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학술대회자료
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한국펄프·종이공학회 한국펄프종이학회 기타 간행물 2006 PAN PACIFIC CONFERENCE Proceedings Vol.1
발행연도
2006.6
수록면
79 - 84 (6page)

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In order to improve filler-fiber bonding in paper, starch-filler composites were prepared by a starch-fatty acid complex formation method. These composites were used as a papermaking filler to improve the physical properties of the paper, filler retention, and the sizing effect. The solubility of the starch-fatty acid complex in water at different temperatures was measured. The results indicated that the starch-fatty acid complexes have very low solubility in water below 70℃, which can be easily coated on clay surface to modify clay-fiber bonding ability. The clay-starch composite filled handsheets showed that paper strength could increase more than 100~200% compared to untreated clay. It was found that ZDT of the handsheet decreased as the clay content increased when unmodified clay was used, but it increased when the starch-fatty acid composite modified filler was used. It was also found that the presence of fatty acids in the complex increased the water-repellant property of the handsheet, which can be used to aid in sizing during papermaking. Filler distribution and bonding characteristics between the composite and fiber were investigated using Scanning Electron Microscopy (SEM).

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RESULTS AND DISCUSSION
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