Essays about: "CNCs"

Found 5 essays containing the word CNCs.

  1. 1. Cellulose nanocrystals functionalized cellulose acetate electrospun membranes for adsorption and separation of nanosized particles

    University essay from Luleå tekniska universitet/Materialvetenskap

    Author : José Ignacio Del Río De Vicente; [2021]
    Keywords : Electrospinning; Cellulose Nanocrystals; Filtration; Adsorption; Cellulose Acetate Fibers;

    Abstract : Filtration and separation technologies remain as one of the biggest challenges humanity currently faces. The separation of different elements such as bacteria, viruses, heavy metals, particles, and chemical agents require the development of multifunctional membranes. READ MORE

  3. 2. Formulation of nanoemulsions stabilized by cellulose nanocrystals

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Marco Maccagno; [2020]
    Keywords : nanocellulose; hydroxypropyl methilcellulose; Pickering emulsions; microfluidization; drug delivery; nanocellulosa; hydroxipropylmetylcellulosa; Pickering emulsioner; microfluidization; drogleverans;

    Abstract : Cellulose nanocrystals (CNCs) are bio-based nanoparticles with the ability to stabilize oil and water emulsions thanks to their intermediate wettability and nanometric size. These and other types of particle-stabilized emulsions, commonly referred to as Pickering emulsions, are of great academic and industrial interest due to their superior stability against drop coalescence compared to classical surfactant-stabilized emulsions. READ MORE

  4. 3. Evaluation of cellulose nanocrystal alignment in oriented electrospun fibers

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Bermet Kerim Kyzy; [2017]
    Keywords : Electrospinning; alignment; cellulose nanocrystals;

    Abstract : Electrospinning is a fiber production method that has gained a special attention due to the simple setup and potential for the industry scale up to produce nanoregime polymer fibers. However, electrospun fibers have relatively poor mechanical properties, which could be improved by introducing reinforcing agents. READ MORE

  5. 4. Production of regenerated nanocomposite fibers based on cellulose and their use in all-cellulose composites

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Andrés García Vogel; [2017]
    Keywords : All-cellulose composites; regenerated cellulose nanocomposite fibers; halloysite nanotubes; cellulose nanocrystals; LiCl DMAc; bio based;

    Abstract : Biobased all-cellulose composites (ACCs), in which the matrix and the reinforcement are made out of the same material, have gained a noticeable increased attention in recent years. Their successful application would solve the commonly faced challenges with natural fiber composites regarding their chemical antipathy between the hydrophilic fiber and the usually hydrophobic polymer matrix, while still keeping the advantages of being environmental friendly. READ MORE

  6. 5. Carboxylated Cellulose Nanocrystals Extraction from Kraft Pulp Using Ammonium Persulfate as Low Cost Source & Sustainable Method for High Quality Flexible Packaging Bio-coating

    University essay from Lunds universitet/Förpackningslogistik

    Author : Gerald Perry Estavillo Marin; [2015]
    Keywords : affordable CNC extraction; high quality CNC; sustainable packaging; FT-IR; TEM; XRD; contact angle; transparency; haze; optical properties; food packaging; bio-packaging; bio-coating; plastics; PET film; polyethylene terephthalate; Kraft CNC; Kraft pulp; cotton CNC; oxygen barrier; nanocellulose crystals; ammonium persulfate; CNCs; cellulose nanocrystals; Chemistry;

    Abstract : One of the leading challenges presented in 21st century for packaging industry is to address the growing environmental problems related to non-renewable flexible packaging. This leads to new growing interest in bio-based materials, among them cellulose nanocrystals (CNCs), which have already shown good performance in improving anti-fog and oxygen & water vapor barrier properties when applied to flexible film. READ MORE