1975 TAPPI Coating Conference

Kadoya, Takashi

doi:10.2524/jtappij.30.11

Cited by 3 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where r = pore radius γ = mercury surface tension θ = contact angle p = absolute applied pressure in kg/cm 2 NB The contact angle of mercury has been measured for a range of different solids and varies between 125° and 152°. The average of 141.3° is usually used, although a value of 140° was used by Larrondo et al [240]. The surface tension of the mercury is taken as 480 mNm −1 .…”

Section: Mercury Porosimetrymentioning

confidence: 99%

Review: The Surface Analysis of Paper

Preston

2009

Trans. Of the XIVth Fund. Res. Symp. Oxford, 2009

View full text Add to dashboard Cite

Contents 1 Introduction 2 Chemical structure 2.1 Infra Red (IR) spectroscopy 2.1.1 Attenuated Total Reflectance IR (ATR-IR) 2.1.2 Photo Acoustic Spectroscopy (PAS) 2.1.3 Examples of uses of IR spectroscopy in paper 2.2 Raman spectroscopy 2.2.1 Variants of Raman spectroscopy and examples of use in paper 2.3 X-Ray Photoelectron Spectroscopy (XPS) 2.3.1 Depth profiling 2.3.2 Use of XPS for fibres 2.3.3 Use of XPS in determining failure at interfaces 2.3.4 The use of XPS to determine surface chemistry of coatings 2.3.5 XPS for analysis of paper surface treatments 2.4 Secondary Ion Mass Spectrometry (SIMS) 2.4.1 Applications of SIMS in paper 2.5 UV analysis of surface binder content 3 Electron microscopy 3.1 Scanning Electron Microscopy (SEM) 3.1.1 Examples of SEM use in paper 3.1.2 SEM for topography analysis 3.1.3 Staining and cross sections 3.1.4 SEM and Image analysis 3.1.5 Dispersive X-Ray analysis EDX on SEM 3.2 Transmission Electron Microscopy (TEM) 4 Paper topography 4.1 Air leak methods 4.2 Profilometry & interferometry 14th Fundamental Research Symposium, Oxford

show abstract

Section: Mercury Porosimetrymentioning

confidence: 99%

Review: The Surface Analysis of Paper

Preston

2009

Trans. Of the XIVth Fund. Res. Symp. Oxford, 2009

View full text Add to dashboard Cite

show abstract

“…Electron microscopy [7,[12][13][14] The weaknesses of electron microscopy in this context are: (i) it can be difficult to identify binder in the coating image; (ii) selecting a representative field of view is a difficult problem in microscopy; and (iii) quantitative assessment of binder level is difficult, although modern image analysis makes this feasible provided unambiguous identification of the binder can be made. [15][16][17] XPS is a sophisticated technique which measures surface elemental composition by detecting and characterising photoelectrons emitted as a result of an X-Ray beam being directed at the sample.…”

Section: Pyrolysis Gas Chromatographymentioning

confidence: 99%

“…We propose, however, that such changes do not occur, and this postulate is supported by our model described below. Previous workers have also used thick samples, for example Vanderhoff and Bradford [7] dried samples of low-solids polystyrene dispersions in 15-mm deep petri dishes, implying the use of thick sample, and Bernada and Bruneau [8] used 1-cm thick coatings to study drying and starch migration.…”

Section: Introductionmentioning

confidence: 99%

Binder Migration in Paper Coatings – A New Perspective

Groves,

Matthews,

Heap

et al. 2001

Trans. Of the XIIth Fund. Res. Symp. Oxford, 2001

View full text Add to dashboard Cite

Clay or other minerals are coated onto fibrous paper to improve print and optical properties. The minerals are fixed to the fibrous substrate with a binder, either latex or starch. The coated paper is dried during manufacture, and if the binder migrates during this drying, there can be a deterioration in properties. Not only are there manufacturing considerations as to the choice of binder, but also environmental ones with regard to factors such as the energy used in drying. This work reveals new perspectives on binder migration which have been gained by a variety of approaches. Firstly, a critique is presented of the experimental methods which have been used by other workers. Then a comprehensive series of experiments is described. For ease of study, and because any effects are likely to be exaggerated, most of the experiments were carried out on samples which were 1.4 mm thick, some two orders of magnitude thicker than commercial coatings. However, the results were also replicated in less extensive tests on samples of thickness 55 μm. The experiments show that under a very wide range of conditions, including different coating thicknesses and drying temperatures, no latex migration is observed. Migration of starch was observed, however, and caused an increase in starch concentration at the surface during drying. If the sample was covered during the experiments, the system relaxed back and the concentration enhancement was reduced. The relationship between the particle size of the latex and starch, and the extent to which these particles might percolate through the void structures, was investigated by the application of the “Pore-Cor” software to mercury intrusion experiments. Also presented are the results of a mathematical continuum model, which accurately describes the migration of starch binder in terms of only two parameters, namely the evaporation efficiency and the diffusion coefficient of starch.

show abstract

“…There are two major factors decreasing the water transport in this case, firstly the viscosity of the liquid, and secondly the building up of a thin filter cake in the case of pi ment coatings . The filter cake will be the most important factor for the pressure drop (40 ) . During the dwell time, the only driving force is the capillary pressure, and the penetration will then follow the curve for zero pressure .…”

Section: The Blade 853mentioning

confidence: 99%

“…The amount of research on the mechanism of surface sizing in the size press is relatively limited (57)(58)(59)(60)(61)(62)(63)(64) . One of the most extensive studies has been made by Hoyland et al .…”

Section: Surface Size Uptake In the Size Pressmentioning

confidence: 99%

Review of Surface Application

Eklund

1989

Trans. Of the IXth Fund. Res. Symp. Cambridge, 1989

View full text Add to dashboard Cite

Surface application has gained more and more popularity as a means of increasing the quality of paper and board. In its broadest sense, surface application covers everything from sur face-sizing to extrusion coating, but this review will concentrate on surface sizing and pigment coating, i.e. processes taking place as an integrated part of the paper manufacture. Because the goals of the surface treatmant are different and depending on the quality of the paper desired, the review will cover our present fundamental understanding of the processes themselves. The presentation will start with a description of the water or liquid penetration in paper. Then the mechanics of various blade coating processes and the liquid transport it blade coaters will be explained. Last will come a presentation of the size press and new equipment for surface sizing.

show abstract

1975 TAPPI Coating Conference

Cited by 3 publications

References 0 publications

Review: The Surface Analysis of Paper

Review: The Surface Analysis of Paper

Binder Migration in Paper Coatings – A New Perspective

Review of Surface Application

Contact Info

Product

Resources

About