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Sizing Mechanism of Emulsion Rosin-Aluminium lon Systems

Research Project

Project/Area Number 05806023
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 林産学
Research InstitutionThe University of Tokyo

Principal Investigator

ISOGAI Akira (1994)  The University of Tokyo Faculty of Agriculture Associate Professor, 農学部, 助教授 (40191879)

磯貝 明 (1993)  東京大学, 農学部, 助教授 (01918179)

Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsPulp / Paper / Size / Rosin / Aluminium / Water-repellency / Retention / Pyrolysis-gas chromatography / アラム / 硫酸アルミニウム / セルラーゼ
Research Abstract

The goal of this research was to clarify two mechanisms of internal sizing treatments in paper-making process ; retention mechanism of the anionic emulsion-rosin size/aluminium sulfate system in wet-end and its sizing mechanism of size components retained in sheet, and the following results were obtained.
First, the methods for determining small amounts of size and aluminium components in sheets were established uisng pyrolysis-gas chromatography and other analytical apparatus. it was found using the above methods of paper-sheets that aluminium ions added to paper stodck immediately formed ionic linkages with dissociated carboxyl groups in pulp fibers. Thus, the cationic sites of pulp surfaces formed at the Pulp-COOAI can adsorb anionic rosin emulsions by inonic interactions. When pH of the paper stock increased by the addition of an alkaline solution, the ionic linkages, Pulp-COO-AI-Rosin emulsion, were cleaved by decomposition of rosin emulsions and other reasons. Therefore, the retention mechanism of emulsion rosin size/aluminium ion system in wet-end is governed by the immediate formation of ionic linkages at the carboxyl groups in pulp fibers.
Next, the properties and chemical structures of size components retained in sheets were studied to elucidate the sizing mechanism of this system. The following analytical techniques were used ; 1) analyzes of cellulase-treated residues of paper-sheets, 2) extractions of paper-sheets with organic solvents, and 3) solid-state 13C-NMR analyzes of paper-sheets prepared with 13C-labled fatty acids used as model compounds of rosin size. The results showed that rosin molecules exsited in sheet as free acid without forming aluminium salts. Furthermore, aluminium ions retained in sheets essmed to govern the distribution patterns or mapping structures of hydrophobic rosin size components on pulp fiber surfaces.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] TANIGUCHI, R. et al.: "Sizing Mechanism of Alkylketene Dimers, Part 3. Appearance of Sizing Features of AKD-Sized Sheets" Nordic Pulp & Paper Research Journal. 8(4). 352-357 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] ISOGAI, A. et al.: "Sizing Mechanism of Alkylketene Dimers, Part 4. Roles of AKD and Ketones on AKD-Sizing" Nordic Pulp & Paper Research Journal. 9(1). 44-48 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] KITAOKA, T. et al.: "Sulfate Ion in Acidic Paper" Mokuzai Gakkaishi. 40(5). 563-564 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] OKOMORI, K. et al.: "Basic Properties of Handsheets containing Starch Pulp" Nordic Pulp & Paper Research Journal. 9(4). 237-241 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 磯貝 明: "紙のサイズ発現機構に関する考察(I)" 紙パルプ技術協会誌. 48(2). 271-287 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 磯貝 明: "紙のサイズ発現機構に関する考察(II)" 紙パルプ技術協会誌. 48(3). 424-436 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] TANIGUCHI,R.et al.: "Sizing Mechanism of Alkylketene Dimers, Part 3. Appearance of Sizing Features of AKD-Sized Sheets" Nordic Pulp & Paper Research J.8 (4). 352-357 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] ISOGAI,A.et al.: "Sizing Mechanism of Alkylketene Dimers, Part 4. Roles of AKD and Ketones on AKD-Sizing" Nordic Pulp & Paper Research J.9 (1). 44-48 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] KITAOKA,T.et al.: "Sulfate lon in Acidic Paper" Mokuzai Gakkaishi. 40 (5). 563-564 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] OKOMORI,K.et al.: "Basic Properties of Handsheets containing Starch Pulp" Nordic Pulp & Paper Research J.9 (4). 237-241 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] ISOGAI,A.: "Consideration of Paper Sizing (I)" J.Japan Tappi. 48 (2). 271-287 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] ISOGAI,A.: "Consideration of Paper Sizing (II)" J.Japan Tappi. 48 (3). 424-436 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] TANIGUCHI,R.et al.: "Sizing Mechanism of Alkylketene Dimers,Part 3." Nordic Pulp & Paper Research Journal. 8(4). 352-357 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] ISOGAI,A.et al.: "Sizing Mechanism of Alkylketene Dimers,Part 4." Nordic Pulp & Paper Research Journal. 9(1). 44-48 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] KITAOKA,T.et al.: "Sulfate Ion in Acidic Paper" Mokuzai Gakkaishi. 40(5). 563-564 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] OKOMORI,K.et al.: "Basic Properties of Handsheets containing Starch Pulp" Nordic Pulp & Paper Research Journal. 9(4). 237-241 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 磯貝 明: "紙のサイズ発現機構に関する考察(I)" 紙パルプ技術協会誌. 48(2). 271-287 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 磯貝 明: "紙のサイズ発現機構に関する考察(II)" 紙パルプ技術協会誌. 48(3). 424-436 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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