Essays about: "water repellent"

Showing result 1 - 5 of 17 essays containing the words water repellent.

  1. 1. Varnishing of Fiber-based Closures

    University essay from Lunds universitet/Förpackningslogistik

    Author : Nisha Sunil David; [2023]
    Keywords : Varnishing; fiber-based closures; water-based spray coating; packaging; repulpability ; Technology and Engineering;

    Abstract : This research aims to investigate water-based varnishes and technologies to coat fiber-based closures to attain water barrier properties. To ensure recyclability the repulpability of coated and uncoated lids is tested. The research approach is exploratory. READ MORE

  3. 2. Yearly distribution and composition of per- and polyfluoroalkyl substances (PFAS) in Luleå wastewater treatment plant

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Moa Sjöberg; [2023]
    Keywords : PFAS; WWTP; Wastewater treatment; Consumer products; Precursors;

    Abstract : PFAS (per- and polyfluoroalkyl substances) are a large group of substances that are used in a large variety of products because of their unique water and dirt repellent properties. The substances are extremely persistent and can spread over large distances in groundwater, surface water, and in the air, which makes them an environmental and a health concern. READ MORE

  4. 3. Automation of a rotating bed reactor for PFAS remediation

    University essay from Umeå universitet/Institutionen för fysik

    Author : Axel Martin; [2023]
    Keywords : Programming; automation; experimentation; optimization;

    Abstract : Properties such as being water and oil repellent and being heat resistant make per- and polyflouroalkyl substances (PFAS) useful in a wide range of products. Since they do not break down in the environment, PFAS pollution makes it way back into drinking water and seafood. READ MORE

  5. 4. Development and Optimization of Near-infrared spectroscopy

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Amanda Hahlin; [2023]
    Keywords : Near-infrared spectroscopy; NIRS; Textile sorting; Principal component analysis; PCA; Post-consumer end-of-life textiles;

    Abstract : With the growing demand for sustainable options, the existing sorting capacities are limiting the potential for fiber-to-fiber recycling. With the help of near-infrared spectroscopy (NIRS), automated sorting of textiles with high accuracy is possible due to the easy access for polymer identification. READ MORE

  6. 5. Crosslinked Cartonboard - Challenges and possibilities

    University essay from Mälardalens universitet/Akademin för innovation, design och teknik

    Author : Malin Elvin; [2022]
    Keywords : Cartonboard; crosslinking; mechanical properties; SCT;

    Abstract : The need for sustainable packaging is growing, and plastic waste needs to be reduced. A suitable alternative could be fibre-based packaging and cartonboard, and several actions could enhance this alternative. This study investigates crosslinking, a method to create stronger bonds between the OH-groups in the material. READ MORE