Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
권호 표지

Development of Recycled Paper Properties using In-Situ Process

In-Situ 공정(工程)을 이용한 재활용(再活用) 펄프의 물성특성(物性特性) 향상 연구(硏究)

  • Lee, Jong-Kyu (Korea Institute of Geoscience and Mineral Resource(KIGAM)) ;
  • Yoo, Kwang-Suk (Korea Institute of Geoscience and Mineral Resource(KIGAM)) ;
  • Nam, Seong-Yong (Korea Institute of Geoscience and Mineral Resource(KIGAM)) ;
  • Ah, Ji-Whan (Korea Institute of Geoscience and Mineral Resource(KIGAM))
  • Received : 2010.05.14
  • Accepted : 2010.06.18
  • Published : 2010.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

As the demand for paper continues to grow and the importance of recycled paper, white ledgar(WL) and old newspaper pulp(ONP), continuously increase. In addition, usage of recycled paper is essential in terms of forest conservation and environmental protection issues. However, optical and mechanical properties of recycled paper have some drawbacks than regular paper's properties that is indispensable. In order to complement these problems of recycled paper, precipitated calcium carbonate (PCC) was synthesized by the In-situ process with a recycled pulp. Depending on the size of PCC is divided into 2 types, $0.01{\mu}m{\sim}0.09{\mu}m$ colloid type ultra-fine particle and $0.1{\mu}m{\sim}0.9{\mu}m$ cubic type particles. In this study, we analyze how the different shape and size of precipitated calcium carbonate affects in the optical and mechanical properties of the recycled paper used as a filler. Furthermore, we mixed with chemical pulp for overcome reduce of mechanical properties, without using other chemicals, when we use PCC as a filler. The results has the possibility to meet in GR excellent recycling certification mark, standard was proposed.

종이에 대한 수요가 꾸준히 증가함에 따라 백상지 고지(White ledger)나 신문지 고지(Old newspaper pulp)등의 재활용지에 대한 중요성이 지속적으로 증가하고 있다. 또한 재활용지의 사용은 산림자원의 보호와 지구온난화 등의 환경문제 차원에서 더욱 부각되고 있다. 하지만 재활용지의 경우 종이에 필수적인 광학적 성질이 저하하고 기계적 성질이 감소하는 등 일반 종이에 비해 단점을 가지고 있다. 이러한 재활용지의 문제점을 보완하기 위해 입자 크기에 따라 $0.1{\mu}m{\sim}0.9{\mu}m$의 교질형 초미립자와 $0.1{\mu}m{\sim}0.9{\mu}m$의 입방형 미립자로 나눠지는 침강성 탄산칼슘을 In-situ 공정으로 재생펄프 표면에 합성하였다. 서로 다른 결정 형태와 크기가 다른 침강성탄산칼슘이 재활용지의 광학적 기계적 물성에 어떠한 영향을 주는지 연구하였다. 또한 화학펄프와의 혼합을 통해 침강성 탄산칼슘이 코팅된 재생펄프의 기계적 물성을 감소시키는 점을 보완하여 다른 첨가물에 전혀 의존하지 않고도 우수 재활용 인증마크인 GR규격을 만족하는지 알아보았다.

Keywords

References

  1. C. Domingo., 2005: Calcite precipitation by a high-pressure CO2 carbonation route, J. of Supercritical Fluids, 36(2006), pp. 202-215.
  2. Bo Feng., 2006: Effect of various factors on the particle size of calcium carbonate formed in a precipitation process, Materials Science and Engineering A, 445- 446(2007), pp170-179.
  3. M.G.A. Vieira., 2007: Drying conditions influence on physical properties of recycled paper, Chemical Engineering and Processing, 46(2007), pp955-963. https://doi.org/10.1016/j.cep.2007.06.006
  4. Teresa, G, 2004: Composting of de-inking sludge from the recycled paper manufacturing industry, Bioresource Technology, 96(2005), pp1161-1167.
  5. M. V. Dagaonkar., 2004: Synthesis of CaCo3 nanoparticles by carbonation of lime solutions in reverse Micellar systems, Chemical Engineering Research and Design, 82(A11), pp1438-1443. https://doi.org/10.1205/cerd.82.11.1438.52028
  6. Adams, R., 2009: Whiter than white - with optical brighter & without UV-Quenchers, Focus on pigments, 2009(8), pp1-3. https://doi.org/10.1016/S0969-6210(09)70124-9
  7. Huang, X.N., 2008: Study of adsorption kinetics for fluorescent whitening agent on fiber surfaces, Science in China series B: Chemistry, 51(5), pp473-478. https://doi.org/10.1007/s11426-008-0013-8
  8. Rupesh, K.P., 2005: Economic analysis of paper recycling vis-a'-vis wood as raw material, Int. J. Production Economics, 103(2006), pp489-508.
  9. Sinclair, W.F., 1990: Controlling pollution from Canadian pulp and paper manufactures: a federal perspective, Ottawa: Canadian Government Publishing Centre.
  10. Korea Paper Manufacture's Association (KPMA), 2008: Comparison of pulp and paper market between India and China, Public information (Downloadable from www.paper.or.kr).
  11. Vahasalo, L.J., Holmbom, B.R., 2006: White pitch deposition and styrene-butadiene -rubber binder content in paper mill process waters, Appita Journal, 59(4), pp280-284.
  12. N. WISTARA., 1999: Properties and treatments of pulps from recycled paper. Part II. Surface properties and crystallinity of fibers and fines, 2000 Kluwer Academic Publishers, Cellulose 6, pp325-348, Printed in the Netherlands.
  13. RUSHDAN. IBRAHIM., 2003: Structural, mechanical and optical properties of recycled paper blended with oil palm empty fruit bunch pulp, Journal of Oil Palm Research Vol. 15 No. 2, December 2003, pp28-34.