Thematische Bibliographien / Electrospininig

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Buchteile
  4. Konferenzberichte

Auswahl der wissenschaftlichen Literatur zum Thema „Electrospininig“

Autor: Grafiati
Veröffentlicht am 28. Juni 2021
Zuletzt aktualisiert am 13. Februar 2022

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Zeitschriftenartikel zum Thema "Electrospininig"

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Lu, Shen-Zhou, Xiao-Ping Zhang, Juan Wang, Tie-Ling Xing und Jian Jin. „Effect of degumming ph value on electrospining of silk fibroin“. Thermal Science 18, Nr. 5 (2014): 1703–4. http://dx.doi.org/10.2298/tsci1405703l.

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Regenerated silk fibroin fibers show properties dependent on the molecular weight of fibroin. The cocoon-degumming approaches had great impact on the degradation of silk fibroin. The effect of degumming pH value to electrospining of fibroin was studied in this paper. The viscosity and molecular weight of regenerated silk fibroin were studied using rheometer and gel electrophoresis. The results showed that the weaker the alkalinity of degumming reagent, there was the milder the effect on silk fibroin molecular. The fibroin fibers can be prepared by electrospining with low concentration of regenerated silk fibroin solution.
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Chu, Yun Yun, und Yu Chou Chao. „Fabricate Dye-Sensitized Solar Cell with Electrospining“. Advanced Materials Research 335-336 (September 2011): 1117–20. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1117.

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Dye adsorption on Ti02and electron transport in Ti02film are the two critical factors in determining efficiency of the the dye sensitized solar cell (DSSC). Increasing dye adsorption which increases the light harvesting is usually achieved by using nanoporous or nanoparticle Ti02films. Electron transport is determined by the inter-particle resistance of Ti02film. Electrospinning is a viable method for forming porous structure materials with high surface area. In this study, it was found that electrospinning is able to achieve good solar cell performance due to the high electron transport caused by the pores in the Ti02film.
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Yermagambet, B. T., M. K. Kazankapova, A. T. Nauryzbaeva, Z. A. Mansurov, G. T. Smagulova und B. B. Kaidar. „PRODUCTION OF CARBON FIBERS BY ELECTROSPINING METHOD“. NEWS of National Academy of Sciences of the Republic of Kazakhstan 4, Nr. 436 (15.08.2019): 86–94. http://dx.doi.org/10.32014/2019.2518-170x.101.

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4

Liu, Yang, Jie Li und Zhi Juan Pan. „Effect of Wet Post-Drawn on Structures and Properties of PA6/MWNTs Nanofiber Filaments“. Advanced Materials Research 175-176 (Januar 2011): 90–94. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.90.

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Electrospining technique is one of the hotest topics all over the world. The main form of the electrospun products is generally nonwoven fiber web with the poor mechanical properties. Consecutive PA6/MWNTs nanofiber filaments were successfully fabricated by an improved electrospining method. Peregal O was used as the bath to post-draw the as-spun filaments and the effects of draw ratio on their structures and properties were studied. The results show that with the increase of the draw ratio, the diameters of filament and fiber decrease; while the degree of orientation arrangement and crystallinity of the fibers is obviously improved and the breaking strength and initial modulus of the filaments increase. As the maximum draw ratio reaches 1.7, the breaking strength and initial modulus of the filament are 2.64 times and 4.2 times as compared to those of the control sample respectively.
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5

Teng, Yu, Jinliang Zhang, Yingjuan Li, Chuanxiong Cai und Fuliang Chen. „Preparation of Fe3O4 @ CaP magnetic fiber scaffold with electrospining“. IOP Conference Series: Earth and Environmental Science 692, Nr. 2 (01.03.2021): 022012. http://dx.doi.org/10.1088/1755-1315/692/2/022012.

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6

Jiang, Guo Jun, Wen Min Zhao und Xiao Hong Qin. „Composite Nanofibers Containing Microparticles Produced via a Stepped Pyramid-Shaped Spinneret“. Advanced Materials Research 893 (Februar 2014): 149–52. http://dx.doi.org/10.4028/www.scientific.net/amr.893.149.

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A novel free surface electrospining via a stepped pyramid-shaped spinneret was used to prepare composite nanofibers containing microparticles. We investigate the spinnability of Polyacrylonitrile (PAN) solution containing graphite powder microparticles. The influence of microparticle on fiber diameter has been studied. This method can be used to produce composite nanofibers containing microparticles structures by electrospinning in mass scale.
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7

Chu, Yun Yun, und Yu Chou Chao. „Preparation of Photoanode of Dye-Sensitized Solar Cell by Electrospining“. Advanced Materials Research 627 (Dezember 2012): 896–99. http://dx.doi.org/10.4028/www.scientific.net/amr.627.896.

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The dye-ability and electron transport property of TiO2 film are the two critical factors in determining efficiency of the the dye sensitized solar cell (DSSC). Increasing dye adsorption which increases the light harvesting is usually achieved by using nanoporous or nanoparticle TiO2 films. Electron transport is determined by the inter-particle resistance of TiO2 film. Electrospinning is a viable method for forming porous structure materials with high surface area and less immersing time. In this study, it was found that electrospinning is able to achieve good solar cell performance due to the high electron transport caused by the nano-pores in the TiO2 film.
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8

El-Newehy, Mohamed H., Mehrez E. El-Naggar, Saleh Alotaiby, Hany El-Hamshary, Meera Moydeen und Salem Al-Deyab. „Green Electrospining of Hydroxypropyl Cellulose Nanofibres for Drug Delivery Applications“. Journal of Nanoscience and Nanotechnology 18, Nr. 2 (01.02.2018): 805–14. http://dx.doi.org/10.1166/jnn.2018.13852.

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9

Liao, Sheng-Hui, Shi-Yu Lu, Shu-Juan Bao, Ya-Nan Yu und Min-Qiang Wang. „NiMoO4 nanofibres designed by electrospining technique for glucose electrocatalytic oxidation“. Analytica Chimica Acta 905 (Januar 2016): 72–78. http://dx.doi.org/10.1016/j.aca.2015.12.017.

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10

Xia, Su, Zheng Wang, Jing Quan Yang, Li Mei Hao und Jin Hui Wu. „Preparation and Characterization of Antibacterial Electrospun Polyurethane Fibers Containing TiO2-Ag Nanoparticles“. Advanced Materials Research 79-82 (August 2009): 667–70. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.667.

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A novel antibacterial material was prepared by electrospining polyurethane (PU) containing TiO2-Ag nanoparticles in this study. The average diameter of PU electrospun nanofibers decreased with increasing concentration of TiO2-Ag.These nanofibers membrane showed high antibacterial activities against Staphylococcus aureus and Escherichia coli, respectively. The mixed mode of PU electrospun fibers and TiO2-Ag nanoparticles was a physical form. The addition of TiO2-Ag did not affect the mechanical property of the mat much.
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Dissertationen zum Thema "Electrospininig"

1

Misiurev, Denis. „Strukturální a elektrické vlastnosti PVDF-CNT kompozitu“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442593.

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Electrospininig se osvědčil jako jeden z nejpopulárnějších a nejrozšířenějších způsobů výroby vysoce kvalitních vláken s požadovanými parametry. Kvalita a morfologie vyráběných vláken závisí na mnoha parametrů, jako je vlhkost, dávka materiálu, aplikované napětí atd. Omezení keramických piezomateriálů (křehkost, toxicita vzorků obsahujících olovo, obtížnost přípravy složitých tvarů atd.) vynutila výzkum v oblasti piezoelektrických polymerů. Jedním z nich je polyvinylidenfluorid (PVDF). polyvinylidenfluorid může by být připraven v různých formách: tenké filmy, objemové vzorky, vlákna. PVDF vlákna přitahují největší pozornost díky vysoké flexibilitě, nízké hmotnosti, mechanické stabilitě a chemické inertnosti. Vlastnosti PVDF vláken lze zlepšit pomocí doplňujících materiálů: keramické částice, kovové nanočástice, Graphicitové materiály jako jsou oxid Graphicenu nebo uhlíkové nanotrubičky (CNT).
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Aleksandra, Miletić. „Funkcionalni materijali na bazi elektrospinovanih nanovlakana“. Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=111138&source=NDLTD&language=en.

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Funkcionalni materijali na osnovu elektrospinovanih nanovlakana nalaze sve veću primenu u raznim oblastima industrije: biomedicina, farmacija, senzori, filrtacija, ambalaža itd. Elektrospining tehnika je jedna od metoda za dobijanje materijala na osnovu nanovlakana iz polimernih rastvora korišćenjem visokog napona. Korišćenje elekrospining tehnike ima brojne prednosti u odnosu na konvencionalne tehnike, pre svega zbog lakoće inkorporacije aktivne komponente u polimernu matricu, a i specifične morfologije i 3D strukture, jer usled nanometarskih dimenzija, vlakna imaju veliki odnos specifične površine i zapremine i poroznosti, samim tim veliku kontaktnu površinu sa supstratima, reaktivnim agensima i mikroorganizmima. Zbog proizvodnje materijala na nanonivou, aktivna komponenta se fino dispergije u polimernoj matrici i time se obezbeđuje bolja aktivnost ovih materijala. Za razliku od konvencionalnih filmova, funkcionalni materijali na osnovu elektrospinovanih nanovlakana su aktivni po celoj zapremini. Cilj ove doktorske disertacije bio je optimizicija procesnih parametara elektrospininga i validacija aktivnosti funkcionalnih materijala za različite primene, što je postignuto pravilnim odabirom materijala i aktivnih komponenti, optimizacijom sastava materijala, karakterizacijom materijala adekvatnim metodama i validacijom aktivnosti materijala. Razvijeni su materijali za primenu u oblasti kozmetike, ambalaže, filtracije, senzora, stomatologije i provodnih materijala, čija je aktivnost verifikovana u laboratorijskim uslovima (TRL 4).
Functional materials based on electrospun nanofibers are increasingly used in various fields of industry: biomedicine, pharmacy, sensors, filtration, packaging, etc. Electrospining technique is one of the methods for obtaining nanofibers from polymer solutions using high voltage. The use of electrospinning technique has many advantages over conventional techniques, primarily because of the ease of incorporation of the active component into the polymer matrix, as well as the specific morphology and 3D structure, because due to the nanometer dimensions, the fibers have a large ratio of specific surface area to volume and porosity, and thus a high contact surface with substrates, reactive agents, and microorganisms. Due to the production of materials at the nanoscale, the active component is finely dispersed within the polymer matrix, thereby ensuring better activity of these materials. Unlike conventional films, functional materials based on electrospinned nanofibers are active throughout the volume. The aim of this PhD thesis was to optimize the electrospining process parameters and validate the activity of functional materials for various applications, which was achieved by proper selection of materials and active components, optimization of material composition, characterization of materials by appropriate methods and validation of material activity. Materials have been developed for use in the fields of cosmetics, packaging, filtration, sensors, dentistry and conductive materials, the activity of which has been verified under laboratory conditions (TRL 4).
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Chu, Yun-Yun, und 朱芸芸. „Preparation of the Photoanode of Dye-Sensitized Solar Cells by Electrospining“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/zujmxp.

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博士
國立臺北科技大學
工程科技研究所
101
Generally, the efficiency of the electron-injection process is strongly dependent on the bonding structure of the dye molecules absorbed on the TiO2 film. In addition, electron transfer in the DSSC is strongly affected by the electrostatic and chemical interactions between the TiO2 surface and the absorbed dye molecules. The TiO2 film usually need to coat more than twice. In order to let dye molecules suffieiently absorbed on the TiO2 film, it usually immerse the film into the dye solution more than 8 hours. We have successfully demonstrated that the electrospun photoanode could provide a competitive alternative to the fabrication of DSSCs with less time and lower cost. We believe the simple and cheap merits of electrospinning will increase its potential in DSSCs and help them move to commercialisation quickly. The overall conversion efficiency of DSSC with photoanode prepared by the electrospun process showed slightly lower than that of conventional process.
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4

Bo-Chiun-chen und 陳博群. „Electrospining nano-structure photo-catalyst of TiO2 synthesized by sol-gel method“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/umexcn.

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碩士
國立高雄海洋科技大學
微電子工程研究所
103
In this study, titanium dioxide (TiO2) photocatalyst powder was prepared by sol-gel method .Titaniumisopropoxide mixed with deionized water DI was used to precursor for titaniumisopropoxidesynthesization. After synthesization Tio2was centrifugallyseparated and DI water washing. The route of separation and washing was repeatedseveral time. The as synthesized powder was dried at 80℃ in an oven. The as dried TiO2powder was treated with post sinteredat 300~900℃ in air. From XRD analysis , the crystallineof TiO2powder were better with sintering temperature .The structure of TiO2samples sintered at 500~600℃change from anatase into rutile phase. The crystalline of TiO2was more obvious by sol-gel method at 80℃as compared to that synthesized at room temperature . The as prepared TiO2 powder was added to polyvinyl alcohol (PVA) and deionized water for Electrostatic spinning nanowire. The as electrostatic spinning TiO2nanowire were applied for degradation measurement. From the study, it helpus explore and understand the key functions of different phases ofTiO2applied for photocatalystic degradation and the preparing process of nanowire films. Keywords:Sol-gel ,TiO2, photocatalyst, electrospinning
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Fernandes, Patrícia Esteves. „Develpment of polymeric matrices for application in skin regeneration“. Master's thesis, 2015. http://hdl.handle.net/10400.6/4725.

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Skin is the largest organ of the human body, and it is involved in the preservation of homeostasis of the body fluids, temperature and protection against infectious agents. When skin is injured, a complex process of regeneration begins. To promote skin regeneration it may be coated with proper biomaterials that contribute for the restoration of skin structure and functions, by reducing the risk of infection, avoiding dehydration, pain and reducing the formation of scar. Herein, a new sponges (S) aimed to promote skin regeneration ware developed. The materials used of the production this sponge were: Chitosan and Gelatin. Sponges were coated with a membrane (M), the materials used were deacetylated Chitosan, Poly (ethylene oxide) (PEO) and Poly (ε-caprolactone) (PCL), mimicking the natural anatomy and physiology of skin. The coated sponge (CS) produced is biocompatible, biodegradable, antiinflammatory and antimicrobial porous structure that allow the difusion of nutrients and waste products. Furthermore, Ibuprofen was also loaded at sponges to improve the skin regenenation, by decreasing wound edema and decreased production of inflammatory mediators. The structure of the biomaterials developed here (S, M and CS) were initially characterized by Fourier transform infrared spectroscopy (FTIR). Ther morphology was characterized by scanning electron microscopy (SEM). Cellular adhesion and internalization into the porous structures of the biomaterials were visualized by confocal laser scanning microscopy (CLSM). The cytotoxicity profile of the biomaterials were characterized through 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl- 2H-tetrazolium bromide (MTT) assays and the results obtained confirmed their biocompatibility. The antimicrobial activity of the sponges were also evaluated and the results showed that they were able to inhibit the growth, at the surface, of the most common microorganism in skin infection (Staphylococcus aureus). In conclusion, the produced porous sponges has suitable properties for improving the healing process of cutaneous wounds.
A pele é o maior órgão do corpo humano e este órgão está envolvido na preservação da homeostase dos fluidos corporais, manutenção da temperatura e protecção contra agentes infecciosos. Quando a estrutura da pele é comprometida inicia-se um complexo processo de regeneração. Para promover este processo a pele pode ser revestida com biomateriais com o objectivo de reduzir o risco de infecção, desidratação, dor e a formação de cicatriz. No presente estudo foram desenvolvidas novas esponjas (S) para a regeneração da pele. Os materiais utilizados na sua produção foram: O Quitosano e a Gelatina. Por outro lado as esponjas também foram revestidas com uma membrana (M), em que os materiais usados foram o Quitosano desacetilado, Óxido de polietileno (PEO) e policaprolactona (PCL), imitando a anatomia e fisiologia natural da pele. A esponja revestida (CS) é biocompatível, biodegradável, possi uma estrutura porosa com propriedades antimicrobianas, que permite a difusão de nutrientes e produtos residuais. Além disso, no interior do CS as células permacem viáveis e ocorre a proliferação. O Ibuprofeno foi também incorporado nas esponjas para acelarar a regeneração da pele, ao diminuir o edema da ferida por diminuição da produção de mediadores inflamatórios. A estrutura dos biomateriais produzidos, foram analisadas por espectroscopia de infravermelho com transformada de Fourier (FTIR). A morfologia da superfície e do interior das esponjas foi caracterizada por microscopia eletrónica de varrimento (SEM). A adesão celular e internalização das células nas estruturas porosas foram visualizadas através de imagens de microscopia confocal. Os perfis citotoxidos dos biomateriais foram caracterizados por meio de ensaios de viabilidade celular, e os resultados obtidos confirmaram a sua biocompatibilidade. A actividade antimicrobiana dos biomateriais foi também avaliada e os resultados mostraram que as esponjas inibem o crescimento na sua superfície, do microrganismo mais comum das infecções de pele (Staphylococcus aureus). As estruturas porosas têm propriedades adequadas para melhorar o processo de cicatrização de feridas cutâneas.
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Buchteile zum Thema "Electrospininig"

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Farias, Taisa Lorene Sampaio, Maria Oneide Silva de Moraes, Walter Ricardo Brito, Marcos Marques da Silva Paula und João de Deus Pereira de Moraes Segundo. „Membrana formada por blenda de Poli (ɛ-Caprolactona) e acetado de celulose contendo composto fenólico produzida pela técnica electrospining“. In Ensino, pesquisa e extensão: uma abordagem pluralista (Volume VI). Editora Conhecimento Livre, 2020. http://dx.doi.org/10.37423/200902696.

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Konferenzberichte zum Thema "Electrospininig"

1

Shi, Yong, Shiyou Xu und Sang-Gook Kim. „Partially Aligned Piezoelectric Nanofibers by Sol-Gel Electrospining Process“. In ASME 4th Integrated Nanosystems Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/nano2005-87082.

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This paper reports the fabrication of partially aligned Lead Zirconate Titanate (PZT) nanofibers with an average diameter of 150 nm by Sol-Gel Electrospinning process. Both randomly distributed and uniaxially aligned PZT fibers were obtained from the sol-gel PZT solution with viscosity modified by polyvinyl pyrrolidone (PVP). The diameters of the nano fibers can be further reduced or controlled for different applications. SEM, TEM and x-ray diffraction (XRD) are used to characterize the nano-fibers and their crystal structures. XRD confirmed that pure perovskite phase was formed after the as-spun fibers being annealed at about 650°C. Different approaches have been explored to fabricate the uniaxially-aligned PZT nano-fibers. Microelectromechanical (MEMS) based micro-fabrication technologies are used to assist the development of the nano-fibers in designing the test samples, depositing and patterning the electrodes, and also testing the performance of the nano fibers.
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Lin, Y. L., Z. H. Liu, C. T. Pan, L. W. Lin, C. K. Yen, Z. Y. Ou und C. H. Taso. „Characteristic of single-fiber PVDF nanoharvester via new hollow cylindrical near-field electrospining process“. In 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII). IEEE, 2013. http://dx.doi.org/10.1109/transducers.2013.6627078.

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3

Zhang, Zhichun, Xueyong Jiang, Yanju Liu und Jinsong Leng. „Fabrication and EM shielding properties of electrospining PANi/MWCNT/PEO fibrous membrane and its composite“. In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, herausgegeben von Nakhiah C. Goulbourne und Zoubeida Ounaies. SPIE, 2012. http://dx.doi.org/10.1117/12.915110.

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4

Balaban, O., I. Grygorchak, A. Borysyuk, M. Larkin, O. Hevus, N. Mitina, A. Zaichenko, V. Datsyuk und S. Trotsenko. „Electrospining and physical properties of nanofiber polymer-inorganic planar quantum layers, hybridized with 0-D Fe2O3“. In 2017 IEEE 7th International Conference "Nanomaterials: Application & Properties" (NAP). IEEE, 2017. http://dx.doi.org/10.1109/nap.2017.8190260.

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Liu, Zong-Hsin, Cheng-Teng Pan, Zong-Yu Ou und Wei-Chuan Wang. „Hollow cylindrical near-field electrospining high β-phase crystallisation of large PVDF nanofiber array for flexible energy conversion“. In 2012 IEEE Sensors. IEEE, 2012. http://dx.doi.org/10.1109/icsens.2012.6411290.

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