1. A review of electro conductive textiles utilizing the dip-coating technique: Their functionality, durability and sustainabilityAlenka Ojstršek, Laura Jug, Olivija Plohl, 2022, pregledni znanstveni članek Opis: The presented review summarizes recent studies in the field of electro conductive textiles
as an essential part of lightweight and flexible textile-based electronics (so called e-textiles), with the
main focus on a relatively simple and low-cost dip-coating technique that can easily be integrated
into an existing textile finishing plant. Herein, numerous electro conductive compounds are discussed, including intrinsically conductive polymers, carbon-based materials, metal, and metal-based
nanomaterials, as well as their combinations, with their advantages and drawbacks in contributing
to the sectors of healthcare, military, security, fitness, entertainment, environmental, and fashion,
for applications such as energy harvesting, energy storage, real-time health and human motion
monitoring, personal thermal management, Electromagnetic Interference (EMI) shielding, wireless
communication, light emitting, tracking, etc. The greatest challenge is related to the wash and wear
durability of the conductive compounds and their unreduced performance during the textiles’ lifetimes, which includes the action of water, high temperature, detergents, mechanical forces, repeated
bending, rubbing, sweat, etc. Besides electrical conductivity, the applied compounds also influence
the physical-mechanical, optical, morphological, and comfort properties of textiles, depending on
the type and concentration of the compound, the number of applied layers, the process parameters,
as well as additional protective coatings. Finally, the sustainability and end-of-life of e-textiles are
critically discussed in terms of the circular economy and eco-design, since these aspects are mainly
neglected, although e-textile’ waste could become a huge problem in the future when their mass
production starts.
Ključne besede: electro conductive textiles, dip-coating, characterization, functional features, durability, sustainability, recyclability
Objavljeno v DKUM: 27.03.2025; Ogledov: 0; Prenosov: 8
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2. Synergic effect of large MXene nanosheets and protective coatings on improved electroconductivity and wash durability of MXene/polymer-modified cotton fabricLaura Jug, Silvo Hribernik, Alenka Ojstršek, 2025, izvirni znanstveni članek Opis: E-textiles and their wearable analogues are finding applications in a myriad of sectors, ranging from sensors to health and sports applications. The development of a truly functional and reusable textile substrate presents a challenging task; its design encompasses the fabrication of optimal functional conductive particles, as well as devising strategies for their application that will ensure their functional properties (e.g. conductivity) are retained in an undiminished state for a foreseeable period. In the presented study, we tackled these two aspects in an interdependent way: i) The enhancement of the electrical conductivity of MXene-modified cotton fabric by increasing the lateral size of nanosheets during the Ti3C2TX synthesis, and ii) The improvement of washing durability of MXenes on the fabric surface by selecting suitable protective coatings. The results of Scanning Electron Microscopy (SEM), X-ray powder Diffraction (XRD), Dynamic Light Scattering (DLS) and Atomic Force Microscopy (AFM) revealed the successful synthesis of large and stable MXene nanosheets with ultrathin flakelike nanostructures, high colloidal stability and delamination yields. Using multiple application procedures of dipping and drying, the MXene nanosheets formed extensive adhesion areas on the cotton fabric and overlapped the fibre pores, thus reducing the interfacial resistance between the sheets and improving the coating uniformity and, consequently, increasing electrical conductivity. Weaker adhesion and depletion of large nanosheets were further effectively prevented by protective polymer coatings. The MXene-coated/protected fabrics had sufficient electrical conductivity, even after 20 laundering cycles. Moreover, the surface hydrophobicity was negligibly reduced, preventing water accessibility and, thus, increasing the oxidation stability of the applied MXenes.
Ključne besede: Ti3C2TX MXene, synthesis parameters, cotton fabric, electrical conductivity, protective coatings, washing durability
Objavljeno v DKUM: 10.03.2025; Ogledov: 0; Prenosov: 15
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3. Možnost ponovne uporabe sedimenta po čiščenju odpadnih voda iz mlečno predelovalne industrije : magistrsko deloLaura Jug, 2020, magistrsko delo Opis: Velika količina sedimenta, ki nastane pri čiščenju odpadnih voda iz mlečno predelovalne industrije, skupaj z okoljskimi vplivi in strogimi zakonskimi predpisi predstavlja problematičen segment in postavlja vprašanje glede njegovega trajnostnega upravljanja. V magistrski nalogi smo z namenom raziskanja ponovne uporabe sedimenta po čiščenju odpadnih voda iz mlečno predelovalne industrije preučili primernost štirih organskih polielektrolitov kot alternativnih reagentov klasičnim anorganskim koagulacijskim sredstvom. Z izvedbo JAR testa in uporabo nizko molekularnega hitozana, natrijeve karboksimetil celuloze, polietilenimina in kolagena smo preverili učinkovitost čiščenja odpadnih voda iz mlečno predelovalne industrije ter pri tem analizirali karakteristike nastalega sedimenta. Rezultati so pokazali, da z izbrano metodo in uporabljenimi koaglacijsko/flokulacijskimi sredstvi pri preiskovanih pogojih nismo uspeli zadostno odstraniti v vodi prisotne nečistoče in s tem prečistiti vode tako, da bi ustrezala zakonsko določenim mejnim parametrom. Z vidika nastalega sedimenta smo najboljše rezultate obarjanja dosegli z uporabo nizko molekularnega hitozana in s spreminjanjem vrednosti pH po končanem JAR testu. Na podlagi dobljenih rezultatov IR spektroskopije smo v nastalem sedimentu zaznali signale, ki nakazujejo na prisotnost organskih kislin in vezi ogljikovodikov oborjenih iz odpadne vode. Končna analiza sestave mikrobne združbe je pokazala, da v pridobljenem sedimentu primarno ni prisotnih patogenih mikroorganizmov oziroma bakterij.
Ključne besede: sediment, odpadna voda, mlečno predelovalna industrija, polielektroliti, krožno gospodarstvo
Objavljeno v DKUM: 30.06.2020; Ogledov: 1117; Prenosov: 123
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4. Nadomeščanje šote z obnovljivimi vlakni v substratihLaura Jug, 2016, diplomsko delo Opis: Okoljski problematiki izkopavanja in rabe šotišč za namene vrtnarjenja se posveča vedno več pozornosti ter zanimanja pri iskanju potencialnih rešitev. V diplomski nalogi smo z namenom zmanjšanja uporabe šote v hortikulturi preučili primernost obnovljivih vlaken in komposta za gojenje rastlin ter uporabo v substratih. Pripravljenim 27-im mešanicam substratov smo izmerili fizikalne in kemijske parametre ter na njih preverili biološko odzivnost rastlin ječmena, kitajskega zelja in mačeh. Rezultati so pokazali, da so substrati, ki so sestavljeni na podlagi naravno obnovljivih vlaken, komposta in manjšega 30 % dodatka šote, dobri nadomestki tovarniško pripravljenim substratom, ki temeljijo na 100 % sestavi šote. Z zmanjševanjem deleža šote in povečanjem deleža komposta ter drugih naravnih vlaken lahko tako z veliko mero prispevamo k zmanjšanju ogljičnega odtisa, večji izrabi organskih odpadkov in ohranjanju koristnih šotnih habitatov.
Ključne besede: šota, kompost, rastni substrat, emisije CO2, naravno obnovljiva vlakna, biološko razgradljivi odpadki
Objavljeno v DKUM: 09.09.2016; Ogledov: 1683; Prenosov: 128
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