양이온성으로 표면 개질된 nanocoated GCC의 보류 성능 = Retention Performance of Nanocoated GCC with Positive Charge

다국어 초록 (Multilingual Abstract)

In this study, we investigated retention characteristics of nanocoated GCC that was positively modified by Layer-by-Layer (LbL) multilayering process. Three layers were formed onto GCC particles with poly-DADMAC/PSS/poly-DADMAC (PD3) and C-starch/A-PAM/C-starch (CS3) systems, respectively.

Untreated GCC, PD3 GCC (strongly positive charge) and CS3 GCC (weekly positive charge) were retained on pulp fibers under single retention system or microparticle retention system conditions. In single retention system, PD3 particles were not affected by cationic retention aid due to their strong positive charge, whereas CS3 particles reacted with cationic retention aid due to anionic sites on the surface of the weekly positive particles. In a microparticle retention system, positively modified GCC (PD3 and CS3) showed higher retention level than untreated GCC at the same dosage of retention aid. The cationic surface of GCC particles were more reacted with bentonite so the deposition onto pulp fibers was improved. In addition, the retention level of nanocoated GCC was increased with maintaining good formation.

참고문헌 (Reference)

1 최도침, "음이온성 PAM과 양이온성 전분으로 도포된 경질탄산칼슘에 의한 종이 강도 향상" 한국펄프·종이공학회 45 (45): 59-66, 2013

2 이학래, "양이온성 PAM과 양성전분에 의한 GCC의 선응집과 이들의 투입량과 전단속도가 선응집체의 크기에 미치는 영향" 한국펄프·종이공학회 38 (38): 1-9, 2006

3 이제곤, "고분자전해질의 LbL 흡착 처리에 의해 개질된 중질탄산칼슘의 특성 기초 연구" 한국펄프·종이공학회 43 (43): 35-42, 2011

4 Andersson, K., "The use of cationic starch and colloidal silica to improve the drainage characteristics of kraft pulps" 1 (1): 26-30, 1986

5 Seo, D., "The effects of process variables for GCC pre-flocculation on floc and handsheet properties" 27 (27): 382-387, 2012

6 Svedberg, A., "The effect of various retention aids on retention and formation" 25 (25): 195-203, 2010

7 Im, W., "Structure characterization of ground calcium carbonate flocs by fractal analysis and their effects on handsheet properties" 12 (12): 17-23, 2013

8 Yoon, S. Y., "Starch-fatty complex modified filler for papermaking" 5 (5): 3-9, 2006

9 Carré, B., "Starch and alumina/silica based compounds as a microparticulate retention aid system" 8 (8): 21-26, 1993

10 안정언, "Poly-DADMAC과 PSS의 분자량을 달리한 중질탄산칼슘의 개질과 종이 물성에 미치는 영향" 한국펄프·종이공학회 44 (44): 21-31, 2012

11 Hubbe, M. A., "Mechanistic aspects of microparticle systems" 4 (4): 23-28, 2005

12 Asselman, T., "Mechanism of polyacrylamide-bentonite microparticulate retention aids" 15 (15): 515-519, 2000

13 Svedberg, A., "Improvement of the retention-formation relationship using three-component retention aid systems" 27 (27): 86-92, 2012

14 Zhao, Y. L., "Improvement of paper properties using starch-modified precipitated calcium carbonate filler" 4 (4): 3-7, 2005

15 Ahn, J., "Improvement of paper properties through LbL (Layer-by-Layer) multilayering of ground calcium carbonate with polyelectrolytes combination" 117-124,

16 Krogerus, B., "Fillers and pigments, in Papermaking Chemistry, In Papermaking Science and Technology Ser. Vol. 4" Fapet Oy 119-, 1999

17 Mabee, S., "Filler flocculation technology - Increasing sheet filler content without loss in strength or runnability parameters" 797-810,

18 Bernier, J. F., "Experience of a microparticle retention aid system" 77 (77): 217-224, 1994

19 Lee, J., "Bonding between cellulose fibers and ground calcium carbonate with polyelectolyte multilayer" 143-149,

20 Brown, R., "A review of the influence of pigments on papermaking and coating" 1 : 83-138, 1997