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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korea Technical Association of The Pulp and Paper Industry
Journal Basic Information
Journal DOI :
Korea Technical Association of the Pulp and Paper Industry
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Volume & Issues
Volume 42, Issue 5 - Dec 2010
Volume 42, Issue 4 - Dec 2010
Volume 42, Issue 3 - Sep 2010
Volume 42, Issue 2 - Jun 2010
Volume 42, Issue 1 - Mar 2010
Selecting the target year
Properties of Natural Dyeing of Bast Fiber(Part 2) Pre mordanting dyeing of sappan wood, gardenia and gallnut
Park, Myung-Ox ; Yoon, Seung-Lak ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 1~14
To investigate natural dyeing properties of bast fiber, properties of pre mordanting dyeing of sappan wood, gardenia and gallnut such as K/S values, developed color, and fastness were evaluated. Silk showed the most increased K/S values by pre mordanting treatment when Fe was uses as a mordant. The optimized amount of Fe was 3%. The colors of sappan wood was a series of YR. After pre mordanting treatment with Fe, the colors of bast fiber of mulberry and silk showed a series of RP, and the color of cotton showed a series of Y. The color of gallnut was a series of Y regardless of pre mordant treatment. Sappon wood (YR), gardenia (Y), and gallnut (Y) showed various colors such as YR, R, and RP, respectively. Sunlight fastness was not improved by pre mordanting treatment. The effect of pre mordanting treatment was not good. Especially the treatment with Al showed poor sunlight fastness.
Effect of Humid Cycling Accelerated Aging on Deterioration of Duplicated Beeswax-Treated Volume
Choi, Kyoung-Hwa ; Park, Ji-Hee ; Jeong, Hye-Young ; Seo, Jin-Ho ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 15~24
Many efforts to understand the deterioration processes of the beeswax-treated volume of "The Annals of Joseon Dynasty" have been made. However, most previous studies have focused on individual sample sheet of the beeswax-treated paper but not book volume format. In this study, humid cycling accelerated aging for duplicated beeswax-treated book volume and Hanji book volume were carried out to examine differences in the deterioration of different parts of each volume as well as between the two book volumes during the aging. As results, it is found that the deterioration rate for the beeswax-treated volume is higher than that for the Hanji book volume. Different parts in each volume show different magnitude of deterioration. In particular, outer sides in both beeswax-treated and Hanji book volumes, which are directly exposed to the air, are deteriorated more seriously than inner sides. It is also observed that inner sides are considerably deteriorated during the aging, implying that inner deterioration may have different mechanisms from outer deterioration.
Effect of Wet Cleaning on the Property of Aged Duplicated Beeswax-Treated Paper
Choi, Kyoung-Hwa ; Park, Ji-Hee ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 25~32
The beeswax-treated volumes of the Annals of Joseon Dynasty, designated as a UNESCO's Memories of the World, have been more seriously damaged than the untreated ones. As a continuous effort to develop the optimal conservation techniques for the damaged beeswax-treated volumes of the Annals, this study examines the effectiveness of wet cleaning on the conservation of the beeswax-treated paper. To do this, wet cleaning is performed on the duplicated beeswax-treated paper and the Hanji that are aged at
for 30 days using distilled water of
. As results, it is observed that pH of the both the beeswax-treated paper and the Hanji increase, indicating the removal of the acid of the aged paper samples through wet cleaning. After the wet cleaning, however, the physical properties and viscosity of the Hanji decrease, while those of the beeswax-treated paper increase. It is also found that wet cleaning contributes to enhancement of most optical properties of the Hanji, but not for those of the beeswax-treated paper except for the
value. Analyses of UV absorbance of cleaning water demonstrate that both the beeswax-treated paper and the Hanji have typical spectra of chromophore compounds of cellulose.
Effect of filler loading on the wet end dewatering and paper properties
Won, Jong-Myoung ; Kim, Heung-Bae ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 33~38
The effects of fillers on the wet end dewatering and paper properties were investigated in order to confirm the possibility that the fillers can be used as a means for saving energy in papermaking process. The performance of GCC, PCC and talcs were evaluated. The dewatering in wire and wet press was improved by the increase of filler addition, but it was observed that the dewatering behavior was depended by the filler characteristics. PCC was superior to other fillers in the bulk, opacity, air permeability and stiffness while the lowest tensile and burst index were obtained. We found that the response on the wet end dewatering and paper properties were affected greatly by the filler characteristics including particle shape and size.
Effects of Refining and Kneading of Kraft Pulp Fibers on Elongation and Fracture Toughness of Paper
Lim, Jong-Hyck ; Chae, Hee-Jae ; Park, Chang-Soon ; Park, Jong-Moon ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 39~44
To increase the fracture toughness of paper made of Sw-BKP, refining and kneading conditions were analyzed. Curl and kink was known to increase the strain at break and the fracture touhness. Sequence of multiple stage beating, beating load and kneading were compared. When we applied a kneading treatment using a kneader at the final step, the most of the fiber transformation such as curl and kink occurred, the more the bulk and air-permeability improved. Physical strength and TEA(tensile energy absorption) were increased higher when kneading treatment before refining than only refining treatment was performed. TEA was increased because of higher elongation. It was found that the highest fracture toughness was obtained when applying the kneading treatment to the fibers in the pre-treatment step rather than in the middle step of beating or in the final step of beating.
Input-output Analysis for Pulp, Paper and Paper Product Industries
Kim, Chul-Hwan ; Moon, Ji-Min ; Kim, Eui-Gyeong ; Ahn, Byeong-Il ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 45~55
In order to investigate the structures and growth patterns of pulp and paper industries of Korea, the input-output tables of the year 1995, 2000, 2005 and 2007 were analyzed in this papers. The production inducement coefficients of these industries have grown during the designated period. In 2007, the value of production induced by pulp industry was estimated to be 343,8 billion won. Paper and paper product industries were estimated to induce the production of other industries by 7,281,6 and 8,515.9 billion won, respectively. The import inducement effect of pulp industry was estimated to be larger than that of paper and paper product industries. Analysis on the forward linkage effects indicated that paper and paper product industries were more sensitive to the change in demand of other industries than pulp industry.
Study of Preparation and Characterization of Microcrystalline cellulose from Miscanthus sinensis
Sung, Yong-Joo ; Lee, Young-Ju ; Lee, Joon-Woo ; Kim, Se-Bin ; Park, Gwan-Soo ; Shin, Soo-Jeong ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 56~63
Microcrystalline cellulose (MCC) was prepared from Miscanthus in this study. Two pulping methods, soda pulping and alkaline sulfite pulping were applied as a pretreatment process. After pulping, two different bleaching processes such as
treatment followed by
treatment followed by
treatment were carried out. Two concentration of
, 47% and 57% were applied to the purified Miscanthus cellulose as a acid hydrolysis process to make MCC. The crystallinity index and morphological properties of the produced MCC were evaluated with X-ray diffractometer and scanning electron microscopy. The MCC originated from the soda pulping sample showed the higher crystallinity index than that originated from the alkaline sulfite pulping sample. The two stages of treatmen twith
resulted in the higher purified cellulose products.
Isolation and Purification of Hemicelluloses in Alkali Pre-extractives from Mixed Hardwood
Sim, Kyu-Jeong ; Shin, Hee-Nae ; Youn, Hye-Jung ; Lee, Hak-Lae ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 64~70
In this study, hemicelluloses were pre-extracted from mixed hardwood chips using sodium hydroxide solution and then they were isolated from pre-extractives by using various solvents. Isolation was conducted by precipitating hemicelluloses with isopropanol, ethanol, 1,4-dioxane, dimethylsulfoxide (DMSO) and potassium hydroxide (KOH), respectively. The precipitate yield on alkali pre-extractives was the highest when hemicelluloses were isolated by DMSO and then precipitated with ethanol. Most precipitates were yellow colored. The efficiency of isolation was evaluated by analysing the characteristics of isolated hemicelluloses. Isolation using DMSO, KOH and 1,4-dioxane (
) showed rather high efficiency. The highest total separation efficiency was about 77% when alkali pre-extractives were reacted with KOH and precipitated with ethanol. The quantity and purity of isolated hemicelluloses were affected by the solvent type.
Interaction between Polyelectrolytes Layer-by-Layer Assembled Fibers and Fluorescent Whitening Agent
Sim, Kyu-Jeong ; Lee, Sung-Rin ; Chin, Seong-Min ; Ryu, Jae-Ho ; Youn, Hye-Jung ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 71~77
To utilize modified pulp fibers in papermaking system, it is necessary to evaluate the interaction between modified fibers and papermaking additives. Fluorescent whitening agent (FWA) is an important additive which has been widely used for production of writing and printing paper. We modified pulp fiber surface by Layer-by-Layer multilayering of polyelectrolytes, and investigated the interaction between these fibers and FWA used in internal addition or surface treatment. Pulp fiber with cationic surface charge showed a good affinity to internal FWA. For FWA in surface sizing agent, whiteness and brightness of paper was dependent on pickup weight and polyelectrolyte type. Pulp fibers with C-starch/PSS multilayer showed better optical properties than poly-DADMAC/PSS treatment. It indicated that polyelectrolyte type in Layer-by-Layer multilayering as well as a good affinity to FWA is important to get better whiteness and brightness.
Study on Fly Ash as a New Raw Material in Paperboard Process
Kim, Chul-Hwan ; Lee, Ji-Young ; Lee, Hui-Jin ; Gwak, Hye-Jeong ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 42, issue 4, 2010, Pages 78~83
In this study, the possibility of the use of a new raw material in paperboard industry was investigated. Fly ash is one of the residues generated in the combustion of coal and generally captured from the chimney of coal-fired power plant. This material is utilized in many industries including cement, soil stabilization, composite etc., but it is not used in paper industry. Three types of fly ashes were collected from Hadong, boryeong and Seocheon steam power plants and we investigated their properties by scanning electron micrographs and particle size distribution. Papers were manufactured with KOCC and fly ashes, and the physical properties such as bulk, tensile strength, internal bond strength and ISO brightness were measured to identify the effects of fly ash on the paper properties.