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Interaction of nanoparticle chemistry, starch yields better groundwood grade runnability

Pulp & Paper, 2004-02, Vol.78 (2), p.34-36

Copyright Paperloop, Inc. Feb 2004 ;ISSN: 0033-4081 ;CODEN: PUPAA8

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  • Title:
    Interaction of nanoparticle chemistry, starch yields better groundwood grade runnability
  • Author: Carr, D.S
  • Subjects: Chemical engineering ; Drainage ; Nanoparticles ; Nanotechnology ; Production controls ; Production increases ; Pulp & paper industry ; Retention ; thermomechanical pulping ; wood pulp
  • Is Part Of: Pulp & Paper, 2004-02, Vol.78 (2), p.34-36
  • Description: This is the first part of a two-part article examining the effects of nanoparticle chemistry technology on groundwood grades, particularly as it pertains to such issues as machine runnability and product characteristics. Fines and extractives influence drainage, runnability, drying, and dry strength of wood-containing sheets, especially on gap formers using silica-based nanoparticle systems. The challenge is to enhance the effects of fines on strength and runnability, yet minimize the effects of the extractives. Silica-based microparticle systems enhance retention, dewatering, and strength. Dewatering benefits occur at the wet end and in the press section and driers, creating opportunities for increased production. Strength benefits occur at the reel and on the paper machine, with improved wet web strength enhancing runnability. As microparticle technology has developed, anionic trash catchers and blocking agents have become more important. Surface-modified, structured silica nanoparticles with high surface area have found recent acceptance in both acid and neutral wood-containing grades.
  • Publisher: San Francisco: RISI, Inc
  • Language: English
  • Identifier: ISSN: 0033-4081
    CODEN: PUPAA8
  • Source: ProQuest Central
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