20.500.12556/RUL-135596 Development of electrospun films from wastewater treatment plant sludge Electrospinning is a versatile method for producing continuous polymer nanofibers, including from wastewater treatment plant sludge (WTPS). In this context, purified WTPS was successfully used to produce electrospun fibers. The main objective of our research was to produce new, local, circular, renewable and environmentally friendly packaging material. The aim of the research was to purify and treat WTPS to make it suitable for the electrospinning process, thus producing a new material and chemically characterizing it in the first step. One of the major advantages of our process was that the electrospinning process could be carried out with water and ethylenediaminetetraacetic acid. The optimal viscosity was determined to be 20,000 mPas in order to produce sufficient nanofibers. Analyses such as Fourier-Transform Infrared Spectroscopy (FTIR) and $^1$H-NMR (proton nuclear magnetic resonance) were used to determine the substances of unpurified and purified WTPS. The tensile properties, contact angle, surface properties and differential scanning calorimetry of the final material were determined and used. The $^1$H-NMR analysis confirmed the presence of a small quantity of polyhydroxyalkanoates in the samples. Based on the properties, the final material was brittle and less stretchable compared to electrospun packaging films available in the market. wastewater treatment electrospinning differential scanning calorimetry tensile properties proton nuclear magnetic resonance spectroscopy packaging čiščenje odpadne vode elektropredenje diferenčna dinamična kalorimetrija natezne lastnosti jedrska magnetna resonanca embalaža true false true Angleški jezik Slovenski jezik Članek v reviji 2022-03-21 15:32:12 2022-03-21 15:32:14 2022-09-14 04:14:10 0000-00-00 00:00:00 2021 0 0 11 str. iss. 6, art. 733 Vol. 11 Jun. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 655 2079-6412 10.3390/coatings11060733 67870467 RAZ_Lavric_Gregor_2021.pdf RAZ_Lavric_Gregor_2021.pdf 1 0361C77FA2502C5EE48D7F1483678B8F cc2e35199311e88fee88d8338c327872b6812566082224b16384a5bb880cc12c ed21c20c-a923-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154760 https://www.mdpi.com/2079-6412/11/6/733 1 b3da0f76-a923-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154759 Naravoslovnotehniška fakulteta 0 0 0