The influence of paper surface energy on multicolor offset print mottling

An evaluation of a series of commercial uncoated, semimatte, and glossy coated woodfree papers for the multicolor sheet-fed offset press is presented. This study is aimed at better understanding of mutual influences of surface free energy, paper surface roughness, and fountain solution on print mottling occurring in full-scale printing conditions. Each paper has unique structure in terms of surface roughness, porosity, and surface energy that are the result of manufacturing technology. At the point of contact of liquid with paper, the surface dynamic process of liquid absorption by paper occurs, involving phenomena such as wetting, penetration, diffusion, and swelling. Mottling of colored surface printed by cyan, magenta, yellow, and black inks copied the surface roughness of coated paper. Mottling in the second, third, and fourth printing units showed deviation from mottling in the first printing unit, depending on surface free energy of paper and on the frequency of paper-surface wetting by fountain solution before and after printing.

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Examination of the lubricant storing and releasing ability of thermally sprayed surfaces

International Review of Applied Sciences and Engineering ◽

10.1556/irase.2.2011.2.4 ◽

2011 ◽

Vol 2 (2) ◽

pp. 101-105

Author(s):

L. Fazekas ◽

Z. S. Tiba ◽

G. Kalácska

Keyword(s):

Free Energy ◽

Surface Energy ◽

Surface Free Energy ◽

Essential Role ◽

Index Number ◽

Adhesion Ability ◽

Thermally Sprayed ◽

Proper Operation

Abstract The lubricant storing and releasing ability of the thermally sprayed surfaces plays an essential role in the proper operation of the components. In the case of porous sprayed surfaces the lubricant storing and releasing ability depends mainly on porosity and the surface energy (adhesion susceptibility). The adhesion ability can also be expressed indirectly with an index number that is by determining the surface free energy.

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Analysis of surface roughness and surface free energy characteristics of various orthodontic materials

American Journal of Orthodontics and Dentofacial Orthopedics ◽

10.1016/j.ajodo.2007.11.032 ◽

2009 ◽

Vol 136 (5) ◽

pp. 668-674 ◽

Cited By ~ 15

Author(s):

Hyo-Beom Ahn ◽

Sug-Joon Ahn ◽

Shin-Jae Lee ◽

Tae-Woo Kim ◽

Dong-Seok Nahm

Keyword(s):

Surface Roughness ◽

Free Energy ◽

Surface Free Energy ◽

Energy Characteristics ◽

Orthodontic Materials

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Insights into graphene wettability transparency by locally probing its surface free energy

Nanoscale ◽

10.1039/c9nr00155g ◽

2019 ◽

Vol 11 (16) ◽

pp. 7944-7951 ◽

Cited By ~ 8

Author(s):

Jin-You Lu ◽

Tuza Olukan ◽

Srinivasa Reddy Tamalampudi ◽

Abdulrahman Al-Hagri ◽

Chia-Yun Lai ◽

...

Keyword(s):

Free Energy ◽

Chemical Vapor Deposition ◽

Surface Energy ◽

Surface Free Energy ◽

Vapor Deposition ◽

Chemical Vapor ◽

Multilayer Graphene ◽

Natural Graphite

In this work, we study the surface energy of monolayer, bilayer and multilayer graphene coatings, produced through exfoliation of natural graphite flakes and chemical vapor deposition.

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Surface Free Energy Change of UV Exposed Composites and Coatings via Acid-Base Interactions

Volume 3: Design and Manufacturing ◽

10.1115/imece2011-62756 ◽

2011 ◽

Author(s):

R. Asmatulu ◽

M. Ghaddar

Keyword(s):

Free Energy ◽

Service Life ◽

Surface Energy ◽

Surface Free Energy ◽

Uv Light ◽

Free Energy Change ◽

Energy Change ◽

Acid Base ◽

Coating Materials ◽

Base Interaction

Surface free energy of composite and coatings are critically important for the performance of the materials since the change in surface free energies can drastically affect the physical, chemical and physicochemical properties, and hence the service life of them. The characterization of the surface free energy is the key issue to understand the mechanisms of the surface degradation. Acid-base interaction is one way of determining the surface free energy change on these surfaces. In the present study, we exposed composite and coating surfaces to UV light, and then measured the contact angle values using various liquids (e.g., DI water, diiodomethane and glycerol). Using the van Oss approach, we calculated the surface energy changes of the surfaces exposed to the UV light. We found that the surface energy, acidity and basicity of the composite and coating materials were drastically changed as a function of UV exposure time. This study can be useful for the moisture uptake of composites, composite degradation, aging and service life of these products.

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Investigation of Template Releasing Energy in Nanoimprint Lithography

MRS Proceedings ◽

10.1557/opl.2013.412 ◽

2013 ◽

Vol 1499 ◽

Author(s):

Tomoki Nishino ◽

Norihiro Fujikawa ◽

Hiroaki Kawata ◽

Yoshihiko Hirai

Keyword(s):

Free Energy ◽

Surface Energy ◽

Surface Free Energy ◽

Nanoimprint Lithography ◽

Perpendicular Direction ◽

Single Side ◽

Lift Off ◽

Releasing Process

ABSTRACTTo investigate template releasing process in nanoimprint lithography, template releasing energy (i.e. surface energy between the template and the resist polymer) in various releasing conditions is evaluated using multi-axial controlled releasing system. The releasing energy is in proportion to the surface free energy of the template, but does not depend on the velocity of releasing. Also, a peeling mode where the template is released from a single side and a lift-off mode where the template is removed in the perpendicular direction to the resist are examined. The result shows that the releasing energy by peeling mode is lower than that by lift-off modes.

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The specific energy of crystal boundaries in tin

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1950.0054 ◽

1950 ◽

Vol 201 (1065) ◽

pp. 210-215 ◽

Cited By ~ 27

Keyword(s):

Free Energy ◽

Surface Energy ◽

Specific Surface ◽

Surface Free Energy ◽

Specific Energy ◽

Lattice Theory ◽

Strong Support ◽

Crystal Boundary ◽

The Difference ◽

Crystal Boundaries

Specimens of tin, consisting of three crystals of predetermined orientations, were prepared with various differences of orientation between two of the crystals. The equilibrium angles between the three boundaries were measured. Relative values of specific surface free energy were deduced from the angles, and it was found that the surface energy decreases progressively as the difference of orientation decreases below about 6°. The curve relating surface energy with differences of orientation extrapolates to zero surface energy at zero angle. The result is considered to provide strong support for the ‘transitional lattice’ theory of the crystal boundary.

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Investigation into Coating Surface Free Energy and Microstructure of Coated Paper Related to Pigment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.884-885.212 ◽

2014 ◽

Vol 884-885 ◽

pp. 212-215

Author(s):

Ying Li ◽

Wen Juan Gu ◽

Bang Gui He

Keyword(s):

Free Energy ◽

Calcium Carbonate ◽

Surface Free Energy ◽

Coating Layer ◽

Physical Structure ◽

Coated Paper ◽

Paper Surface ◽

Pigment Coating ◽

Printing Ink ◽

Better Than

The physical structure of coating layer have an important influence on transferring and setting of the printing ink. In this study, the effect of pigment on surface microstructure and surface free energy was investigated. The findings indicated that the pigment affected the pore size, depth and distribution of the coated paper surface. Kaolin pigment compared with calcium carbonate pigment was good to improve the paper surface smoothness. Surface free energy of kaolin pigment coating was higher than calcium carbonate pigment coating, which showed that surface wettability of coating with kaolin pigment was better than calcium carbonate pigment.

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