Essays about: "softwood"

Showing result 16 - 20 of 63 essays containing the word softwood.

  1. 16. 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

  3. 17. Valorization of lignin for material applications

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

    Author : Filippa Winkvist; [2021]
    Keywords : microwave-assisted extraction; lignin; LCC; PLA; Pine; mikrovågsassisterad extraktion; lignin; LCC; PLA; tall;

    Abstract : Lignin är, med undantag för cellulosa, den av de naturliga polymererna det finns mest av på jorden och den ledande källan till fenolföreningar. De träväxterna som existerar idag, innehåller ca 30 % av just denna biopolymer. READ MORE

  4. 18. Raman Spectroscopy for Characterizing Porous carbon

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Rima Zuriah Amdani; [2020]
    Keywords : Raman Spectroscopy; Porous Carbon; Biochar; Carbonization; Aromaticity; Physics and Astronomy; Technology and Engineering; Chemistry;

    Abstract : Porous carbon obtained from low cost and abundant biomass has gained attention as renewable material feedstock. In this study, porous carbon biochar produced through pyrolysis was investigated by Raman spectroscopy to disclose the structural properties. READ MORE

  5. 19. Development of magnetic lignin nanoparticles from low-molecular-weight eucalyptus and spruce lignin fractions

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

    Author : Anna Wessén; Eliot Diklev; Lejla Al-Tamimi; [2020]
    Keywords : Magnetic nanoparticles; Hardwood; Softwood; Self-assembly; Lignin;

    Abstract : Lignin is one of the most common biopolymers in the world. Together with cellulose andhemicellulose it constitutes the fibers in the wood. It has a high molecular weight due to its complexstructure consisting of crossed-linked phenolic monomers and is concatenated with different types ofcarbon and ether bonds. READ MORE

  6. 20. Design of multilayer paperboard for optimisedcompression strength

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

    Author : Ali Salem Ali; [2020]
    Keywords : Compression strength; Paper; Cardboard; Dynamique Formette; Dynamic sheet former; SCT; Shortspan compression test; fibre; fibre properties; fiber; fiber properties; Multilayer;

    Abstract : This master thesis was issued by BillerudKorsnäs Gruvön. The focus of this thesis was theinvestigation of the effects different fibre types has on the compression strength of the whole paper product. This stems from wanting to better understand how to produce a better paperboard construction with respect to stacking, storage, and transport. READ MORE