Essays about: "CTMP"

Showing result 1 - 5 of 9 essays containing the word CTMP.

  1. 1. The effect of fiber structure on chemical modification of cellulosic fibers

    University essay from KTH/Kemiteknik

    Author : Hedvig Palm; Linn Palmér; Emil Törnqvist; Alexander de Potocki; [2023]
    Keywords : Kemi; cellulosa; substitutionsgrad; pappersmassa; katjonisering; EPTMAC; CHPTAC; hållbarhet; blekt sulfatmassa; oblekt sulfatmassa; CTMP; dissolvingmassa; modifierad cellulosa;

    Abstract : För att skapa ett hållbart samhälle måste material av fossilt ursprung ersättas med förnyelsebara och miljövänliga alternativ. Ett sådant alternativ är cellulosa från vedfibrer, som har stor potential att kunna ersätta många fossila material i framtiden. READ MORE

  3. 2. The Influence of pH, Temperature and Number of Wash Steps on the Washing Efficiency of CTMP Pulp

    University essay from Karlstads universitet/Avdelningen för kemiteknik

    Author : André Monlars; [2021]
    Keywords : Mechanical pulp; Chemi-thermomechanical pulp; Picea abies; Extractives; Wood resin; Deresination; Washing; Mekanisk massa; Kemitermomekanisk massa; Picea abies; Extraktivämnen; Tvättning;

    Abstract : In this report, the washing efficiency of chemi-thermomechanical pulp (CTMP) from Norway spruce (Picea abies) was investigated when adjusting the temperature and pH during washing as well as implementing different number of wash steps. Concurrent effects of having a high pH and temperature were also examined. READ MORE

  4. 3. Optimization of tear strength in a multi-ply paperboard

    University essay from Karlstads universitet

    Author : Sofie Erhage; [2017]
    Keywords : ;

    Abstract : The thesis has been carried out as a part of the Master of Science in mechanical engineering at Karlstads University. The purpose of the study was to evaluate how different variables affect the tearing resistance in a multi-ply paperboard. READ MORE

  5. 4. Influence of the adhesive on the mechanical properties in laminated multi-layer paperboard : Evaluation of two common dispersion adhesives, their failure modes, internal strength and influence on bending and tensile properties

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Anton Johansson; [2014]
    Keywords : Paperboard; adhesive; laminated;

    Abstract : The objectives of the thesis were to investigate the adhesives influence on the mechanical properties in laminated multi-layer paperboard. The study also strived to find a method to investigate the interface strength of the adhesive layer. READ MORE

  6. 5. Quantification of resin acids, fatty acids and sterols in process and waste water from forest industry

    University essay from Avdelningen för kemi och biomedicinsk vetenskap

    Author : Taner Ismailov; [2013]
    Keywords : effluent; waste water; forest industry; wood resin; wood extractives; resin acids; sterols; fatty acids; LLE; Liquid-liquid extraction; SPE; Solid phase extraction;

    Abstract : This work focuses on wood extractives in effluents from the CTMP plant at Skoghall Mill. Pulp and paper industry effluents contain mostly natural compounds which are part of the trees. They are toxic to aquatic life but harmless in nature, as they are present in low concentrations. READ MORE