Improvements in the Physical Properties of Hanji by Using Red Algae Pulp

  • Seo, Yung-Bum (Chungnam National University, Coll. of Agri. and Life Sci., Dept. of Biobased materials) ;
  • Kim, Young-Wook (Chungnam National University, Coll. of Agri. and Life Sci., Dept. of Biobased materials) ;
  • Lee, Min-Woo (Chungnam National University, Coll. of Agri. and Life Sci., Dept. of Biobased materials) ;
  • Jung, Sun-Young (Chungnam National University, Coll. of Agri. and Life Sci., Dept. of Biobased materials)
  • 발행 : 2009.12.30

초록

Hanji is a traditional Korean handmade paper, made of bast fibers of the paper mulberry. Its fiber furnish is much more expensive than wood fiber furnish. Hanji with a low basis weight requires additional opacity and smoothness for better writing and printing. Filler such as calcium carbonate can not be used to raise the opacity of Hanji because of its low retention in low basis weight paper and the high freeness of the Hanji fiber furnish. Addition of red algae pulp, which is prepared from marine red algae to the Hanji fiber furnish negated retention problems happening in the case of mineral filler addition, and produced a substantial improvement in the opacity and smoothness of Hanji. The higher retention was due to the much larger size of the red algae fibers compared to the mineral fillers. The improvement in opacity and smoothness were also due to the shape of the red algae fibers: that red algae fibers are narrower in widths and shorter in lengths than wood fibers results in increased surface area and smoothness.

키워드

참고문헌

  1. Yung B. Seo, Chanho Choi, Yang Jeon, Effect of Traditional Hanji Manufacturing Process on Its Physical Properties, Journal of KTAPPI 33(4): pp.28-34, (2001)
  2. Chul Jun, Theory and Practice of Hanji manufacture, Onekwang Univ. Publishing Department, (1996)
  3. Hyung Gyun Cho, A study on the Internationalization of Indigenous Technology in Korea - Korea hand-made paper (Hanji), Report No. 95-04, Korea Science Foundation, (1996)
  4. Jong Soon Shin, An accelerated aging study on physico- chemical and kinetic aspects of paper permanence, Chungnam National Univ. Doctoral dissertation, (1991)
  5. Youn Woo Lee, The study of environment-friendly papermaking using red algae, Chungnam National Univ. Master's thesis, (2005)
  6. Young Se Lee, A study of manufacturing and property evaluation of red algae containing specialty paper, Chungnam National Univ. Doctorial Thesis, (2007)
  7. Korea Patent No. 10-0811183, (2008)
  8. W.K. Wilson, Accelerated aging of record papers compared with normal aging, TAPPI 38(9), pp.543, (1955)
  9. Kwi Bok Lee, The improvement of aged paper materials permanence through deacidification and strength reinforcement, Chungnam National Univ. Doctoral dissertation, (2006)
  10. Kyung Su Hyun, Min Jung Kim, Myoung Ku Lee, Printability Improvement of Hanji, Journal of KTAPPI 37(4): pp.52-59 (2005)