Multicycle Wilhelmy Plate Method for Wetting Properties, Swelling and Liquid Sorption of Wood

Langmuir ◽  
2013 ◽  
Vol 29 (39) ◽  
pp. 12145-12153 ◽  
Author(s):  
Maziar Sedighi Moghaddam ◽  
Magnus E.P. Wålinder ◽  
Per M. Claesson ◽  
Agne Swerin
Keyword(s):  
Plate Method ◽  
Wetting Properties ◽  
Wilhelmy Plate ◽  
Wilhelmy Plate Method

scholarly journals Wettability of welded wood-joints investigated by the Wilhelmy method: part 2. Effect of wollastonite additive

Holzforschung ◽  
2021 ◽  
Vol 75 (1) ◽  
pp. 79-86
Author(s):  
Mojgan Vaziri ◽  
Olov Karlsson ◽  
Lars Abrahamsson ◽  
Maziar Sedighi Moghaddam ◽  
Dick Sandberg
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Welded Joints ◽  
High Performance ◽  
Welded Joint ◽  
Gas Chromatography Mass Spectrometry ◽  
Plate Method ◽  
Wetting Properties ◽  
Wilhelmy Plate ◽  
Wilhelmy Plate Method

AbstractThe effect of wollastonite on the wetting properties of welded Scots pine-joints was studied using the multicycle Wilhelmy plate method and by observation of the chemical composition of the welded joints. Welding pine with wollastonite for 5 s resulted in a decrease in the water uptake and the swelling, and an increase in the contact angle of the welded joint compared to welded wood without wollastonite. High-performance liquid chromatography and gas chromatography/mass spectrometry showed the presence of dehydration products such as furfural, 5-hydroxymethylfurfural, and levoglucosan in methanol extracts from welded joints of specimens welded with and without wollastonite. Phenols were also found by analysis using the Folin-Ciocalteu method and High-performance liquid chromatography. The importance of such compounds in relation to the wetting properties of the welded joint is discussed.

Wettability measurements of irregular shapes with Wilhelmy plate method

2018 ◽  
Vol 427 ◽  
pp. 273-280 ◽  
Author(s):  
Jaehyung Park ◽  
Ugur Pasaogullari ◽  
Leonard Bonville
Keyword(s):  
Plate Method ◽  
Irregular Shapes ◽  
Wilhelmy Plate ◽  
Wilhelmy Plate Method

Measurement of Surface Tension of Homogenised Milks

2005 ◽  
Vol 1 (2) ◽  
Author(s):  
Niloshree Mukherjee ◽  
Bipan Bansal ◽  
Xiao Dong Chen
Keyword(s):  
Surface Tension ◽  
Capillary Rise ◽  
Milk Proteins ◽  
Active Components ◽  
Plate Method ◽  
Capillary Rise Method ◽  
Inverse Effect ◽  
Wilhelmy Plate ◽  
Surface Active ◽  
Wilhelmy Plate Method

Surface tension of different homogenized milk and cream, available in New Zealand, has been measured using the ‘Capillary Rise’ method as well as the automated ‘Wilhelmy Plate’ method. The measured values are slightly higher than the values reported in the literature. Increasing the fat content is found to have an inverse effect on the surface tension. This effect diminishes progressively for fat concentrations beyond 30%. Milk proteins, reported in the literature as surface-active components, are observed to have no effect on the surface tension.

Milks and Milk Concentrates: Surface Tension Measurement

2005 ◽  
Vol 1 (1) ◽  
Author(s):  
Anna M Williams ◽  
J.R. Jones ◽  
A.H.J. Paterson ◽  
D.L. Pearce
Keyword(s):  
Surface Tension ◽  
Spray Drying ◽  
Skim Milk ◽  
Fat Content ◽  
Surface Tension Measurement ◽  
Plate Method ◽  
Solids Concentration ◽  
Whole Milk ◽  
Wilhelmy Plate ◽  
Wilhelmy Plate Method

Surface tension is an important property of milk concentrates because it affects atomisation in spray drying. A Krüss tensiometer and Wilhelmy plate were used to measure surface tension. Skim milk and whole milk were tested at a range of solids concentrations and were compared with the surface tension of standard and reconstituted milks. It was found that surface tension was affected more by temperature than by fat content or solids concentration. The surface tensions for concentrates correspond to published values for standard milks below 60°C, but above 60°C, the surface tension increases markedly, which can be attributed to changes in the milk chemistry. The difficulty associated with using the Wilhelmy plate method is the time taken to perform each measurement, which allows a skin to form and reduces the accuracy of the measurements.

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