Comparison of NMR cryoporometry, mercury intrusion porosimetry, and DSC thermoporosimetry in characterizing pore size distributions of compressed finely ground calcium carbonate structures

被引:133
作者
Gane, PAC
Ridgway, CJ [1 ]
Lehtinen, E
Valiullin, R
Furó, I
Schoelkopf, J
Paulapuro, H
Daicic, J
机构
[1] Omya Dev AG, CH-4665 Oftringen, Switzerland
[2] Aalto Univ, FI-02015 Helsinki, Finland
[3] Royal Inst Technol, KTH, SE-10044 Stockholm, Sweden
[4] YKI, Inst Surface Chem, SE-11486 Stockholm, Sweden
关键词
D O I
10.1021/ie049448p
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This work investigates for the first time how mercury intrusion porosimetry (MIP), NMR-based cryoporometry, and DSC-based thermoporosimetry compare in revealing the porous characteristics of ground calcium carbonate structures compacted over a range of pressures. The comparison is made using the same source samples throughout. MIP, a much-used method in the characterization of porous structures, has the drawback that the high pressure needed to intrude the mercury may either distort the skeletal porous structure of the sample, especially when compressible materials such as cellulose or binders/latex are present, or lead to a reduction in the measured number of large pores due to the shielding by smaller pores. These effects have previously been addressed using bulk modulus corrections and by modeling the structure permeability to account for the potential shielding. Cryoporometry gives detailed information about the pore size distribution of an imbibition saturated structure. Thermoporosimetry is a relatively new candidate in this field, and it yields both pore size distribution and pore volume. Currently it is somewhat limited in the pore size range detectable, but it is relevant to pigmented coatings. Its potential is identified for capturing the pores involved in the progress of imbibition before saturation is reached.
引用
收藏
页码:7920 / 7927
页数:8
相关论文
共 33 条
[1]  
Abrams L, 1996, P TECH AS P, P185
[2]   Determination and characterization of the structure of a pore space from 3D volume images [J].
Baldwin, CA ;
Sederman, AJ ;
Mantle, MD ;
Alexander, P ;
Gladden, LF .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 181 (01) :79-92
[3]  
BODURTHA PA, 2001, 2001 ADV COAT FUND S, P393
[4]   On the flow of liquids into capillary tubes. [J].
Bosanquet, CH .
PHILOSOPHICAL MAGAZINE, 1923, 45 (267) :525-531
[5]   EFFECTS OF DIFFUSION ON FREE PRECESSION IN NUCLEAR MAGNETIC RESONANCE EXPERIMENTS [J].
CARR, HY ;
PURCELL, EM .
PHYSICAL REVIEW, 1954, 94 (03) :630-638
[6]   Study of penetration of water into hydrophobized porous silicas [J].
Fadeev, AY ;
Eroshenko, VA .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1997, 187 (02) :275-282
[7]   NMR cryoporometry:: A novel method for the investigation of the pore structure of paper and paper coatings [J].
Furó, I ;
Daicic, J .
NORDIC PULP & PAPER RESEARCH JOURNAL, 1999, 14 (03) :221-225
[8]   Void space structure of compressible polymer spheres and consolidated calcium carbonate paper-coating formulations [J].
Gane, PA ;
Kettle, JP ;
Matthews, GP ;
Ridgway, CJ .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (05) :1753-1764
[9]  
Gane PAC, 2000, TAPPI J, V83, P77
[10]  
Goel A, 2001, TAPPI J, V84, P72