Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Improvement of Paper Strength using Pretreated Precipitated Calcium Carbonate (PCC)

종이의 강도향상을 위한 경질탄산칼슘(PCC) 전처리에 대한 연구

  • Kim, Chul-Hwan (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Lee, Ji-Young (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Gwak, Hye-Joeng (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Chung, Ho-Kyung (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Back, Kyung-Kil (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Lee, Hui-Jin (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Kim, Sung-Ho (Dept. of Forest Products/IALS, Gyeongsang National Univ.) ;
  • Kang, Ha-Ryoun (Dept. of Forest Products/IALS, Gyeongsang National Univ.)
  • 김철환 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 이지영 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 곽혜정 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 정호경 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 백경길 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 이희진 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 김성호 (경상대학교 임산공학과/농업생명과학연구원) ;
  • 강하륜 (경상대학교 임산공학과/농업생명과학연구원)
  • Received : 2010.02.16
  • Accepted : 2010.03.15
  • Published : 2010.03.30
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Abstract

Increasing ash content of the paper is one of the most effective methods for saving raw materials and steam consumption and improving optical properties and better print quality. However, the increase of filler loading or filler content using a conventional wet end system is limited due to severe loss in strength properties, affecting runnability and product quality. This is because the filler has no ability to make bonding with cellulosic fibers. Therefore, if the technology to give filler the bonding ability is developed, the ash content of the paper can be increased more than ever. This study was carried out to modify PCC by coating its surface with starch contributing to better bonding with fibers. To prepare the modified PCC, cationic starch was selected as a polymer and then pretreatment was done by mixing PCC and cationic starch. Consequently, the pretreated PCC contributed to higher tensile strength, stiffness and opacity than the conventional filler, such as GCC and untreated PCC. However, CIE whiteness and ISO brightness decreased slightly compared to conventional fillers.

Keywords

References

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