지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
Neutral or alkaline papermaking provides many advantages in paper strength and processing conditions. It also provides the opportunity of using calcium carbonate fillers in papermaking. These diverse advantages have made almost all paper machines of printing and writing papers run under neutral and alkaline conditions. On the other hand, linerboard machines, which use recycled papers as a raw material, are running under acid conditions using a rosin sizing system. Because the recycled raw materials used by the linerboard industry contain significant amounts of alkaline papers, the linerboard industry has an interest in the possibility of using the neutral or alkaline papermaking opportunity. In this study, the compatibility of the recycled linerboards under neutral or alkaline papermaking conditions was examined by recycling them under various pH conditions. The sizing degree of the papers recycled under neutral or alkaline was significantly lower than that of acid formed papers indicating that during the neutral or alkaline recycling process the rosin sized papers lost their sizing efficiency. Recycling of acid formed linerboards under neutral or alkaline conditions increased the amount of foam, and the foam contained substantial amount of solid materials derived from the acid sizing systems. Use of cationic polyelectrolytes including PEI and poly-DADMAC improved the sizing degree of the recycled papers under neutral and alkaline conditions. PEI decreased the foam generation as well while poly-DADMAC did not show any reducing effect of the foam. These results suggest that PEI forms coordinate bonds with rosin acid and precipitate them onto the surface of recycled fibers, while the reaction products between poly-DADMAC and rosin acid ions still remain water soluble under neutral or alkaline conditions.
목차
ABSTRACT
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
Literature Cited
참고문헌 (6)
참고문헌 신청
Lee, H. L., Fundamentals of rosin and alkalinesizing, J. KTAPPI, 21(1):32-38 (1989).
Marton, J., Fundmental aspects of the rosinsizing process, Nordic Pulp and Paper Res. J.,4(2):77-80 (1989).
Lee, H. L., and Lee, J. H., Development ofmulti-functional mulch papers and evaluationof their performance (part 3) -Defoamingtreatment during trial production of mulch papersand their influence on wet end system– J.KTAPPI, 32(3):25-31 (2000).
Kitaka, T., Isogai, A., and Onabe, F., Sizingmechanism of emulsion rosin size-alum system,Nordic Pulp and Paper Res. J., 10(4):253-260 (1995).
Gees, J. M., Rosin sizing of papermaking fibers,TAPPI J., 72(7):77-80 (1999).
Marton, J., Fundmental aspects of the rosinsizing process, Nordic Pulp and Paper Res. J.,4(2):77-80 (1989).
Lee, H. L., and Lee, J. H., Development ofmulti-functional mulch papers and evaluationof their performance (part 3) -Defoamingtreatment during trial production of mulch papersand their influence on wet end system– J.KTAPPI, 32(3):25-31 (2000).
Kitaka, T., Isogai, A., and Onabe, F., Sizingmechanism of emulsion rosin size-alum system,Nordic Pulp and Paper Res. J., 10(4):253-260 (1995).
Gees, J. M., Rosin sizing of papermaking fibers,TAPPI J., 72(7):77-80 (1999).
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UCI(KEPA) : I410-ECN-0101-2016-586-002909102