Essays about: "mechanical pulp"

Showing result 6 - 10 of 42 essays containing the words mechanical pulp.

  1. 6. Synthesis and Investigation of Nitrile-Containing Polymers Inspired by Lignin

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Tobias Lindborg; [2022]
    Keywords : Lignin; Polymer; Renewable; Bioresource; Glass transition temperature; Nitrile; Polymer technology; Chemistry; Technology and Engineering;

    Abstract : The lignin-inspired derivatives coniferyl aldehyde and sinapyl aldehyde were used to prepare nitrile-containing methacrylate monomers with the aim to synthesize bio-based polymers exhibiting high glass transition temperatures (Tgs). The aldehydes were initially transformed to the corresponding nitriles and then underwent methacrylation before being polymerised by free-radical polymerisation. READ MORE

  3. 7. Mechanical properties of viscose filament : Made from recycled cotton textile and softwood dissolving pulp

    University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Author : Sanne Karlsson; [2022]
    Keywords : Recycled cotton textile; recycled textile; dissolving pulp; wood dissolving pulp; softwood; viscose dope; viscose filament; the viscose process; spinning process; Återvunnen bomullstextil; återvunnen textil; dissolvingmassa; trädissolvingmassa; barrved; viskos dop; viskosfilament; viskosprocessen; spinningprocess;

    Abstract : The textile industry is one of the largest industries in the world and it causes up to 10 % of the global greenhouse gas emissions. With large environmental issues of cotton- and oil-based textiles, other options are explored such as man-made fibers producing fibers like viscose and lyocell. READ MORE

  4. 8. The influence of post-buckling damage on the tensile properties of single wood pulp fibers

    University essay from KTH/Hållfasthetslära

    Author : Raphael Andreolli; [2021]
    Keywords : Solid Mechanics; single fiber testing; wood pulp fibers; post-buckling damage; experiments; development of testing methods; tensile properties; tensile stiffness; tensile strength; Hållfasthetslära; enskild fiber testning; pappersmassa fiber; skada efter knäckning; experiment; utveckling av testutrustning; dragegenskaper; dragstyvhet; draghållfasthet;

    Abstract : The rapid growth of plastic waste from food packaging around the world demands renewable substitutes, such as natural fibers and biocomposites. Wood fibers are natural fibers extracted from trees and are commonly used in packaging. READ MORE

  5. 9. Development of pulp fiber charge in oxygen delignification of softwood

    University essay from KTH/Fiber- och polymerteknologi

    Author : Jiahao Mai; [2021]
    Keywords : fiber; fiber charge; fine content; oxygen delignification; softwood; fiber; fiberladdning; finmaterial; syrgasdelignifiering; barrved;

    Abstract : Esteves et.al. 2020 visade att syrgasdelignifiering ökar den totala fiberladdningen men leder inte alltid till ökad pappersstyrka. Denna studie syftar till att undersöka hur fiberladdning påverkar massans egenskaper. READ MORE

  6. 10. 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