Essays about: "aldehydes"

Showing result 6 - 10 of 24 essays containing the word aldehydes.

  1. 6. 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. 7. Modified lignin as replacement of carbon black in elastomers- For the development of sustainable tyre technology : The substitution of carbon black with modified lignin- Green tyre technology

    University essay from Karlstads universitet/Avdelningen för kemiteknik

    Author : Mostafa Ahmed Ismail; [2020]
    Keywords : lignin; tyre rubber; elastomeric materials; esterfication;

    Abstract : Due to its large flexibility, low-price, large availability, and properties lignin is seen as an important compound with a wide range of applications. The increasing demand of fossil-based rubber materials is causing a serious threat to the environment and it is contributing to plastic- and marine pollution, ozone depletion and carbon dioxide emission (CO2) [1,2]. READ MORE

  4. 8. Transparent paper: Evaluation of chemical modification routes to achieve self-fibrillating fibres

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

    Author : Paulina Sandberg Birgersson; [2020]
    Keywords : Transparent paper; nanopaper; nanocellulose; chemical modification of cellulose; cellulose nanofibrils CNF ; Transparent papper; nanopaper; nanocellulosa; kemisk modifiering av cellulosa; cellulosa nanofibriller CNF ; nanopapper;

    Abstract : Transparenta papper tillverkade av cellulosa nanofibriller (CNF), visar stor potential att kunna ersätta petroleumbaserade plaster inom många användningsområden, till exempel för mat- och varuförpackningar. CNF, även känt som nanocellulosa, kombinerar viktiga cellulosaegenskaper, med unika egenskaper hos nanomaterial. READ MORE

  5. 9. Photoredox catalysis with 10-phenyl-10H- phenothiazine and synthesis of a photocatalytic chiral proline-based organocatalyst

    University essay from KTH/Organisk kemi

    Author : Panagiotis Lamprianidis; [2020]
    Keywords : organic chemistry; photocatalysis; organocatalysis; organocatalyst; organic synthesis; organisk kemi; fotokatalys; organokatalys; organokatalysator; organisk syntes;

    Abstract : Photoredox catalysis applications for the purpose of new synthetic routes in organic and sustainable chemistry are hot topics in organic synthesis today. In the present study, the synthesis of a chiral proline-based organocatalyst functionalized with 10-phenyl-10H phenothiazine (PTH) photocatalytic moietiesis investigated and attempted for the first time. READ MORE

  6. 10. Polyvinylalcohol-carbazate (PVAC) inhibits bacteria growth

    University essay from Uppsala universitet/Institutionen för kvinnors och barns hälsa

    Author : Jakob Syk; [2019]
    Keywords : Turbidity; spectrophotometric assay; FITC; antibodies; qPCR;

    Abstract : Abstract Introduction This study evaluated the effect of the polymer polyvinylalcohol-carbazate (PVAC) on the bacteria Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis and Pseudomonas aeruginosa. PVAC is a polymer with a carbazate moiety that neutralizes free aldehydes and has shown great promise in stabilizing erythrocytes during long term storage. READ MORE