Sökning: "wet-end agent"

Hittade 4 avhandlingar innehållade orden wet-end agent.

  1. 1. Biological role and technical application of xyloglucan endotransglycosylase and xyloglucan

    Författare :Maria Christiernin; KTH; []
    Nyckelord :xyloglucan endotransglycosylase; XET; cell wall; xyloglucan; wet-end agent; fiber modification; formation; mechanical properties;

    Sammanfattning : .... LÄS MER

  3. 2. Microfibrillated cellulose: Energy-efficient preparation techniques and applications in paper

    Författare :Mikael Ankerfors; Lars Wågberg; Akira Isogai; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microfibrillated cellulose; microfibrillar cellulose; nanofibrillated cellulose; nanofibrillar cellulose; cellulose nanofibrils; nanocellulose; MFC; NFC; CNF; production techniques; energy efficient; gel properties; films; enzymes; carboxymethylation; carboxymethyl cellulose; CMC; mechanical properties; oxygen barrier; homogenization; linting; papermaking; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : This work describes three alternative processes for producing microfibrillated cellulose (MFC; also referred to as cellulose nanofibrils, CNF) in which bleached pulp fibres are first pretreated and then homogenized using a high-pressure homogenizer. In one process, fibre cell wall delamination was facilitated by a combined enzymatic and mechanical pretreatment. LÄS MER

  4. 3. Evaluation of Furnishes for Tissue Manufacturing

    Författare :Johan Kullander; Lars Nilsson; Christophe Barbier; Thad Maloney; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

    Sammanfattning : Water removal on a tissue machine becomes progressively more difficult and expensive in each successive zone. Since a big part of the cost is allocated to the drying section, improved water removal in the wet end may lead to huge savings in the manufacturing process. LÄS MER

  5. 4. AKD sizing : dispersion colloidal stability, spreading and sizing with pre-flocculated dispersion

    Författare :Rosa Mattsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Sammanfattning : Alkylketene dimer, AKD, dispersions are used in the paper industry to obtain paper grades with a hydrophobic character i.e. resistance to sorption of water. AKD is used in neutral to alkaline internal sizing, pH in the interval of 6-9. LÄS MER