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Multifunctional carbon nanofiber systems mass produced from water soluble polymers / Lee D. Cremar in CHEMICAL FIBERS INTERNATIONAL, Vol. 66, N° 1 (03/2016)
[article]
Titre : Multifunctional carbon nanofiber systems mass produced from water soluble polymers Type de document : texte imprimé Auteurs : Lee D. Cremar, Auteur ; Javier Acosta-Martinez, Auteur ; Alexsandra Villarreal, Auteur ; Alfonso Salinas, Auteur ; Lin Wei, Auteur ; Yuanbing Mao, Auteur ; Karen Lozano, Auteur Année de publication : 2016 Article en page(s) : p. 40-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conduction électrique
Fibres de carbone
Hydrophobie
Matériaux poreux
Nanofibres
Nontissés
Oléophilie
Solutions de polymère
Stabilité thermique
ThermogravimétrieRésumé : The high cost of polymer precursors, usage of organic solvents and/or energy consumption during carbonization post-processes has limited the use of carbon fiber systems for every day applications. Here, nonwoven nanofiber mats are developed utilizing the Forcespinning technology and subsequently exposed to acid vapor induced dehydration and low temperature carbonization (T < 800 °C) processes to produce multifunctional fine carbon fibers. This method allows for the production of highly porous nonwoven carbon cloths or yarns with micro- and mesoporosity. The fiber diameter can be tuned in the range of hundreds of nanometers to several microns. Thermophysical and microstructural characterization indicate graphitic formation due to carbonization that occurs during the chemical and heat treatment. The developed system shows high electrical conductivity, high surface area, thermal stability, hydrophobicity, and oleophilic behavior. En ligne : https://drive.google.com/file/d/1-MLQlexnUDaPandtoAvzA3bW7YI4Dxu2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25846
in CHEMICAL FIBERS INTERNATIONAL > Vol. 66, N° 1 (03/2016) . - p. 40-42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18021 - Périodique Bibliothèque principale Documentaires Disponible Multifunctional carbon nanofiber systems mass produced from water soluble polymers / Lee D. Cremar in CHEMICAL FIBERS INTERNATIONAL, (09/2016)
[article]
Titre : Multifunctional carbon nanofiber systems mass produced from water soluble polymers Type de document : texte imprimé Auteurs : Lee D. Cremar, Auteur ; Javier Acosta-Martinez, Auteur ; Alexsandra Villarreal, Auteur ; Alfonso Salinas, Auteur ; Lin Wei, Auteur ; Yuanbing Mao, Auteur ; Karen Lozano, Auteur Année de publication : 2016 Article en page(s) : p. 71-73 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Carbonisation
Déshydratation
Fibres de carbone
Matériaux poreux
Nanofibres
Nontissés
Polymères -- Synthèse
Technique de la productionIndex. décimale : 677.4 Textiles artificiels Résumé : The high cost of polymer precursors, usage of organicsolvents and/or energy consumption during carbonization post-processes has limited the use of carbon fiber systems for every day applications. Here, nonwoven nanofiber mats are developed utilizing the Forcespinning technology and subsequently exposed to acid vapor induced dehydration and low temperature carbonization (T C 800 °C) processes to produce multifunctional fine carbon fibers. This method allows for the production of highly porous nonwoven carbon cloths or yarns with micro- and mesoporosity. The fiber diameter can be tuned in the range of hundreds of nanometers to several microns. Thermophysical and microstructural characterization indicate graphitic formation due to carbonization that occurs during the chemical and heat treatment. The developed system shows high electrical conductivity, high surface area, thermal stability, hydrophobicity, and oleophilic behavior. En ligne : https://drive.google.com/file/d/1CZ5uOtnGzkESX329OXzY6LNEkdC3U9u7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26937
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Code-barres Cote Support Localisation Section Disponibilité 18302 - Périodique Bibliothèque principale Documentaires Disponible Nanofibers from recycled post-consumer carpet and bottles / Damien Deehan in CHEMICAL FIBERS INTERNATIONAL, Vol. 70, N° 4 (12/2020)
[article]
Titre : Nanofibers from recycled post-consumer carpet and bottles Type de document : texte imprimé Auteurs : Damien Deehan, Auteur Année de publication : 2020 Article en page(s) : p. 170 Langues : Anglais (eng) Catégories : Bouteilles en matières plastiques -- Recyclage
Nanofibres
Polyéthylène téréphtalate
Tapis
Textiles et tissus -- Recyclage
VêtementsIndex. décimale : 677.4 Textiles artificiels Résumé : As part of a joint effort with Carpet America Recovery Effort (CARE), Dalton, GA/USA, Verdex Technologies has developed innovative technology that can take recycled PET carpet (and bottles) and turn them into an array of apparel and textile products for a variety of high value markets.
This disruptive technology enables the ap-parel industry and associated businesses alike, to play a role in solving the ever-growing problem of landfilling carpet and ocean plastic.
Verdex's patented spinning nozzle technology converts post-consumer carpet (PCC) material directly into nano/microfi bers which are blended with larger fi bers to form products for the apparel and textile markets. The technology is capable of spinning recycled cleaned PET carpet containing polypropylene and calcium carbonate components. It is interesting for the performance apparel market due the nanofibers producing a much stronger moisture vapor transmission rate (MVTR) compared to competing products on the market.Note de contenu : - Fig. 1 : Verdex process
- Fig. 2 : Human hair compared to nanofibersEn ligne : https://drive.google.com/file/d/1uSHqSxfomcppuCSFtA0evWlo8JxWx2k_/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35037
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Code-barres Cote Support Localisation Section Disponibilité 22511 - Périodique Bibliothèque principale Documentaires Disponible 22474 - Périodique Bibliothèque principale Documentaires Disponible Nanofibre veils for high performance composites / Gareth Beckermann in JEC COMPOSITES MAGAZINE, N° 102 (01-02/2016)
[article]
Titre : Nanofibre veils for high performance composites Type de document : texte imprimé Auteurs : Gareth Beckermann, Auteur Année de publication : 2016 Article en page(s) : p. 39-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Délaminage
Matériaux -- Fatigue
Matériaux hautes performances
Nanofibres
Résistance à la rupture
Résistance au chocs
Stratifiés -- Propriétés mécaniquesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Revolution fibres has developed Xantu.LayrTM, the world's first commercially available nanofibre interleaving veil. Xantu.LayrTM has been shows to improve the fracture toughness (delamination resistance), compression after impact strength (damage tolerance) and fatigue resistance of composite laminates. These nanofibre veils art as nano-scale reinforcemerits of the brittie resin matrix in the interlayer region, resulting in a tougher resin (even when used with toughened resin systems) that is legs prone to micro-cracking when stressed or impacted. Note de contenu : - A new solution to an age-old problem
- Mode I interlaminar fracture toughness
- Mode II interlaminar fracture toughness
- Compression after impact strength
- Fatigue life
- Practical applicationsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25448
in JEC COMPOSITES MAGAZINE > N° 102 (01-02/2016) . - p. 39-42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17764 - Périodique Bibliothèque principale Documentaires Disponible Nanofibrous polypeptide hydrogels with collagen-like structure as biomimetic extracellular matrix / Chengkun Zhao in COLLAGEN AND LEATHER, Vol. 5 (2023)
[article]
Titre : Nanofibrous polypeptide hydrogels with collagen-like structure as biomimetic extracellular matrix Type de document : texte imprimé Auteurs : Chengkun Zhao, Auteur ; Xing Li, Auteur ; Shaoquan Bian, Auteur ; Weinan Zeng, Auteur ; Alfredo Ronca, Auteur ; Ugo D'Amora, Auteur ; Maria Grazia Raucci, Auteur ; Jie Liang, Auteur ; Yong Sun, Auteur ; Qing Jiang, Auteur ; Yujiang Fan, Auteur ; Luigi Ambrosio, Auteur ; Xingdong Zhang, Auteur Année de publication : 2023 Article en page(s) : 13 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chimie biomimétique
hydrocolloïdes
Matrice extracellulaire
Morphologie (matériaux)
Nanofibres
PolypeptidesUn polypeptide est une chaîne d'acides aminés reliés par des liaisons peptidiques. On parle de polypeptide lorsque la chaîne contient entre 10 et 100 acides aminés. Au-dessus de 100 acides aminés on parle généralement de protéine.
Parmi eux, les peptides multi-cycliques, les peptides phosphorylés ou encore ceux intégrant des liaisons non-peptidiques ou des peptides conjugués.
Certains polypeptides constituent une famille d'antibiotiques dont les molécules très toxiques n'en permettent qu'un usage très limité. D'autres s’imposent aujourd’hui comme des éléments essentiels à la mise au point de vaccins ou de principes actifs destinés aux traitements de certaines pathologies telles que les cancers, les déficiences hormonales, l’ostéoporose.
Rhéologie
Tests de toxicitéIndex. décimale : 547 Chimie organique : classer la biochimie à 574.192 Résumé : Supramolecular peptides exhibit obvious similarities with collagen fibers in terms of self-assembly characteristics, nanofibrous structure, and responsiveness to external stimuli. Here, a series of supramolecular peptides were developed by altering the amino acid sequence, enabling the self-assembly of three types of 4-biphenylacetic acid (BPAA)-tripeptides into fibrous hydrogel through hydrogen bonding and π–π stacking under the influence of ion induction. Transmission electron and scanning electron microscopies revealed that the diameter of the fiber within nanofibrous hydrogels was ~ 10 and ~ 40 nm, respectively, which was similar with the self-assembled collagen fibers. For this reason, these hydrogels could be considered as a biomimetic extracellular substitute. Meanwhile, the gelation concentration induced by ions was even lower than 0.66 wt%, with an elastic modulus of ~ 0.27 kPa, corresponding to a water content of 99.34 wt%. In addition, the three supramolecular hydrogels were found to be good substrates for L929 cell adhesion and MC-3T3 cell proliferation. The overall results implied that BPAA-based hydrogels have a lucrative application potential as cell carriers. Note de contenu : - EXPERIMENTAL SECTION : Materials and methods - The preparation of BPAA-tripeptides - The preparation of BPAA-tripeptides - Hydrogel preparation and morphological characterization - Rheology - CD and fluorescence emission measurements - Cytotoxicity test - BPAA-tripeptides hydrogels co-culture with L929 cells and MC-3T3 cells - ALP staining of BMSCs co-culture with BPAA-tripeptides - Statistics
- RESULTS AND DISCUSSION : The design and optimization of BPAA-tripeptides - The self-assembled nanofibrillar structure of BPAA-tripeptides by changing the sequence of amino acid - Secondary structure and intermolecular interactions analyzed from CD and fluorescence emission spectroscopy - Viscoelastic property of peptides hydrogels through rheological testing - Impact of amino acid sequence change on biological propertiesDOI : https://doi.org/10.1186/s42825-022-00110-6 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-022-00110-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40059
in COLLAGEN AND LEATHER > Vol. 5 (2023) . - 13 p.[article]Nanosan nanofibers represent the next breakthrough in anti-pollution treatments / Laura Frazier in SOFW JOURNAL, Vol. 143, N° 10 (10/2017)
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PermalinkNovel filter media made of electrospun nanofibers for dedusting plants / Leonie Beek in NONWOVENS TRENDS, Vol. 5, N° 1 (2023)
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