Wood-Based New Functional Materials “MinerPa<sup>®</sup>”

Bibliographic Information

Other Title
  • 木からつくるアラタナカタチ「ミネルパ<sup>®</sup>」
  • 木からつくるアラタナカタチ「ミネルパ」 : 無機物とパルプ繊維の複合体の開発
  • キ カラ ツクル アラタナカタチ 「 ミネルパ 」 : ムキブツ ト パルプ センイ ノ フクゴウタイ ノ カイハツ
  • —Development of Mineral Particles/Pulp Fibers Composites—
  • —無機物とパルプ繊維の複合体の開発—

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Abstract

<p>One of the useful approaches to functionalize paper is hybridizations of inorganic fillers and pulp fibers. By adopting a unique pulp-modification technology, Nippon Paper Industries have developed composites of mineral particles and pulp fibers, named as “MinerPa®” which are wood-based functional materials. Herein, we will report some practical examples of using MinerPa® which we have conducted;preparations and evaluations of papermaking adequacy and functionalities in sheet.</p><p>Each composites of calcium dioxide (CaCO3), Barium sulfate (BaSO4) or hydrotalcite was individually prepared by in-situ reaction under existence of pulp fibers in water. Scanning electron microscopy(SEM) observation showed that the surface of pulp fiber was densely covered with inorganic particles, which was observed at three composites. By using obtained composites as raw materials, a papermaking process was conducted to evaluate its practical usage by using a machine. A sheet of BaSO4/pulp composites was continuously producible and made with remarkably high first-pass retention (97.0%) and first-pass ash retention (96.5%) despite of its high ash content (over 65%). Further investigation of a sheet of BaSO4/or hydrotalcite/pulp composites was conducted to evaluate its functionality. Each composite sheet showed a characteristic function attributed to inorganic particles loaded on pulp fibers. A sheet of BaSO4/pulp composites showed an X-ray shielding properties, and a sheet of hydrotalcite/pulp composites revealed to have a high deodorant and anti-bacterial performance.</p><p>These results suggest that MinerPa® would provide a new functional material based on wood-based resources, which will be considered to contribute to protect global environment or ecosystem and facilitate using sustainable resources.</p>

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 75 (11), 1001-1004, 2021

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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