic resin

3.3.1 Materials and equipment

3.3.2 Orthogonal experimental arrangements

3.3.2.1 Testing and characterization

3.3.3 Optimal spinning conditions

3.3.4 Fiber heat resistance and crystallinity

3.3.5 Session conclusion

3.4 Polypropylene (PP)

3.4.1 Equipment

3.4.2 Effect of collecting plate on spinning electric field

3.4.3 Effect of upper plate on spinning electric field

3.4.4 Effect of the hyperbranched polymers

3.4.4.1 Sample preparation

3.4.4.2 Result and discussion

3.4.4.2.1 Effect of hyperbranched polyester content on melt electrospinning fiber

3.4.5 Effect of polar additive on PP

3.4.5.1 Material

3.4.5.2 Effect of polar additive on electrospinning current

3.4.5.3 Effect of polar additives on fiber diameter

3.5 Conclusion

Further reading

4 - Melt electrospinning in a parallel electric field

4.1 Introduction

4.2 Method and experiments

4.2.1 Experimental material

4.2.2 Parallel electrospinning equipment

4.2.3 Finite element modeling

4.2.4 Theoretical analysis

4.3 Results and discussion

4.3.1 Experimental electrospinning in a parallel electric field

4.3.2 Finite element simulation of the electrospinning process in a parallel electric field

4.3.2.1 Changes in the parallel electric field with the diameter of the upper disk

4.3.2.2 Changes in the parallel electric field with the distance between two parallel disks

4.3.2.3 Changes in the electric field with the diameters of the two parallel disks

4.4 Conclusion

5 - Dissipative particle dynamics simulation on melt electrospinning

5.1 Introduction

5.1.1 The models and parameters.

5.2 Differential scanning calorimetry simulation under different electric fields

5.2.1 Electrostatic field

5.2.1.1 Simulation of dropping trace in melt electrospinning

5.2.1.2 The relationship between electrostatic force and dropping velocity of the fiber

5.2.1.3 Variations in temperature lead to changes in the fiber structure

5.2.1.4 Chain length during the dropping period

5.2.2 Pulsed electric field

5.2.2.1 Molecular stretching under pulsed electric field with different cycles

5.2.2.2 Effect of pulse width on molecular stretching

5.2.2.3 Jet diameter in a pulsed electric field

5.2.2.4 Effects of the cycle on the jet diameter

5.2.2.5 Effect of the pulse width of the square wave on the jet diameter

5.2.2.6 Duty cycle effect on melt electrospinning of PLA fibers

5.3 Conclusion

6 - Experimental study on centrifugal melt electrospinning

6.1 Overview of centrifugal melt electrospinning

6.2 Research progress of centrifugal melt electrospinning at home and abroad

6.3 The significance of centrifugal melt electrospinning devices

6.4 Experimental study on centrifugal melt electrospinning

6.4.1 Experimental section

6.4.2 Characterization method

6.4.3 Results and discussion

6.4.3.1 Effect of voltage, temperature, and speed on PLLA fiber production

6.4.3.2 Effect of voltage, temperature, and speed on the fiber diameter of PLLA

6.4.3.3 Effect of voltage, temperature, and speed on the crystallinity of PLLA fibers

6.4.3.4 Effect of voltage, temperature, and speed on the morphology of PLLA fibers

6.5 Innovative design of centrifugal melt electrospinning devices

6.6 Conclusion

7 - Dissipative particle dynamics simulations of centrifugal melt electrospinning

7.1 Introduction.

7.2 The dissipative particle dynamics model in centrifugal melt electrospinning

7.3 Different electric field simulation of centrifugal melt electrospinning

7.3.1 Centrifugal melt electrospinning in an electrostatic field

7.3.1.1 Effect of electrospinning parameters on jets

7.3.1.2 Effect of electrospinning parameters on molecular chain untangling

7.3.2 Centrifugal melt electrospinning in a pulsed electric field

7.3.2.1 Effects of duty ratio on jet

7.3.2.2 Effects of frequency on jet

7.4 Conclusion

8 - Three-dimensional (3D) printing based on controlled melt electrospinning in polymeric biomedical materials

8.1 Introduction

8.2 Basic principles of 3D printing based on electrospinning

8.3 Different auxiliary electrode and dielectric plate collectors

8.3.1 Setup for electrospinning with an electrostatic lens system

8.3.1.1 A core-shell nozzle

8.3.1.2 A pole nozzle

8.3.1.3 Other auxiliary electric fields and nozzles

8.3.2 Dielectric plate with sharp-pin electrode

8.4 Patterned, tubular, and porous nanofiber

8.5 Conclusion

9 - Fiber membranes obtained by melt electrospinning for drug delivery

9.1 Introduction

9.2 Experimental

9.2.1 Materials

9.2.2 Processing of the blends

9.2.3 Melt electrospinning

9.2.3.1 Characterization

9.3 Results and discussion

9.3.1 Fiber membrane morphology

9.3.2 Fourier transformed infrared spectroscopy

9.3.3 Differential scanning calorimetry

9.3.4 X-ray diffraction

9.3.5 Electron spin-resonance probe spectroscopy of polylactic acid (PLA)/polyhydroxybutyrate (PHB) electrospun mats

9.3.6 Impact of diffusion upon controlled drug release

9.4 Conclusion

Index

Back Cover.

Notes:

Description based on print version record.

ISBN:

9780128165973

0128165979

OCLC:

1112422721