Electrospinning is one of the most extensively used technique in the early 21st century, due to i... more Electrospinning is one of the most extensively used technique in the early 21st century, due to its adaptability and potential for applications in various domains. Electrospun nanofibers are used in many fields, for example nanoelectronics, optical devices, protective clothing, sound absorption, nano membranes and many biomedical applications. This review paper provides a summary of the electrospinning process, polymer solution and work parameters that influence the nanofibers manufacture, focusing on subjects related to electrospun nanofibers that are used for medical applications such as: wound healing, artificial skin, selective separation, immobilization of active agents and molecules, scaffold for tissue engineering, nervous system and bone tissue engineering, drug delivery. New groups of polymer materials and new generations of composite and nanostructural materials and their new applicability in the medical field are reviewed. The paper ends with perspectives and future direc...
The very adaptable performance of electrospun nanofibers is the result of the choice of the natur... more The very adaptable performance of electrospun nanofibers is the result of the choice of the natural or synthetic polymer/polymer blend, work environmentand process parameters, which allows the appropriate control of morphology and properties of the products. To offer an ample update on progress in the field, this review provides an overview of the modification or functionalization of nanofibers for biomedical applications, intended to engineer precise features that will enhance their end use performance. Diverse concepts, such as single electrospinning, co-electrospinning, coaxial electrospinning or miniemulsion electrospinning, and technological factors that can influence the capability to incorporate biological agents with diverse features and to modify the release conduct are studied. The many bioactive molecules that can be integrated into nanofibers via diverse approaches are revised, including bactericide agents, various drugs, proteins and enzymes.Future trends of nanofiber f...
IOP Conference Series: Materials Science and Engineering, 2016
The most important applications of electrospun polymeric nanofibers are by far those from biomedi... more The most important applications of electrospun polymeric nanofibers are by far those from biomedical field. From the biological point of view, almost all the human tissues and organs consist of nanofibroas structures. The examples include the bone, dentine, cartilage, tendons and skin. All these are characterized through different fibrous structures, hierarchically organized at nanometer scale. Electrospinning represents one of the nanotechnologies that permit to obtain such structures for cell cultures, besides other technologies, such as selfassembling and phase separation technologies. The basic materials used to produce electrospun nanofibers can be natural or synthetic, having polymeric, ceramic or composite nature. These materials are selected depending of the nature and structure of the tissue meant to be regenerated, namely: for the regeneration of smooth tissues regeneration one needs to process through electrospinning polymeric basic materials, while in order to obtain the supports for the regeneration of hard tissues one must mainly use ceramic materials or composite structures that permit imbedding the bioactive substances in distinctive zones of the matrix. This work presents recent studies concerning basic materials used to obtain electrospun polymeric nanofibers, and real possibilities to produce and implement these nanofibers in medical bioengineering applications.
Functional Electrical Stimulation (FES) is a part of the field of electrotherapy. This kind of me... more Functional Electrical Stimulation (FES) is a part of the field of electrotherapy. This kind of medical treatment tries to restore the lost functions of the nervous system by means of electrical stimulation. Neuroprostheses for locomotion require selective stimulation of the fibers in the nerves, which innervate the muscles making the movements. These complex systems are obtained by the integration of the following components: sensors, actuator, energy source, wireless communication system, control system and data processor. FES electrodes embedded in neuroprosthesis for rehabilitation process can be: − miniaturized electrodes BION implanted in hypodermic syringe; − surface electrodes with electro gels that fix them on patient's skin; − non-adhesive electrodes. The main disadvantage of surface electrodes is skin irritations produced by electro gels. Another great disadvantage for patient is that electrodes represent consumable elements with an extremely short life period and a hi...
The European research in the textile domain is oriented towards: a. the nanotechnologies integrat... more The European research in the textile domain is oriented towards: a. the nanotechnologies integration which can ensure the gradual configuration of modernization and restructuring the productive system according to the provisions imposed by the EU integration; b. the inovation by stimulating the activity of technical/technological transfer reserach/project/creation for the purpose of lining up to the ECOTEX European normative standards; c. the application of innovating treatments in the case of finishing/biotechnologies by using methods according to the ECOTEX standards; d. the integration of the nano-fibres obtained by electrospinning start from very performing fitering mediums and membranes towards sensors and driving systems, medical devices and devices for drugs delivery uo to the molecular photonics. The developments in the field of the computerized equipment allow nowdays that during the electrospinning process the automated control of the various system and process parameters ...
VASILICA POPESCU1*, IOAN GABRIEL SANDU2, ECATERINA VASLUIANU1, ION SANDU, LILIANA ROZEMARIE MANEA... more VASILICA POPESCU1*, IOAN GABRIEL SANDU2, ECATERINA VASLUIANU1, ION SANDU, LILIANA ROZEMARIE MANEA 1, CRISTINE CAMPAGNE5,6 1 Gheorghe Asachi Technical University, Faculty of Textiles, Leather Engineering and Industrial Management, 29 Mangeron Blv., TEX 1 Building, 700050, Iasi, Romania 2 Gheorghe Asachi Technical University, Faculty of Material Science and Engineering, 64 Mangeron Blv., 700050, Iasi, Romania 3 Alexandru Ioan Cuza University, ARHEOINVEST Interdisciplinary Platform, 11 Carol I, Corp G demisol, 700506, Iasi, Romania 4 Romanian Inventors Forum, 3 Sf. P.Movila Str., L11, III/3, 700089, Iasi, Romania 5 University Lille Nord de France, F-59000 Lille, France 6 ENSAIT, GEMTEX, F-59100 Roubaix, France
Electrospinning Method Used to Create Functional Nanocomposites Films, Sep 12, 2018
Electrospinning, the most favorable process of obtaining nanofibers, is capable of processing sol... more Electrospinning, the most favorable process of obtaining nanofibers, is capable of processing solution or melt polymers, ceramic materials or metals in many morphological variants, thus providing diverse functionalities. The chapter reviews the main ways in which nanofibers' characteristics can be influenced by solution parameters, process parameters and ambient conditions, afterwards focusing on the role of some of the most significant electrospinning parameters (applied voltage, flow rate, nozzle to collector distance) on the diameter of the nanofibers. Experimental studies to model the influence of process parameters in the case of electrospinning polyetherimide solutions are presented. Response surface methodology and MATLAB simulation software have been used to obtain the mathematical models that indicate the most favorable parameters.
✉ Corresponding author:Iulia Stanescu, [email protected] ReceivedMarch 4, 2015 As wat... more ✉ Corresponding author:Iulia Stanescu, [email protected] ReceivedMarch 4, 2015 As water consumption in the final wash-off of reactive dyeing of cotton is significant, this study tries to identify the steps of the process that can be left out in order to save water. Plackett-Burman screening design was used to identify the factors that influence the reactive dye removal in the rinsing process. The experimental design has eleven factors, where each factor is set at two levels, and 20 trial runs were conductedin the study. The analysis of variance, which was used to examine the results, showed that in the case of the mono-chlorotriazinyl dye all the factors, except the third overflow rinse, last hot soaping and last neutralization baths,have statistical significant impact on the hydrolyzed dye removal, while for the di-chlorotriazinyl dye the insignificant factors were the two neutralization baths. The results would lead to further experimentation for thorough investigation...
LILIANA ROZEMARIE MANEA*, MARIA CHIRITA 1, LILIANA HRISTIAN1, ALEXANDRU POPA3, ION SANDU2,4* 1Ghe... more LILIANA ROZEMARIE MANEA*, MARIA CHIRITA 1, LILIANA HRISTIAN1, ALEXANDRU POPA3, ION SANDU2,4* 1Gheorghe Asachi echnical University Iasi, Faculty of Textile and Leather Engineering and Industrial Management, 29 Dimitrie Mangeron Blvd., 700050, Iasi, Romania 2 Romanian Inventors Forum, 3 Sf. Petru Movila Str., Bl. L11, III/3, 700089, Iasi, Romania 3Aurel Vlaicu Uiversity of Arad, Engineering Faculty, Textile Department, 77l Revoluþiei Blvd., 310130, Arad, Romania 4Alexandru Ioan Cuza University of Iasi, ARHEOINVEST Interdisciplinary Platform, 22 Carol I Blvd., Corp G Dmisol, 700506, Iasi, Romania
LILIANA ROZEMARIE MANEA1,2*, ION SANDU2,3* 1 “Gheorghe Asachi” Technical University Iasi, Faculty... more LILIANA ROZEMARIE MANEA1,2*, ION SANDU2,3* 1 “Gheorghe Asachi” Technical University Iasi, Faculty of Textile and Leather Engineering and Industrial Management, 29 Dimitrie Mangeron Blvd., 700050, Iasi, Romania 2 Romanian Inventors Forum, Str. Sf.P.Movila 3, L11, III/3, 700089, Iasi, Romania 3 "”Alexandru Ioan Cuza” University of Iasi, ARHEOINVEST Interdisciplinary Platform, 11 Carol I Blvd., Corp G demisol, 700506, Iasi, Romania
The wide band dielectric spectroscopy analysis of the 1.5% multi walled carbon nanotube (MWNT) co... more The wide band dielectric spectroscopy analysis of the 1.5% multi walled carbon nanotube (MWNT) contain and 20% polyamide 6 (PA6) nanowebs obtained by three different treatments applied to the MWNTs (chemical, mechanical and mixed) was investigated. A morphological analysis of the samples was carried out using the scanning electron microscopy (SEM) and atomic force microscopy (AFM) principles. The evolution of the dielectric constant (Eps'), imaginary permittivity (Eps"), dissipation factor (Tan δ) and the conductivity modulus were analysed, both from an experimental and a theoretical point of view.
Electrospinning is one of the most extensively used technique in the early 21st century, due to i... more Electrospinning is one of the most extensively used technique in the early 21st century, due to its adaptability and potential for applications in various domains. Electrospun nanofibers are used in many fields, for example nanoelectronics, optical devices, protective clothing, sound absorption, nano membranes and many biomedical applications. This review paper provides a summary of the electrospinning process, polymer solution and work parameters that influence the nanofibers manufacture, focusing on subjects related to electrospun nanofibers that are used for medical applications such as: wound healing, artificial skin, selective separation, immobilization of active agents and molecules, scaffold for tissue engineering, nervous system and bone tissue engineering, drug delivery. New groups of polymer materials and new generations of composite and nanostructural materials and their new applicability in the medical field are reviewed. The paper ends with perspectives and future direc...
The very adaptable performance of electrospun nanofibers is the result of the choice of the natur... more The very adaptable performance of electrospun nanofibers is the result of the choice of the natural or synthetic polymer/polymer blend, work environmentand process parameters, which allows the appropriate control of morphology and properties of the products. To offer an ample update on progress in the field, this review provides an overview of the modification or functionalization of nanofibers for biomedical applications, intended to engineer precise features that will enhance their end use performance. Diverse concepts, such as single electrospinning, co-electrospinning, coaxial electrospinning or miniemulsion electrospinning, and technological factors that can influence the capability to incorporate biological agents with diverse features and to modify the release conduct are studied. The many bioactive molecules that can be integrated into nanofibers via diverse approaches are revised, including bactericide agents, various drugs, proteins and enzymes.Future trends of nanofiber f...
IOP Conference Series: Materials Science and Engineering, 2016
The most important applications of electrospun polymeric nanofibers are by far those from biomedi... more The most important applications of electrospun polymeric nanofibers are by far those from biomedical field. From the biological point of view, almost all the human tissues and organs consist of nanofibroas structures. The examples include the bone, dentine, cartilage, tendons and skin. All these are characterized through different fibrous structures, hierarchically organized at nanometer scale. Electrospinning represents one of the nanotechnologies that permit to obtain such structures for cell cultures, besides other technologies, such as selfassembling and phase separation technologies. The basic materials used to produce electrospun nanofibers can be natural or synthetic, having polymeric, ceramic or composite nature. These materials are selected depending of the nature and structure of the tissue meant to be regenerated, namely: for the regeneration of smooth tissues regeneration one needs to process through electrospinning polymeric basic materials, while in order to obtain the supports for the regeneration of hard tissues one must mainly use ceramic materials or composite structures that permit imbedding the bioactive substances in distinctive zones of the matrix. This work presents recent studies concerning basic materials used to obtain electrospun polymeric nanofibers, and real possibilities to produce and implement these nanofibers in medical bioengineering applications.
Functional Electrical Stimulation (FES) is a part of the field of electrotherapy. This kind of me... more Functional Electrical Stimulation (FES) is a part of the field of electrotherapy. This kind of medical treatment tries to restore the lost functions of the nervous system by means of electrical stimulation. Neuroprostheses for locomotion require selective stimulation of the fibers in the nerves, which innervate the muscles making the movements. These complex systems are obtained by the integration of the following components: sensors, actuator, energy source, wireless communication system, control system and data processor. FES electrodes embedded in neuroprosthesis for rehabilitation process can be: − miniaturized electrodes BION implanted in hypodermic syringe; − surface electrodes with electro gels that fix them on patient's skin; − non-adhesive electrodes. The main disadvantage of surface electrodes is skin irritations produced by electro gels. Another great disadvantage for patient is that electrodes represent consumable elements with an extremely short life period and a hi...
The European research in the textile domain is oriented towards: a. the nanotechnologies integrat... more The European research in the textile domain is oriented towards: a. the nanotechnologies integration which can ensure the gradual configuration of modernization and restructuring the productive system according to the provisions imposed by the EU integration; b. the inovation by stimulating the activity of technical/technological transfer reserach/project/creation for the purpose of lining up to the ECOTEX European normative standards; c. the application of innovating treatments in the case of finishing/biotechnologies by using methods according to the ECOTEX standards; d. the integration of the nano-fibres obtained by electrospinning start from very performing fitering mediums and membranes towards sensors and driving systems, medical devices and devices for drugs delivery uo to the molecular photonics. The developments in the field of the computerized equipment allow nowdays that during the electrospinning process the automated control of the various system and process parameters ...
VASILICA POPESCU1*, IOAN GABRIEL SANDU2, ECATERINA VASLUIANU1, ION SANDU, LILIANA ROZEMARIE MANEA... more VASILICA POPESCU1*, IOAN GABRIEL SANDU2, ECATERINA VASLUIANU1, ION SANDU, LILIANA ROZEMARIE MANEA 1, CRISTINE CAMPAGNE5,6 1 Gheorghe Asachi Technical University, Faculty of Textiles, Leather Engineering and Industrial Management, 29 Mangeron Blv., TEX 1 Building, 700050, Iasi, Romania 2 Gheorghe Asachi Technical University, Faculty of Material Science and Engineering, 64 Mangeron Blv., 700050, Iasi, Romania 3 Alexandru Ioan Cuza University, ARHEOINVEST Interdisciplinary Platform, 11 Carol I, Corp G demisol, 700506, Iasi, Romania 4 Romanian Inventors Forum, 3 Sf. P.Movila Str., L11, III/3, 700089, Iasi, Romania 5 University Lille Nord de France, F-59000 Lille, France 6 ENSAIT, GEMTEX, F-59100 Roubaix, France
Electrospinning Method Used to Create Functional Nanocomposites Films, Sep 12, 2018
Electrospinning, the most favorable process of obtaining nanofibers, is capable of processing sol... more Electrospinning, the most favorable process of obtaining nanofibers, is capable of processing solution or melt polymers, ceramic materials or metals in many morphological variants, thus providing diverse functionalities. The chapter reviews the main ways in which nanofibers' characteristics can be influenced by solution parameters, process parameters and ambient conditions, afterwards focusing on the role of some of the most significant electrospinning parameters (applied voltage, flow rate, nozzle to collector distance) on the diameter of the nanofibers. Experimental studies to model the influence of process parameters in the case of electrospinning polyetherimide solutions are presented. Response surface methodology and MATLAB simulation software have been used to obtain the mathematical models that indicate the most favorable parameters.
✉ Corresponding author:Iulia Stanescu, [email protected] ReceivedMarch 4, 2015 As wat... more ✉ Corresponding author:Iulia Stanescu, [email protected] ReceivedMarch 4, 2015 As water consumption in the final wash-off of reactive dyeing of cotton is significant, this study tries to identify the steps of the process that can be left out in order to save water. Plackett-Burman screening design was used to identify the factors that influence the reactive dye removal in the rinsing process. The experimental design has eleven factors, where each factor is set at two levels, and 20 trial runs were conductedin the study. The analysis of variance, which was used to examine the results, showed that in the case of the mono-chlorotriazinyl dye all the factors, except the third overflow rinse, last hot soaping and last neutralization baths,have statistical significant impact on the hydrolyzed dye removal, while for the di-chlorotriazinyl dye the insignificant factors were the two neutralization baths. The results would lead to further experimentation for thorough investigation...
LILIANA ROZEMARIE MANEA*, MARIA CHIRITA 1, LILIANA HRISTIAN1, ALEXANDRU POPA3, ION SANDU2,4* 1Ghe... more LILIANA ROZEMARIE MANEA*, MARIA CHIRITA 1, LILIANA HRISTIAN1, ALEXANDRU POPA3, ION SANDU2,4* 1Gheorghe Asachi echnical University Iasi, Faculty of Textile and Leather Engineering and Industrial Management, 29 Dimitrie Mangeron Blvd., 700050, Iasi, Romania 2 Romanian Inventors Forum, 3 Sf. Petru Movila Str., Bl. L11, III/3, 700089, Iasi, Romania 3Aurel Vlaicu Uiversity of Arad, Engineering Faculty, Textile Department, 77l Revoluþiei Blvd., 310130, Arad, Romania 4Alexandru Ioan Cuza University of Iasi, ARHEOINVEST Interdisciplinary Platform, 22 Carol I Blvd., Corp G Dmisol, 700506, Iasi, Romania
LILIANA ROZEMARIE MANEA1,2*, ION SANDU2,3* 1 “Gheorghe Asachi” Technical University Iasi, Faculty... more LILIANA ROZEMARIE MANEA1,2*, ION SANDU2,3* 1 “Gheorghe Asachi” Technical University Iasi, Faculty of Textile and Leather Engineering and Industrial Management, 29 Dimitrie Mangeron Blvd., 700050, Iasi, Romania 2 Romanian Inventors Forum, Str. Sf.P.Movila 3, L11, III/3, 700089, Iasi, Romania 3 "”Alexandru Ioan Cuza” University of Iasi, ARHEOINVEST Interdisciplinary Platform, 11 Carol I Blvd., Corp G demisol, 700506, Iasi, Romania
The wide band dielectric spectroscopy analysis of the 1.5% multi walled carbon nanotube (MWNT) co... more The wide band dielectric spectroscopy analysis of the 1.5% multi walled carbon nanotube (MWNT) contain and 20% polyamide 6 (PA6) nanowebs obtained by three different treatments applied to the MWNTs (chemical, mechanical and mixed) was investigated. A morphological analysis of the samples was carried out using the scanning electron microscopy (SEM) and atomic force microscopy (AFM) principles. The evolution of the dielectric constant (Eps'), imaginary permittivity (Eps"), dissipation factor (Tan δ) and the conductivity modulus were analysed, both from an experimental and a theoretical point of view.
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